Works (87)

Updated: May 9th, 2024 05:01

2024 article

Effect of Cucurbit Host, Production Region, and Season on the Population Structure of <i>Pseudoperonospora cubensis</i> in Florida

Shirley, A. M., Vallad, G. E., Quesada-Ocampo, L., Dufault, N., & Raid, R. (2024, February 19). PLANT DISEASE, Vol. 2.

By: A. Shirley*, G. Vallad*, L. Quesada-Ocampo n, N. Dufault* & R. Raid*

author keywords: Cucurbitaceae; downy mildew; microsatellite markers; oomycetes
TL;DR: This is the first study to characterize P. cubensis populations in Florida, evaluating the effect of cucurbit host and clade-type on isolate diversity and population structure, with implications for CDM management in Florida and other U.S. cucur Bit production areas. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: February 22, 2024

2024 journal article

Effector Repertoire of the Sweetpotato Black Rot Fungal Pathogen Ceratocystis fimbriata

Molecular Plant-Microbe Interactions®.

By: C. Parada-Rojas n, M. Stahr n, K. Childs* & L. Quesada-Ocampo n

Source: ORCID
Added: April 8, 2024

2024 article

Open Access and Reproducibility in Plant Pathology Research: Guidelines and Best Practices

Grunwald, N. J., Bock, C. H., Chang, J. H., De Souza, A. A., Del Ponte, E. M., Toit, L. J., … Zeng, Q. (2024, April 19). PHYTOPATHOLOGY, Vol. 4.

By: N. Grunwald*, C. Bock, J. Chang*, A. De Souza*, E. Del Ponte*, L. Toit*, A. Dorrance*, J. Dung* ...

author keywords: bioinformatics; computational biology; data science; epidemiology; genomics; microbiome; modeling; pathogen detection; population biology; techniques
Sources: Web Of Science, NC State University Libraries
Added: April 29, 2024

2024 journal article

Phytophthora nicotianae: A Quick Diagnostic Guide for Black Shank of Tobacco

Plant Health Progress.

By: S. Cochran n, L. Quesada-Ocampo n, J. Kerns n & L. Thiessen

Source: ORCID
Added: May 8, 2024

2023 review

<i>Phytophthora capsici</i>: Recent Progress on Fundamental Biology and Disease Management 100 Years After Its Description

[Review of ]. ANNUAL REVIEW OF PHYTOPATHOLOGY, 61, 185–208.

By: L. Quesada-Ocampo n, C. Parada-Rojas n, Z. Hansen*, G. Vogel*, C. Smart*, M. Hausbeck*, R. Carmo*, E. Huitema* ...

author keywords: oomycete; plant pathogen; vegetables; disease; fungicide resistance
TL;DR: Recent findings regarding the biology, genetic diversity, disease management, fungicide resistance, host resistance, genomics, and effector biology of P. capsici are discussed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 16, 2023

2023 review

Recent Advances and Challenges in Management of Colletotrichum orbiculare, the Causal Agent of Watermelon Anthracnose

[Review of ]. HORTICULTURAE, 9(10).

author keywords: anthracnose; Colletotrichum orbiculare; watermelon
TL;DR: The history of watermelon anthracnose, taxonomy, morphology, and diversity in races of C. orbiculare, the genetics behind the pathogenesis, and the current advances in breeding and molecular efforts to elucidate anthracNose resistance are discussed. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: December 4, 2023

2022 article

Carboxylic Acid Amide but Not Quinone Outside Inhibitor Fungicide Resistance Mutations Show Clade-Specific Occurrence in Pseudoperonospora cubensis Causing Downy Mildew in Commercial and Wild Cucurbits

D'Arcangelo, K. N., Wallace, E. C., Miles, T. D., & Quesada-Ocampo, L. M. (2022, August 2). PHYTOPATHOLOGY, Vol. 8.

author keywords: antimicrobial or fungicide resistance; disease control and pest management; oomycetes
MeSH headings : Fungicides, Industrial / pharmacology; Amides / pharmacology; Carboxylic Acids / pharmacology; Plant Diseases; Oomycetes / genetics; Peronospora; Mutation; Strobilurins / pharmacology; Quinones / pharmacology
TL;DR: This study used population analyses to determine the occurrence of fungicide resistance mutations to CAA and QoI fungicides in host-adapted clade 1 and clade 2 P. cubensis isolates, and revealed that CAA-resistant genotypes occurred more prominently in clades 2 and 3, with more sensitive genotypes observed in clade1. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 13, 2023

2022 journal article

Clade-Specific Monitoring of Airborne Pseudoperonospora spp. Sporangia Using Mitochondrial DNA Markers for Disease Management of Cucurbit Downy Mildew

PHYTOPATHOLOGY, 112(10), 2110–2125.

author keywords: Burkard; fungicide; hop downy mildew; impaction traps; Pseudoperonospora humuli; P. cubensis; Rotorod; spore traps
MeSH headings : Cucumis sativus; DNA, Mitochondrial; Disease Management; Fungicides, Industrial / pharmacology; Genetic Markers; Oomycetes / genetics; Peronospora / genetics; Plant Diseases / prevention & control; Sporangia
TL;DR: Improved methodology for the monitoring of airborne Pseudoperonospora spp. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: September 27, 2022

2022 article

Development, Validation, and Utility of Species-Specific Diagnostic Markers for Detection of Peronospora belbahrii

Standish, J. R., Gongora-Castillo, E., Bowman, M. J., Childs, K. L., Tian, M., & Quesada-Ocampo, L. M. (2022, July 1). PHYTOPATHOLOGY, Vol. 7.

author keywords: bioinformatics; disease control and pest management; genomics; oomycetes; pathogen detection
MeSH headings : Ocimum basilicum; Oomycetes / genetics; Peronospora / genetics; Plant Diseases; Plant Leaves
TL;DR: In this study, a draft genome assembly and next generation sequencing reads for P. belbahrii, and publicly available DNAseq and RNAseq reads of several other downy mildew pathogens, were incorporated into a bioinformatics pipeline to predict P.BelBahrii-specific diagnostic markers and develop a highly sensitive probe-based real-time qPCR assay. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: July 2, 2022

2022 journal article

Duration of Downy Mildew Control Achieved with Fungicides on Cucumber Under Florida Field Conditions

PLANT DISEASE, 106(4), 1167–1174.

By: A. Shirley*, G. Vallad*, N. Dufault*, R. Raid* & L. Quesada-Ocampo n

author keywords: cucumber; oomycetes; Pseudoperonospora cubensis; vegetables
MeSH headings : Cucumis sativus; Florida; Fungicides, Industrial / pharmacology; Oomycetes; Peronospora; Plant Diseases / prevention & control
TL;DR: Evaluating the field activity of eleven currently utilized fungicides was established by determining their duration of activity when applied at various intervals for the management of CDM in cucumber under Florida field conditions to potentially improve the development ofCDM management programs and slow resistance selection. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: March 30, 2022

2022 article

Managing Stubborn Oomycete Plant Pathogens Introduction

Kousik, C. S., Quesada-Ocampo, L. M., Keinath, A., Hausbeck, M., Granke, L., Naegele, R., & Ji, P. (2022, January 1). PLANT HEALTH PROGRESS, Vol. 22, pp. 215–217.

By: C. Kousik, L. Quesada-Ocampo, A. Keinath, M. Hausbeck, L. Granke, R. Naegele, P. Ji

UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 24, 2022

2022 article

Phytophthora capsici Populations Are Structured by Host, Geography, and Fluopicolide Sensitivity

Parada-Rojas, C. H., & Quesada-Ocampo, L. M. (2022, June 15). PHYTOPATHOLOGY, Vol. 6.

By: C. Parada-Rojas n & L. Quesada-Ocampo n

author keywords: chemical control; disease control and pest management; oomycetes; population biology
MeSH headings : Bayes Theorem; Benzamides; Fungicides, Industrial / pharmacology; Geography; Phytophthora / genetics; Plant Breeding; Plant Diseases
TL;DR: It is discovered that North Carolina populations stratify by fluopicolide sensitivity with insensitive isolates experiencing nonrandom mating, highlighting the need for careful monitoring of local field populations, improve selection of relevant isolates for breeding efforts, and hypervigilant surveillance of resistance to different fungicides. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: June 16, 2022

2022 article

Phytophthora capsici, 100 Years Later: Research Mile Markers from 1922 to 2022

Sanogo, S., Lamour, K., Kousik, C. S., Lozada, D. N., Parada-Rojas, C. H., Quesada-Ocampo, L. M., … Miller, S. A. (2022, November 19). PHYTOPATHOLOGY, Vol. 11.

By: S. Sanogo*, K. Lamour*, C. Kousik*, D. Lozada*, C. Parada-Rojas n, L. Quesada-Ocampo n, C. Wyenandt*, M. Babadoost* ...

author keywords: oospores; Phytophthora blight; Phytophthora capsici; sporangia; zoospores
MeSH headings : Phytophthora / genetics; Plant Diseases; Fungicides, Industrial; Capsicum
TL;DR: This review succinctly describes the salient mile markers of research on P. capsici with current perspectives on the pathogen's distribution, economic importance, epidemiology, genetics and genomics, fungicide resistance, host susceptibility, pathogenicity mechanisms, and management. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 14, 2023

2022 article

Plasma-driven biocatalysis: In situ hydrogen peroxide production with an atmospheric pressure plasma jet increases the performance of OleT(JE) when compared to adding the same molar amount of hydrogen peroxide in bolus

Wapshott-Stehli, H. L., Myers, B. G., Quesada, M. J. H., Grunden, A., & Stapelmann, K. (2022, February 3). PLASMA PROCESSES AND POLYMERS, Vol. 2.

author keywords: atmospheric pressure plasma jet; biocatalysis; cytochrome P450 enzymes; hydrogen peroxide; plasma liquid chemistry
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 4, 2022

2021 journal article

A Comprehensive Characterization of Ecological and Epidemiological Factors Driving Perennation of Podosphaera macularis Chasmothecia on Hop (Humulus lupulus)

PHYTOPATHOLOGY, 111(11), 1972–1982.

By: W. Weldon*, M. Marks*, A. Gevens*, . Kimberly N. D'Arcangelo, L. Quesada-Ocampo n, S. Parry*, D. Gent*, L. Cadle-Davidson*, D. Gadoury*

author keywords: chasmothecia; hop; overwintering; perennation; Podosphaera macularis; powdery mildew; primary infection
MeSH headings : Ascomycota / pathogenicity; Humulus / microbiology; Plant Diseases / microbiology
TL;DR: Observations suggest that existing early season disease management practices are especially crucial to controlling hop powdery mildew in the presence of P. macularis chasmothecia, and provide a baseline for the validation of weather driven models describing maturation and release of the organism's ascospores that can eventually be incorporated into hop disease management programs. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: November 8, 2021

2021 article

A Diagnostic Guide for Phytophthora capsici Infecting Vegetable Crops

PLANT HEALTH PROGRESS, Vol. 22, pp. 404–414.

By: C. Parada-Rojas n, L. Granke*, R. Naegele*, Z. Hansen*, M. Hausbeck*, C. Kousik*, M. McGrath*, C. Smart*, L. Quesada-Ocampo n

author keywords: Phytophthora blight; oomycete; diagnostics; molecular identification; pathogen isolation; pathogenicity testing
TL;DR: This diagnostic guide describes methods to identify P. capsici infection based on disease symptoms and pathogen signs and outlines methods for molecular identification, pathogen isolation, storage of single-sporangium cultures, and Pathogenicity testing. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 31, 2021

2021 journal article

A Multiplex TaqMan qPCR Assay for Detection and Quantification of Clade 1 and Clade 2 Isolates of Pseudoperonospora cubensis and Pseudoperonospora humuli

PLANT DISEASE, 105(10), 3154–3161.

By: S. Crandall*, M. Ramon*, A. Burkhardt*, J. Rodriguez*, N. Adair*, D. Gent*, M. Hausbeck*, L. Quesada-Ocampo n, F. Martin*

author keywords: pathogen detection and quantification; downy mildew; cucurbits; hop
MeSH headings : Epidemiological Models; Oomycetes / genetics; Peronospora; Plant Diseases; Sporangia
TL;DR: A highly specific multiplex TaqMan qPCR assay targeting unique sequences in the pathogens' mitochondrial genomes was developed that enables detection of all three taxa in a single multiplexed amplification. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: October 27, 2021

2021 journal article

Assessment of fungicide product applications and program approaches for control of downy mildew on pickling cucumber in North Carolina

CROP PROTECTION, 140.

By: . Kimberly N. D'Arcangelo, M. Adams n, J. Kerns n & L. Quesada-Ocampo n

author keywords: Pseudoperonospora; Oomycete; Fungicide resistance; IPM; Management; Downy mildew
TL;DR: Analysis revealed that several single-site treatments were effective in the suppression of disease, including treatments that included oxathiapiprolin, cyazofamid, propamocarb, ethaboxam, fluazinam, and a mixture of mancozeb/zoxamide, when compared to the non-treated controls. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: October 5, 2020

2021 journal article

Clade-Specific Biosurveillance of Pseudoperonospora cubensis Using Spore Traps for Precision Disease Management of Cucurbit Downy Mildew

PHYTOPATHOLOGY, 111(2), 312–320.

author keywords: disease control and pest management; epidemiology; oomycetes; pathogen detection
MeSH headings : Biosurveillance; Cucurbitaceae; Disease Management; North Carolina; Oomycetes / genetics; Plant Diseases; Spores
TL;DR: A multiplex qPCR assay was developed based on species- and clade-specific nuclear genomic markers that will significantly improve disease management of CDM by monitoring inoculum levels to determine the cucurbit crops at risk of infection throughout each growing season. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 17, 2021

2021 journal article

Comparative Transcriptome Analysis of Two Contrasting Maize Inbred Lines Provides Insights on Molecular Mechanisms of Stalk Rot Resistance

PhytoFrontiers™, 10.

TL;DR: A temporal transcriptome analysis of two maize inbred lines with contrasting responses to stalk rot using gene expression profiling revealed differential down-regulation of gene expression during the first two weeks in a resistant inbred line inoculated with F. graminearum. (via Semantic Scholar)
Source: ORCID
Added: October 21, 2021

2021 journal article

Effects of Water Temperature, Inoculum Concentration and Age, and Sanitizers on Infection of Ceratocystis fimbriata, Causal Agent of Black Rot in Sweetpotato

PLANT DISEASE, 105(5), 1365–1372.

author keywords: cultural and biological practices; disease development and spread; disease management; epidemiology; fungi; integrated pest management; maximum residue limit; MRL; vegetables
MeSH headings : Ceratocystis; Ipomoea batatas; Temperature; Water
TL;DR: If packing line dump tanks are improperly managed, they can aid C. fimbriata dispersal through the build-up of inoculum as infected roots are unknowingly washed after storage, and chlorine-based sanitizers can reduce infection when applied after root washing and not in the presence of high organic matter typically found in dump tanks. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: March 31, 2021

2021 review

Fantastic Downy Mildew Pathogens and How to Find Them: Advances in Detection and Diagnostics

[Review of ]. PLANTS-BASEL, 10(3).

author keywords: downy mildews; molecular diagnostics; plant pathogens
TL;DR: This review provides an overview of molecular detection technologies and a practical guide for selecting the best approaches for diagnosis and highlights the importance of incorporating information on pathogen variability in virulence and fungicide resistance for disease management. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: February 27, 2021

2021 article

First Report of Downy Mildew Caused by Peronospora chenopodii-ambrosioidis on Epazote (Dysphania ambrosioides) in North Carolina

PLANT HEALTH PROGRESS, Vol. 22, pp. 384–386.

By: S. Purayannur n, M. Munster n, M. Bertone n & L. Quesada-Ocampo n

author keywords: oomycete; downy mildew; Peronospora; epazote
TL;DR: The observation of downy mildew caused by Peronospora chenopodii-ambrosioidis on epazote (Dysphania ambrosioides) in North Carolina, U.S.A. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 23, 2021

2021 article

Managing Stubborn Oomycete Plant Pathogens

PLANT HEALTH PROGRESS, Vol. 22, pp. 215–217.

TL;DR: This first focus issue, titled Managing Stubborn Oomycete Plant Pathogens, Plant Health Progress has assembled an array of manuscripts on the biology and management of Phytophthora, Pythium, Pseudoperonospora, Peronosporiasis, and Aphanomyces spp. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: December 30, 2021

2021 journal article

Sweetpotato Root Development Influences Susceptibility to Black Rot Caused by the Fungal Pathogen <i>Ceratocystis fimbriata

Phytopathology®, 111(9), 1660–1669.

By: C. Parada-Rojas n, K. Pecota n, C. Almeyda n, G. Yencho n & L. Quesada-Ocampo n

author keywords: disease resistance; fungal pathogens; postharvest pathology and mycotoxins
MeSH headings : Ceratocystis; Cross-Sectional Studies; Ipomoea batatas; Plant Diseases
TL;DR: The high significant correlation between storage root cross-section area and cross-sectional lesion ratio suggests the presence of an unfavorable environment for C. fimbriata as the storage root develops. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries, Crossref
Added: October 5, 2021

2021 article

The hop downy mildew pathogen Pseudoperonospora humuli

Purayannur, S., Gent, D. H., Miles, T. D., Radisek, S., & Quesada-Ocampo, L. M. (2021, May 4). MOLECULAR PLANT PATHOLOGY, Vol. 5.

author keywords: effectors; host resistance; obligate biotroph; oomycete management; oomycetes
MeSH headings : Disease Resistance; Fungicides, Industrial; Humulus / immunology; Humulus / parasitology; Oomycetes / physiology; Plant Diseases / immunology; Plant Diseases / parasitology; Plant Diseases / prevention & control
TL;DR: This review summarizes the current knowledge on the symptoms of the disease, life cycle, virulence factors, and management of hop downy mildew, including various forecasting systems available in the world. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: May 5, 2021

2020 journal article

A Diagnostic Guide for Basil Downy Mildew

Plant Health Progress, 21(2), 77–81.

author keywords: Peronospora belbahrii; oomycete; Ocimum basilicum; biotroph; downy mildew
TL;DR: The goal of this diagnostic guide is to outline the appropriate methods required to identify basil downy mildew based on the symptoms of the disease and signs of the pathogen. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2020 journal article

Assessing the Role of Temperature, Inoculum Density, and Wounding on Disease Progression of the Fungal Pathogen Ceratocystis fimbriata Causing Black Rot in Sweetpotato

PLANT DISEASE, 104(3), 930–937.

author keywords: causal agent; crop type; cultural and biological practices; disease development and spread; disease management; epidemiology; fungi; vegetables
MeSH headings : Ascomycota; Disease Progression; Humans; Ipomoea batatas; Temperature
TL;DR: This study found 29 and 23°C to be the optimal temperature for black rot disease development and sporulation, respectively and suggested tighter regulation of curing and storage conditions and better postharvest handling of sweetpotato roots to avoid unnecessary wounding. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: April 6, 2020

2020 journal article

Diagnostic Guide for Cucurbit Downy Mildew

Plant Health Progress, 21(3), 166–172.

TL;DR: The objective of this diagnostic guide is to describe the current taxonomy, host, geographic range, symptoms, and signs as well as effective techniques for pathogen identification, evaluation, isolation, and storage for P. cubensis. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2020 journal article

First Report of Bacterial Root Rot, Caused by Dickeya dadantii, on Sweetpotato (Ipomoea batatas) in North Carolina

Plant Disease, 104(10), 2723–2723.

By: M. Stahr n, S. Butler n, A. Huerta n, D. Ritchie n & L. Quesada-Ocampo n

author keywords: prokaryotes; vegetables; epidemiology; disease development and spread
Source: ORCID
Added: September 8, 2020

2020 journal article

First Report of Downy Mildew, Caused by Peronospora effusa, on Spinach (Spinacia oleracea) in North Carolina

Plant Health Progress, 21(3), 194–196.

By: J. Standish n, S. Sharpe n, S. Butler n, L. Quesada-Ocampo n & I. Meadows n

author keywords: oomycete; downy mildew; Peronospora effusa; spinach
TL;DR: The morphology of sporangiophores and sporangia was characterized, and the internal transcribed spacer region and cytochrome oxidase I sequences were compared to confirm pathogen identity. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2020 journal article

First Report of Fusarium Wilt of Blackberry Caused by Fusarium oxysporum f. sp. mori in North Carolina

Plant Disease, 104(3), 971.

By: A. Pastrana*, W. Cline n, T. Wong n, D. Watson*, J. Mercier*, K. Ivors*, J. Broome*, L. Quesada-Ocampo n, T. Gordon*

author keywords: Fusarium oxysporum; blackberry; North Carolina; first report
Source: ORCID
Added: September 8, 2020

2020 journal article

Hop Downy Mildew Caused by Pseudoperonospora humuli: A Diagnostic Guide

Plant Health Progress, 21(3), 173–179.

author keywords: Pseudoperonospora humuli; oomycete; hop downy mildew
TL;DR: An overview of the pathogen, the host range and geographical distribution, and the means to diagnose the disease is presented and the procedures for laboratory propagation and maintenance of isolates are presented. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2020 journal article

Population Analyses Reveal Two Host-Adapted Clades of Pseudoperonospora cubensis, the Causal Agent of Cucurbit Downy Mildew, on Commercial and Wild Cucurbits

Phytopathology®, 110(9), 1578–1587.

By: E. Wallace n, K. D’Arcangelo n & L. Quesada-Ocampo n

author keywords: mycology; population biology
MeSH headings : Cucurbitaceae; North Carolina; Oomycetes; Peronospora; Plant Diseases
TL;DR: Findings have implications for disease management because clade-specific factors such as host susceptibility and inoculum availability of each clade by region may influence P. cubensis outbreaks in different commercial cucurbits, timing of fungicide applications, and phenotyping for breeding efforts. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2020 journal article

Sensitivity of Fusarium oxysporum f. sp. niveum to Prothioconazole and Pydiflumetofen In Vitro and Efficacy for Fusarium Wilt Management in Watermelon

PLANT HEALTH PROGRESS, 21(1), 13–18.

By: N. Miller n, J. Standish n & L. Quesada-Ocampo n

author keywords: Fusarium wilt; fungicide sensitivity; triazole; SDHI; watermelon
TL;DR: Pydiflumetofen is validated as an effective management option for Fusarium wilt of watermelon, confirm previously observed efficacy of prothioconazole, and provide current evidence of pathogen sensitivity to these fungicides in North Carolina. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: March 30, 2020

2020 article

The CucCAP project: leveraging applied genomics to improve disease resistance in cucurbit crops

VI INTERNATIONAL SYMPOSIUM ON CUCURBITS, Vol. 1294, pp. 91–104.

By: R. Grumet, Z. Fei, A. Levi, M. Mazourek, J. McCreight, J. Schultheis*, Y. Weng, M. Hausbeck ...

author keywords: cucumber; Citrullus; Cucumis; Cucurbita; melon; squash; pumpkin; watermelon; core collections
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science; OpenAlex)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: November 1, 2021

2020 journal article

The Effector Repertoire of the Hop Downy Mildew Pathogen Pseudoperonospora humuli

FRONTIERS IN GENETICS, 11.

author keywords: downy mildew; Pseudoperonospora; secretome; effectors; RXLR
TL;DR: A set of P. humuli core effectors are identified that showed transcript evidence in all tested isolates and elevated expression during infection and are ideal candidates for functional analysis and effector-assisted breeding to develop DM resistant hop cultivars. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: September 21, 2020

2020 journal article

Vine Removal Prior to Harvest, and Curing Duration and Temperature Affect the Incidence and Severity of Internal Necrosis in 'Covington' Sweetpotato

HORTTECHNOLOGY, 30(5), 544–551.

author keywords: Ipomoea batatas; mowing; preharvest; postharvest; potassium fertilizer; storage; vine snatching
TL;DR: Preharvest potash fertilizer treatments had minimal or no effect on occurrence of internal necrosis, however, mowing vines before harvest in several studies reduced IN incidence when roots were cured for more than 0.5 week at temperatures of at least 75 °F. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: November 2, 2020

2019 journal article

Black Rot of Sweetpotato: A Comprehensive Diagnostic Guide

PLANT HEALTH PROGRESS, 20(4), 255–260.

author keywords: mycology; Ipomoea batatas; Ceratocystis fimbriata; pathogenicity testing
TL;DR: The objective for this diagnostic guide is to provide information about effective techniques for pathogen isolation, identification, storage, and pathogenicity testing as well as describe the host and geographic range, taxonomy, and disease in sweetpotato. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: March 30, 2020

2019 journal article

Characterizing Sources of Resistance to Phytophthora Blight of Pepper Caused by Phytophthora capsici in North Carolina

PLANT HEALTH PROGRESS, 20(2), 112–119.

By: C. Parada-Rojas n & L. Quesada-Ocampo n

author keywords: pepper; host resistance; Phytophthora; field and greenhouse vegetables
TL;DR: Overall, highly resistant cultivars tended to respond similarly to field mix inoculations and greenhouse single isolate inoculations as well as the cultivars Martha-R, Meeting, and Intruder. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: March 30, 2020

2019 journal article

Genome Sequencing and Transcriptome Analysis of the Hop Downy Mildew Pathogen Pseudoperonospora humuli Reveal Species-Specific Genes for Molecular Detection

PHYTOPATHOLOGY, 109(8), 1354–1366.

MeSH headings : Gene Expression Profiling; Humulus; Oomycetes / genetics; Oomycetes / pathogenicity; Peronospora; Plant Diseases / microbiology
TL;DR: Candidate markers identified through comparative genomics can be used for pathogen diagnostics in propagation material, such as rhizomes and vegetative cuttings, or adapted for biosurveillance of airborne sporangia, an important source of inoculum in hop downy mildew epidemics. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: April 20, 2020

2019 journal article

Population Structure of Pythium ultimum from Greenhouse Floral Crops in Michigan

PLANT DISEASE, 103(5), 859–867.

By: J. Munera*, L. Quesada-Ocampo n, A. Rojas*, M. Chilvers* & M. Hausbeck*

MeSH headings : Genotype; Michigan; Plant Diseases / microbiology; Plants / microbiology; Population Dynamics; Pythium / classification; Pythium / genetics; Seedlings
TL;DR: A clonal population is revealed, with limited differentiation among seasons, hosts, and counties sampled, and the presence of common genotypes among counties suggests that there is an exchange of infected plant material among greenhouse facilities, or thatthere is a common source of inoculum coming to the region. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: May 13, 2019

2018 journal article

Advances in Diagnostics of Downy Mildews: Lessons Learned from Other Oomycetes and Future Challenges

PLANT DISEASE, 102(2), 265–275.

MeSH headings : Oomycetes / classification; Oomycetes / genetics; Peronospora / classification; Peronospora / genetics; Plant Diseases / etiology; Plant Diseases / microbiology
TL;DR: Recent advances in diagnostic tools that can be used to detect downy mildew remain understudied and advances in molecular detection techniques hold promise for rapid and in some cases, relatively inexpensive diagnosis. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2018 journal article

Analysis of microsatellites from transcriptome sequences of Phytophthora capsici and applications for population studies

SCIENTIFIC REPORTS, 8(1).

By: C. Parada-Rojas n & L. Quesada-Ocampo n

MeSH headings : Disease Resistance / genetics; Genetics, Population; Genome, Plant / genetics; Microsatellite Repeats / genetics; Oomycetes / genetics; Oomycetes / pathogenicity; Phytophthora / genetics; Phytophthora / pathogenicity; Plant Diseases / genetics; Plant Diseases / microbiology; Polymorphism, Genetic; Transcriptome / genetics
TL;DR: The authors' findings highlight the usefulness of these 12 microsatellites to characterize the population structure of P. capsici and potential transferability to closely-related Phytophthora spp. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

Analysis of microsatellites from the transcriptome of downy mildew pathogens and their application for characterization of Pseud operonospora populations

PEERJ, 5.

author keywords: Pseudoperonospora cubensis; Downy mildew; Simple Sequence Repeats; Microsatellites; Comparative genomics; Population genetics
TL;DR: Analysis of Pseudoperonospora isolates from diverse hosts and locations revealed higher diversity in P. cubensis compared to P. humuli isolates, and compared the microsatellite repertoire of P.Cubensis to that of the model organism Hyaloper onospora arabidopsidis, which causes downy mildew in Arabidopsis. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Examining the population structure of the cucurbit downy mildew pathogen, Pseudoperonospora cubensis, by host, location and time

Phytopathology, 107(7), 6–6.

By: E. Wallace & L. Quesada-Ocampo

Source: NC State University Libraries
Added: August 6, 2018

2017 journal article

Genetic Diversity, Fungicide Sensitivity, and Host Resistance to Ceratocystis fimbriata Infecting Sweetpotato in North Carolina

PLANT DISEASE, 101(6), 994–1001.

By: A. Scruggs n, T. Basaiah, M. Adams n & L. Quesada-Ocampo n

TL;DR: Low efficacy of dicloran, as well as a range of EC50 values among isolates, suggests potential resistance to this commonly applied fungicide. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Molecular approaches for biosurveillance of the cucurbit downy mildew pathogen, Pseudoperonospora cubensis

CANADIAN JOURNAL OF PLANT PATHOLOGY, 39(3), 282–296.

author keywords: biosurveillance; diagnostics; downy mildew; genomics; next generation sequencing; oomycetes
TL;DR: Approaches to identify unique loci for rapid molecular diagnostics using genomic data, to develop molecular diagnostic tools that discriminate economically important pathogen alleles, and how to use moleculardiagnostics with current and future spore trap strategies for biosurveillance purposes of important downy mildew pathogens are discussed. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

Resurgence of cucurbit downy mildew in the United States: Insights from comparative genomic analysis of Pseudoperonospora cubensis

Ecology and Evolution, 7(16), 6231–6246.

author keywords: coalescent analysis; cucurbits; disease resurgence; downy mildew; lineage; phylogenetic analysis
TL;DR: P. cubensis is associated with the resurgence of CDM on cucumber in the United States and its presence in two distinct evolutionary lineages (lineages I and II) is confirmed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: August 6, 2018

2017 journal article

Using genomics approaches for rapid development of species-specific diagnostics for cucurbit downy mildew

Canadian Journal of Plant Pathology, 39(1), 106–106.

By: L. Quesada-Ocampo

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Cultural, Chemical, and Alternative Control Strategies for Rhizopus Soft Rot of Sweetpotato

PLANT DISEASE, 100(8), 1532–1540.

TL;DR: Understanding the epidemiological factors favoring Rhizopus soft rot and identifying alternative control strategies allow for improved recommendations to limit postharvest losses in sweetpotato. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Etiology and Epidemiological Conditions Promoting Fusarium Root Rot in Sweetpotato

PHYTOPATHOLOGY, 106(8), 909–919.

MeSH headings : Environment; Extinction, Biological; Fusarium; Ipomoea batatas / microbiology; North Carolina; Phylogeny; Plant Diseases / microbiology; Plant Roots / microbiology
TL;DR: This study characterizes the etiology and epidemiology of Fusarium root rot in sweetpotato, which allows for improved disease management recommendations to limit postharvest losses to this disease. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 article

First Report of Plasmopara aff. australis on Luffa cylindrica in the United States.

Wallace, E., Choi, Y. J., Thines, M., & Quesada-Ocampo, L. M. (2016, February). PLANT DISEASE, Vol. 100, pp. 537–537.

Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 article

Powdery Mildew Caused by Podosphaera macularis on Hop (Humulus lupulus) in North Carolina

Wolfenbarger, S. N., Quesada-Ocampo, L. M., & Gent, D. H. (2016, June). PLANT DISEASE, Vol. 100, pp. 1245–1246.

By: S. Wolfenbarger*, L. Quesada-Ocampo n & D. Gent*

TL;DR: Hop (Humulus lupulus L.) production recently has expanded across the United States to include areas of the country that have not previously grown hop commercially, and occurrence of the disease on Cascade was of particular concern because Cascade is thought to possess some resistance to powdery mildew, although Cascade-adapted strains of P. macularis have been detected in the U.S. Pacific Northwest. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Regional and Temporal Population Structure of Pseudoperonospora cubensis in Michigan and Ontario

PHYTOPATHOLOGY, 106(4), 372–379.

By: R. Naegele n, L. Quesada-Ocampo n, J. Kurjan n, C. Saude n & M. Hausbeck n

MeSH headings : Cluster Analysis; Cucurbitaceae / microbiology; Genetic Markers; Genetic Variation; Genetics, Population; Geography; Michigan; Microsatellite Repeats / genetics; Ontario; Oomycetes / genetics; Oomycetes / isolation & purification; Plant Diseases / microbiology; Sporangia
TL;DR: The Michigan and Canada populations were significantly differentiated, and a unique genetic cluster was detected in Michigan, which is believed to be the first of its kind in the world. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Resistance to Crown and Root Rot Caused by Phytophthora capsici in a Tomato Advanced Backcross of Solanum habrochaites and Solanum lycopersicum

PLANT DISEASE, 100(4), 829–835.

By: L. Quesada-Ocampo n, A. Vargas*, R. Naegele*, D. Francis* & M. Hausbeck*

TL;DR: Resistant lines and polymorphic markers identified in this study are a valuable resource for development of tomato varieties resistant to P. capsici. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Susceptibility of Maize to Stalk Rot Caused by Fusarium graminearum Deoxynivalenol and Zearalenone Mutants

PHYTOPATHOLOGY, 106(8), 920–927.

MeSH headings : DNA, Plant / genetics; Fusarium / genetics; Fusarium / metabolism; Gene Expression Regulation, Fungal / physiology; Genetic Predisposition to Disease; Mutation; Plant Diseases / microbiology; Trichothecenes / genetics; Trichothecenes / metabolism; Zea mays / genetics; Zea mays / microbiology; Zearalenone / genetics; Zearalenone / metabolism
TL;DR: Findings are an additional step toward breeding maize inbreds suitable for planting in fields infested with F. graminearum, and establish whether deoxynivalenol (DON)- and zearalenone (ZEA)-deficient strains are pathogenic on a panel of diverse inbredS. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Using Next-Generation Sequencing to Develop Molecular Diagnostics for Pseudoperonospora cubensis, the Cucurbit Downy Mildew Pathogen

PHYTOPATHOLOGY, 106(10), 1105–1116.

MeSH headings : Cucurbitaceae / parasitology; Genetic Markers / genetics; Genomics; High-Throughput Nucleotide Sequencing / methods; Host Specificity; Oomycetes / genetics; Oomycetes / isolation & purification; Plant Diseases / parasitology; Plant Leaves / parasitology; Real-Time Polymerase Chain Reaction; Sequence Analysis, DNA; Species Specificity
TL;DR: Seven diagnostic markers were found to be specific to P. cubensis that could be used for pathogen diagnostics on infected tissue, or adapted for monitoring airborne inoculum with real-time PCR and spore traps. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Characterization, Virulence, Epidemiology, and Management of Anthracnose in Celery

PLANT DISEASE, 99(12), 1832–1840.

By: L. Rodriguez-Salamanca*, L. Quesada-Ocampo n, R. Naegele* & M. Hausbeck*

TL;DR: The pathogen Colletotrichum acutatum species complex had not been previously associated with celery in Michigan before this study, and the pathogen's genotype and phenotype were characterized, the influence of environmental conditions determined, and fungicides tested. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Epidemiology and Population Biology of Pseudoperonospora cubensis : A Model System for Management of Downy Mildews

Annu. Rev. Phytopathol., 53(1), 223–246.

By: P. Ojiambo n, D. Gent*, L. Quesada-Ocampo n, M. Hausbeck* & G. Holmes*

author keywords: Bayesian prediction; disease management; genomics; mating type; pathotype; risk assessment
MeSH headings : Crop Production; Cucurbitaceae / microbiology; Oomycetes / physiology; Plant Diseases / microbiology
TL;DR: Uncertainty remains regarding the role of locally produced inoculum in disease outbreaks, but evidence suggests multiple sources of primary inoculum could be important and concepts and approaches developed in this pathosystem can guide future efforts when responding to incursions of new or reemerging downy mildew pathogens. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: ORCID
Added: December 19, 2019

2015 review

Epidemiology and population biology of Pseudoperonospora cubensis: A model system for management of downy mildews

[Review of ]. Annual review of phytopathology, vol 53, 53, 223–246.

By: P. Ojiambo, D. Gent, L. Quesada-Ocampo, M. Hausbeck & G. Holmes

Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

First Report of Downy Mildew on Buffalo Gourd (Cucurbita foetidissima) Caused by Pseudoperonospora cubensis in North Carolina

Plant Disease, 99(12), 1861–1861.

By: E. Wallace n, M. Adams n & L. Quesada-Ocampo n

Source: ORCID
Added: September 8, 2020

2015 journal article

First Report of Phytophthora Fruit Rot on Bitter Gourd (Mormodica charantia) and Sponge Gourd (Luffa cylindrica) Caused by Phytophthora capsici

PHP.

TL;DR: The pathogen was identified as Phytophthora capsici on the basis of sporangia morphology and amplification of the ITS region using specific PCR primers and confirmation of the pathogen as P. capsici was done by PCR amplification and sequencing of 12 specific regions. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2015 article

First Report of Plectosporium Blight on Pumpkin and Squash Caused by Plectosporium tabacinum in North Carolina

Quesada-Ocampo, L. M., Withers, S., Butler, S., Birdsell, T., & Schultheis, J. (2015, May). PLANT DISEASE, Vol. 99, pp. 724–725.

UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Resurgence of Cucurbit Downy Mildew in the United States: A Watershed Event for Research and Extension

PLANT DISEASE, 99(4), 428–441.

By: G. Holmes*, P. Ojiambo n, M. Hausbeck*, L. Quesada-Ocampo n & A. Keinath*

TL;DR: In 2004, an outbreak of cucurbit downy mildew caused by the oomycete Pseudoperonospora cubensis resulted in an epidemic that stunned the cucumber industry in the eastern United States, raising several fundamental questions about the potential causes for the resurgence of the disease. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Resurgence of Cucurbit Downy Mildew in the United States: A Watershed Event for Research and Extension

Plant Disease, 4015(1), 1–14.

By: G. Holmes, P. Ojiambo, M. Hausbeck, L. Quesada-Ocampo & A. Keinath

Source: ORCID
Added: September 8, 2020

2015 journal article

Resurgence of Pseudoperonospora cubensis: The Causal Agent of Cucurbit Downy Mildew

PHYTOPATHOLOGY, 105(7), 998–1012.

By: Y. Cohen n, K. Langenberg n, T. Wehner n, P. Ojiambo n, M. Hausbeck n, L. Quesada-Ocampo n, A. Lebeda n, H. Sierotzki n, U. Gisi n

author keywords: disease outbreak; population changes
MeSH headings : Cucurbitaceae / genetics; Cucurbitaceae / microbiology; Drug Resistance, Microbial; Europe; Fungicides, Industrial; Host-Pathogen Interactions / genetics; Oomycetes / physiology; Pest Control; Plant Diseases; Plant Immunity / genetics; United States
TL;DR: The downy mildew pathogen, Pseudoperonospora cubensis, which infects plant species in the family Cucurbitaceae, has undergone major changes during the last decade and offers challenges to scientists in many research areas including pathogen biology, epidemiology and dispersal, population structure and population genetics, host preference, host-pathogen interactions and gene expression, genetic host plant resistance, inheritance of host and fungicide resistance, and chemical disease control. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2014 article

First Report of Cladosporium Leaf Spot of Spinach Caused by Cladosporium variabile in North Carolina

Scruggs, A. C., Butler, S. C., & Quesada-Ocampo, L. M. (2014, December). PLANT DISEASE, Vol. 98.

TL;DR: To the authors' knowledge, this is the first report of Cladosporium leaf spot on spinach in North Carolina based on morphological evaluation and H3 sequencing results. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2014 article

First Report of Fusarium Rot of Garlic Bulbs Caused by Fusarium proliferatum in North Carolina

Quesada-Ocampo, L. M., Butler, S., Withers, S., & Ivors, K. (2014, July). PLANT DISEASE, Vol. 98, pp. 1009–1010.

By: L. Quesada-Ocampo n, S. Butler n, S. Withers n & K. Ivors n

TL;DR: In August of 2013, garlic bulbs grown and stored under dry conditions by a commercial producer in Buncombe County showed water-soaked, tan to salmon-pink lesions, which is the first report in North Carolina of F. proliferatum causing bulb rot of garlic in the United States. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: ORCID, Web Of Science
Added: August 6, 2018

2014 article

First Report of Pseudoperonospora cubensis Causing Downy Mildew on Momordica balsamina and M. charantia in North Carolina

Wallace, E., Adams, M., Ivors, K., Ojiambo, P. S., & Quesada-Ocampo, L. M. (2014, September). PLANT DISEASE, Vol. 98, pp. 1279–1279.

TL;DR: To the authors' knowledge, this is the first report of P. cubensis infecting these Momordica spp. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2014 journal article

Genetic Diversity, Population Structure, and Resistance to Phytophthora capsici of a Worldwide Collection of Eggplant Germplasm

PLOS ONE, 9(5).

By: R. Naegele*, S. Boyle*, L. Quesada-Ocampo n & M. Hausbeck*

Ed(s): B. Vinatzer

MeSH headings : Disease Resistance / genetics; Genetic Variation; Microsatellite Repeats / genetics; Phytophthora / pathogenicity; Plant Diseases / microbiology; Solanum melongena / genetics; Solanum melongena / microbiology
TL;DR: Partial resistance to Phytophthora fruit rot was found in accessions from all four eggplant species evaluated in this study and indicated the existence of four genetic clusters within the eggplant collection. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

Improvement of the Oryza sativa Nipponbare reference genome using next generation sequence and optical map data

Rice, 6(1), 4.

By: Y. Kawahara*, M. Bastide*, J. Hamilton*, H. Kanamori*, W. McCombie*, S. Ouyang*, D. Schwartz*, T. Tanaka* ...

author keywords: Oryza sativa; Nipponbare; Unified rice reference genome; Pseudomolecules; Minimum tiling path; Optical mapping; Genome re-sequencing; Next-generation sequencing
TL;DR: A revised, error-corrected, and validated assembly of the Nipponbare cultivar of rice was generated using optical map data, re-sequencing data, and manual curation that will facilitate on-going and future research in rice. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2012 journal article

Advances in Research on Phytophthora capsici on Vegetable Crops in The United States

Plant Disease, 96(11), 1588–1600.

By: L. Granke*, L. Quesada-Ocampo*, K. Lamour* & M. Hausbeck*

TL;DR: Phytophthora capsici causes foliar blighting, damping-off, wilting, and root, stem, and fruit rot of susceptible hosts, and economic losses are experienced annually in vegetable crops including cucurbits and peppers. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2012 journal article

Differences in virulence of Phytophthora capsici isolates from a worldwide collection on host fruits

European Journal of Plant Pathology, 132(2), 281–296.

By: L. Granke*, L. Quesada-Ocampo* & M. Hausbeck*

author keywords: Genetic structure; Pathogenicity; Phytophthora tropicalis; Population genetics; Population structure; Virulence structure
TL;DR: These findings suggest that isolate characteristics such as host family of origin and genetic cluster membership may be used to guide initial isolate selection for cucurbit fruit resistance screening, including isolates with differing virulence to the host organ of interest. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: Crossref, NC State University Libraries, ORCID
Added: September 8, 2020

2012 journal article

Genetic Structure of Clavibacter michiganensis subsp. michiganensis Populations in Michigan Commercial Tomato Fields

Plant Disease, 96(6), 788–796.

By: L. Quesada-Ocampo*, N. Landers, A. Lebeis*, D. Fulbright* & M. Hausbeck*

TL;DR: The frequency of PCR types detected with BOX-PCR in all strains and Bayesian cluster analysis, pairwise differentiation index comparisons, and genetic diversity estimates of 96 strains genotyped for six virulence-related genes revealed that C. michiganensis populations in Michigan tomato fields are geographically structured. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2012 journal article

The Genetic Structure of Pseudoperonospora cubensis Populations

Plant Disease, 96(10), 1459–1470.

By: L. Quesada-Ocampo*, L. Granke*, J. Olsen*, H. Gutting*, F. Runge*, M. Thines*, A. Lebeda*, M. Hausbeck*

TL;DR: Although this study provides an initial map of global population structure of P. cubensis, future genotyping of isolates could reveal population structure within specific geographic regions, across a wider range of hosts, or during different time points during the growing season. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2011 journal article

Investigating the Genetic Structure of Phytophthora capsici Populations

Phytopathology, 101(9), 1061–1073.

By: L. Quesada-Ocampo*, L. Granke, M. Mercier, J. Olsen & M. Hausbeck

MeSH headings : Alanine / analogs & derivatives; Alanine / pharmacology; Base Sequence; Bayes Theorem; Cell Nucleus / genetics; Cluster Analysis; DNA, Mitochondrial / chemistry; DNA, Mitochondrial / genetics; Genetic Markers; Genetic Structures / genetics; Genetic Variation; Genotype; Haplotypes; Host Specificity; Mating Factor; Molecular Sequence Data; Peptides; Phylogeography; Phytophthora / classification; Phytophthora / drug effects; Phytophthora / genetics; Plant Diseases / microbiology; Polymorphism, Genetic; Recombination, Genetic / genetics; Sequence Analysis, DNA; Species Specificity
TL;DR: An initial map of global population structure of P. capsici is provided but continued genotyping of isolates will be necessary to expand the knowledge of genetic variation in this important plant pathogen. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2011 journal article

Temporal Genetic Structure of Phytophthora capsici Populations from a Creek Used for Irrigation in Michigan

Plant Disease, 95(11), 1358–1369.

By: L. Quesada-Ocampo, L. Granke & M. Hausbeck*

TL;DR: Since irrigation water can remain infested or become reinfested annually with P. capsici for years after the adjacent fields are transitioned to nonsusceptible crops, growers are advised to avoid potentially infested irrigation water even after rotating to nonhost crops for several years. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2011 journal article

Variation in Phenotypic Characteristics of Phytophthora capsici Isolates from a Worldwide Collection

Plant Disease, 95(9), 1080–1088.

By: L. Granke*, L. Quesada-Ocampo* & M. Hausbeck*

TL;DR: Substantial variation in morphological and physiological characteristics among P. capsici isolates is indicated, and isolates from nonvegetable hosts produced fewer sporangia than isolate from vegetable hosts. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2010 journal article

Resistance in Tomato and Wild Relatives to Crown and Root Rot Caused by Phytophthora capsici

Phytopathology, 100(6), 619–627.

By: L. Quesada-Ocampo & M. Hausbeck

MeSH headings : Host-Pathogen Interactions; Solanum lycopersicum / genetics; Solanum lycopersicum / immunology; Solanum lycopersicum / microbiology; Phytophthora / physiology; Plant Diseases / immunology; Plant Diseases / microbiology; Solanum / genetics; Solanum / immunology; Solanum / microbiology
TL;DR: Amplified fragment length polymorphisms of tomato genotypes showed a lack of correlation between genetic clusters and susceptibility to P. capsici, indicating that resistance is distributed in several tomato lineages. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: ORCID
Added: September 8, 2020

2010 journal article

The cucurbit downy mildew pathogen Pseudoperonospora cubensis

Molecular Plant Pathology, 12(3), 217–226.

By: E. Savory*, L. Granke*, L. Quesada Ocampo*, M. Varbanova*, M. Hausbeck* & D. Brad*

MeSH headings : Cucurbitaceae / microbiology; Microbial Viability; Peronospora / classification; Peronospora / cytology; Peronospora / pathogenicity; Peronospora / physiology; Plant Diseases / microbiology; Virulence
TL;DR: This review summarizes the current knowledge of taxonomy, disease development, virulence, pathogenicity and control of Ps. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2009 journal article

Characterization of Phytophthora infestans Populations in Colombia: First Report of the A2 Mating Type

Phytopathology, 99(1), 82–88.

By: A. Vargas, L. Ocampo, M. Céspedes, N. Carreño, A. González, A. Rojas, A. Zuluaga, K. Myers ...

MeSH headings : Colombia; DNA, Fungal / genetics; DNA, Mitochondrial / genetics; DNA, Ribosomal Spacer / genetics; Fungal Proteins / genetics; Fungal Proteins / metabolism; Gene Expression Regulation, Fungal; Genes, Mating Type, Fungal / genetics; Host-Pathogen Interactions; Isoenzymes; Microsatellite Repeats; Phytophthora infestans / genetics; Plant Diseases / microbiology; Solanaceae / microbiology
TL;DR: The phenotypic and molecular characterization of 97 isolates collected from six different solanaceous plants in Colombia revealed a single individual of A2 mating type (from Physalis peruviana) for the first time in Colombia, which has important epidemiological implications for the production of these two crops in Colombia. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: ORCID
Added: September 8, 2020

2009 journal article

Distinct Amino Acids of the Phytophthora infestans Effector AVR3a Condition Activation of R3a Hypersensitivity and Suppression of Cell Death

MPMI, 22(3), 269–281.

By: J. Bos*, A. Chaparro-Garcia*, L. Quesada-Ocampo*, B. Gardener* & S. Kamoun*

MeSH headings : Algal Proteins / genetics; Algal Proteins / metabolism; Amino Acid Sequence; Cell Death; Gene Expression Regulation / physiology; Molecular Sequence Data; Mutation; Phytophthora infestans / metabolism; Plant Diseases; Plant Proteins / genetics; Plant Proteins / metabolism; Tobacco / microbiology
TL;DR: The identification of mutants that gain R3a activation but not cell-death suppression activity suggests that distinct amino acids condition the two AVR3a effector activities. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: ORCID
Added: September 8, 2020

2009 journal article

Susceptibility of Fraser Fir to Phytophthora capsici

Plant Disease, 93(2), 135–141.

By: L. Quesada-Ocampo, D. Fulbright* & M. Hausbeck*

author keywords: Christmas tree diseases; etiology; soilborne diseases
TL;DR: This study suggests that planting Fraser fir in fields infested with P. capsici could result in infection and that adjustments in current rotational schemes are needed. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

2008 journal article

Evidence for Positive Selection in Putative Virulence Factors within the Paracoccidioides brasiliensis Species Complex

PLoS Negl Trop Dis, 2(9), e296.

Ed(s): J. Taylor

MeSH headings : DNA Mutational Analysis; DNA, Fungal / genetics; DNA, Fungal / isolation & purification; Genes, Fungal; Genetic Variation; Genome, Fungal; Humans; Latin America / epidemiology; Likelihood Functions; Models, Genetic; Paracoccidioides / classification; Paracoccidioides / genetics; Paracoccidioides / pathogenicity; Paracoccidioidomycosis / epidemiology; Paracoccidioidomycosis / prevention & control; Phylogeny; Selection, Genetic; Virulence / genetics
Source: ORCID
Added: September 8, 2020

2007 journal article

Mapping EST-derived SSRs and ESTs involved in resistance to bacterial blight in Manihot esculenta

Genome, 50(12), 1078–1088.

By: D. Somers, C. López*, L. Quesada-Ocampo*, A. Bohórquez*, M. Duque*, J. Vargas*, J. Tohme*, V. Verdier*

author keywords: cassava; EST; SSR; QTL mapping; cassava bacterial blight resistance
MeSH headings : Alleles; Base Sequence; Biomarkers; Chromosome Mapping; Expressed Sequence Tags; Genes, Plant; Genotype; Manihot / genetics; Manihot / microbiology; Minisatellite Repeats; Plant Diseases / genetics; Plant Diseases / immunology; Polymorphism, Restriction Fragment Length; Polymorphism, Single Nucleotide / genetics; Quantitative Trait Loci; Quantitative Trait, Heritable; Xanthomonas
TL;DR: Mapping expressed sequence tags and determining their co-localization with quantitative trait loci (QTLs) may give additional evidence of the role of the corresponding genes in resistance or defense in Cassava. (via Semantic Scholar)
Source: ORCID
Added: September 8, 2020

article

Phytophthora capsici in the eastern USA.

Granke, L., Quesada-Ocampo, L., & Hausbeck, M. Phytophthora: a Global Perspective, pp. 96–103.

By: L. Granke, L. Quesada-Ocampo & M. Hausbeck

Source: ORCID
Added: September 8, 2020

Employment

Updated: January 13th, 2020 14:48

2013 - present

North Carolina State University Raleigh, NC, US
Professor Entomology and Plant Pathology

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