Howard D. Shew

Works (68)

Updated: October 1st, 2024 05:04

2024 article

The Origin of the Problem: Characterization of Paraguayan <i>Septoria steviae</i>, Causal Agent of Septoria Leaf Spot of Stevia, Based on Multilocus Sequence Analysis

Sanabria-Velazquez, A. D., Enciso-Maldonado, G. A., Thiessen, L. D., & Shew, H. D. (2024, September 3). PLANT DISEASE.

By: A. Sanabria-Velazquez  n, G. Enciso-Maldonado *, L. Thiessen* & H. Shew  n

author keywords: center of origin; fungi; Paraguay; phylogenetics; seeds; Stevia rebaudiana
Source: Web Of Science
Added: September 23, 2024

2023 journal article

Integrated Pathogen Management in Stevia Using Anaerobic Soil Disinfestation Combined with Different Fungicide Programs in USA, Mexico, and Paraguay

AGRONOMY-BASEL, 13(5).

By: A. Sanabria-Velazquez  n, G. Enciso-Maldonado *, M. Maidana-Ojeda *, J. Diaz-Najera *, S. Ayvar-Serna *, L. Thiessen n, H. Shew  n

author keywords: Stevia rebaudiana [Bertoni]; sweetener; organic agriculture; pyroligneous acid; soil disinfestation; azoxystrobin; Sclerotium rolfsii; Septoria steviae
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: June 12, 2023

2022 article

First Report of Macrophomina euphorbiicola Causing Charcoal Rot of Stevia in Paraguay

Sanabria-Velazquez, A. D. D., Cubilla, A., Flores-Giubi, M. E., Barua, J. E. E., Romero-Rodriguez, C., Enciso-Maldonado, G. A. A., … Shew, H. D. (2023, January 2). PLANT DISEASE, Vol. 107.

By: A. Sanabria-Velazquez  n, A. Cubilla *, M. Flores-Giubi *, J. Barua *, C. Romero-Rodriguez *, G. Enciso-Maldonado, L. Thiessen n, H. Shew  n

author keywords: charcoal rot; Paraguay; stevia
TL;DR: Stevia (Stevia rebaudiana [Bertoni] Bertoni) is a perennial plant originating in Paraguay that is primarily cultivated for the production of non-caloric sweeteners and has been reported causing charcoal rot on stevia in Egypt and North Carolina. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: March 6, 2023

2022 article

Validation of Standard Area Diagrams to Estimate the Severity of Septoria Leaf Spot on Stevia in Paraguay, Mexico, and the United States

Sanabria-Velazquez, A. D., Enciso-Maldonado, G. A., Maidana-Ojeda, M., Diaz-Najera, J. F., Thiessen, L. D., & Shew, H. D. (2022, November 22). PLANT DISEASE.

By: A. Sanabria-Velazquez  n, G. Enciso-Maldonado, M. Maidana-Ojeda, J. Diaz-Najera *, L. Thiessen n & H. Shew  n

author keywords: disease severity; phytopathometry; Septoria steviae; Stevia rebaudiana
MeSH headings : United States; Stevia; Mexico; Reproducibility of Results; Paraguay; Ascomycota / genetics
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: June 26, 2023

2021 journal article

Adaptation of Phytophthora nicotianae to Multiple Sources of Partial Resistance in Tobacco

PLANT DISEASE, 106(3), 906–917.

By: J. Jin n, K. McCorkle n, V. Cornish n , I. Carbone n , R. Lewis n & H. Shew  n

author keywords: adaptation; ddRADseq; host resistance; Nicotiana rustica; Phytophthora nicotianae; tobacco
MeSH headings : Genotype; Phytophthora / genetics; Plant Diseases / genetics; Quantitative Trait Loci / genetics; Tobacco / genetics
TL;DR: The rapid adaptation to Wz resistance and the gradual adaptation to other QTLs highlights the need to study the nature of WZ resistance and for conducting field studies on efficacy of resistance-gene rotation for disease management. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 26, 2022

2021 article

Homoeologous chromosome exchange explains the creation of a QTL affecting soil-borne pathogen resistance in tobacco

Shi, R., Jin, J., Nifong, J. M., Shew, D., & Lewis, R. S. (2021, October 22). PLANT BIOTECHNOLOGY JOURNAL.

By: R. Shi n, J. Jin n, J. Nifong n, D. Shew n & R. Lewis n

author keywords: homoeologous exchange; QTL; resistance; SAR8; 2; tobacco; Phytophthora
MeSH headings : Chromosomes, Plant / genetics; Disease Resistance / genetics; Plant Diseases / genetics; Quantitative Trait Loci / genetics; Soil; Tobacco / genetics
TL;DR: A role for genomic rearrangements in the generation of favourable genetic variability affecting resistance to pathogens in plants is suggested. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: November 1, 2021

2021 journal article

Impacts of Continued Exposure to a Susceptible Host Genotype on Aggressiveness of Phytophthora nicotianae Isolates Adapted to Multiple Sources of Partial Resistance

PLANT DISEASE, 106(2), 373–381.

By: J. Jin n & H. Shew  n

author keywords: cultivar/resistance; disease management; field crops; partial resistance; Phytophthora nicotianae; oomycetes; tobacco
MeSH headings : Genotype; Phytophthora / genetics; Tobacco / genetics; Virulence
TL;DR: Analysis of the effects of continued exposure to a highly susceptible tobacco genotype on isolates of P. nicotianae that had been adapted to partial resistance suggested the rapid change in aggressiveness of isolates adapted to Wz-sourced partial resistance may have resulted from modification in gene expression in multiple genes. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: March 28, 2022

2021 journal article

RNAseq Reveals Differential Gene Expression Contributing to Phytophthora nicotianae Adaptation to Partial Resistance in Tobacco

AGRONOMY-BASEL, 11(4).

By: J. Jin n, R. Shi n, R. Lewis n & H. Shew n

author keywords: RNAseq; Phytophthora nicotianae; adaptation; partial resistance; tobacco
TL;DR: Understanding of the molecular mechanisms of P. nicotianae adaptation to partial resistance in tobacco is enhanced by elucidating how the pathogen recruits pathogenicity-associated genes that impact host biological activities. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: May 10, 2021

2020 journal article

Under the Scope: Microscopy Techniques to Visualize Plant Anatomy & Measure Structures

Under the Scope: Microscopy Techniques to Visualize Plant Anatomy & Measure Structures. AMERICAN BIOLOGY TEACHER, 82(4), 257–260.

By: A. Koehler *, M. Larkin* & H. Shew  n

author keywords: microscopy; high school education; undergraduate education; STEM; plant science; training tools
TL;DR: This activity, students section plant material and prepare specimens to view under a brightfield microscope to allow a better understanding of the relationships of the various structures observed in the functioning of plants. (via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education (Web of Science)
Source: Web Of Science
Added: August 10, 2020

2019 journal article

Biological controls over the abundances of terrestrial ammonia oxidizers

GLOBAL ECOLOGY AND BIOGEOGRAPHY, 29(2), 384–399.

By: R. Xiao *, Y. Qiu n, J. Tao*, X. Zhang  n, H. Chen n, S. Reberg-Horton  n, W. Shi n , H. Shew  n, Y. Zhang *, S. Hu n 

author keywords: ammonia-oxidizing archaea; ammonia-oxidizing bacteria; competition; meta-analysis; nitrification; soil C; N ratio
TL;DR: This study provides convincing evidence illustrating that relative carbon to nitrogen availability can predominantly affect the abundances of AOA and AOB, and validate that biotic competition among plants, heterotrophic microbes and ammonia oxidizers for substrate N is the predominant control upon AOAand AOB abundances. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: December 2, 2019

2019 journal article

Effect of post-application irrigation on fungicide movement and efficacy against Magnaporthiopsis poae

CROP PROTECTION, 122, 106–111.

By: W. Hutchens  n, T. Gannon n , H. Shew n & J. Kerns n

author keywords: Fungicide; Post-application; Irrigation; Lysirneter; Summer patch; Magnaporthiopsis pone
TL;DR: Isolates of M. poae are sensitive to commonly used fungicides and efficacy is enhanced by post-application irrigation due to improved fungicide distribution into the soil profile. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: July 15, 2019

2019 journal article

Effects of fungicide applications on root-infecting microorganisms and overwintering survival of perennial stevia

Crop Protection, 120, 13–20.

By: A. Koehler* & H. Shew n

author keywords: Soilborne fungi; Stevia; Overwintering survival; Fungicide trials
TL;DR: This study is one of the first to evaluate interactions between fungicide use and root associated fungi in a perennial crop and provides a framework to further investigate the role of root-associated fungi in overwintering survival of perennial stevia. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
15. Life on Land (OpenAlex)
Sources: Crossref, Web Of Science
Added: May 6, 2019

2019 journal article

Identification and characterization of Septoria steviae as the causal agent of Septoria leaf spot disease of stevia in North Carolina

Mycologia, 111(3), 456–465.

By: A. Koehler*, M. Larkin n, L. Rogers n, I. Carbone n , M. Cubeta n  & H. Shew  n

author keywords: Ascomycete; morphological characterization; phylogenetics; Stevia rebaudiana
MeSH headings : Ascomycota / genetics; Ascomycota / pathogenicity; DNA, Fungal / genetics; DNA, Ribosomal Spacer / genetics; North Carolina; Phylogeny; Plant Diseases / microbiology; Plant Leaves / microbiology; RNA, Ribosomal, 5.8S / genetics; Sequence Analysis, DNA; Stevia / microbiology
TL;DR: This study represents the first genetic characterization of S. steviae in the United States and provides an experimental framework to elucidate the genetic diversity and disease ecology of field populations of S.'svia rebaudiana. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: May 13, 2019

2018 journal article

Contrasting Warming and Ozone Effects on Denitrifiers Dominate Soil N2O Emissions

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 52(19), 10956–10966.

By: Y. Qu, Y. Jiang n, L. Guo  n, K. Burkey n, R. Zobel n, H. Shew  n, S. Hu n 

MeSH headings : Greenhouse Gases; Nitrous Oxide; Ozone; Soil; Soil Microbiology
TL;DR: It is suggested that warming may promote N2O production through increasing both the abundance and activities of N 2O-producing microbes, positively feeding back to the ongoing climate change. (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: October 19, 2018

2018 journal article

Field efficacy and baseline sensitivity of Septoria steviae to fungicides used for managing Septoria leaf spot of stevia

CROP PROTECTION, 109, 95–101.

By: A. Koehler n & H. Shew n

author keywords: Fungal pathogens; Fungicide efficacy; Fungicide baseline
TL;DR: Field efficacy and baseline sensitivity of Septoria steviae to fungicides used for managing Septoria leaf spot of stevia, an herbaceous perennial emerging as a new crop in the southeastern US, are studied. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2018 journal article

Prolonged Shipping and Fluctuating Temperatures Promote Gray Mold Development and Leaf Yellowing on Geranium Liners

HORTTECHNOLOGY, 28(6), 711–718.

By: N. Jahnke n, J. Dole n & H. Shew  n

author keywords: air temperature; botrytis blight; Botrytis cinerea; Pelargonium x hortorum; rooted cuttings
Source: Web Of Science
Added: February 18, 2019

2017 journal article

Characterization of Phytophthora nicotianae Resistance Conferred by the Introgressed Nicotiana rustica Region, Wz, in Flue-Cured Tobacco

PLANT DISEASE, 102(2), 309–317.

By: K. McCorkle  n, K. Drake-Stowe n, R. Lewis n & D. Shew n

MeSH headings : Genotype; Phytophthora / pathogenicity; Phytophthora / physiology; Plant Diseases / genetics; Plant Diseases / microbiology; Tobacco / genetics; Tobacco / microbiology; Virulence
TL;DR: This study found Wz-mediated resistance is most highly expressed in the roots, with only a slight reduction in stem-lesion size in Wz genotypes compared with susceptible controls, suggesting pathogen adaptation was specific to the Wz gene. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2017 journal article

Characterization of the Black Shank Pathogen, Phytophthora nicotianae, Across North Carolina Tobacco Production Areas

PLANT DISEASE, 102(6), 1108–1114.

By: C. Gallup, K. McCorkle  n, K. Ivors * & D. Shew n

MeSH headings : Agriculture; Alanine / analogs & derivatives; Alanine / pharmacology; Drug Resistance, Fungal; Fungicides, Industrial / pharmacology; North Carolina; Phytophthora / drug effects; Phytophthora / physiology; Tobacco / microbiology
TL;DR: Molecular characterization of 226 isolates revealed that the pathogen exists as multiple clonal types within the state, indicating for the first time the potential for sexual sporulation by P. nicotianae in natural populations. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2017 journal article

Enhanced Overwintering Survival of Stevia by Qol Fungicides Used for Management of Sclerotium rolfsii

PLANT DISEASE, 101(8), 1417–1421.

By: A. Koehler n & H. Shew n

MeSH headings : Ascomycota; Fungicides, Industrial / standards; North Carolina; Plant Diseases / microbiology; Stevia / microbiology; Stevia / physiology; Survival Analysis
TL;DR: Stevia (Stevia rebaudiana) is a herbaceous perennial under evaluation as a new crop in the southeastern United States and fungicides evaluated included azoxystrobin, flutolanil, and tebuconazole applied at three timings enhanced overwintering survival. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2017 article

First Report of Charcoal Rot of Stevia Caused by Macrophomina phaseolina in North Carolina

Koehler, A. M., & Shew, H. D. (2018, January). PLANT DISEASE, Vol. 102, pp. 241–241.

By: A. Koehler n & H. Shew n

UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2017 journal article

First report of pythium root rot of stevia caused by Pythium myriotylum, P. irregulare, and P. aplzanidermatum in North Carolina

Plant Disease, 101(7), 1331–1332.

By: A. Koehler, E. Lookabaugh, B. Shew & H. Shew

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

2017 journal article

Seasonal dynamics and fungicide sensitivity of organisms causing brown patch of tall fescue in North Carolina

MYCOLOGIA, 109(4), 667–675.

By: A. Koehler n & H. Shew  n

author keywords: Binucleate Rhizoctonia; Thanatephorus cucumeris; turfgrass; Waitea circinata var. zeae
MeSH headings : Basidiomycota / classification; Basidiomycota / drug effects; Basidiomycota / isolation & purification; DNA, Fungal / genetics; DNA, Ribosomal Spacer / genetics; Festuca / microbiology; Fungicides, Industrial / pharmacology; Microbial Sensitivity Tests; North Carolina; Plant Diseases / microbiology; Rhizoctonia / classification; Rhizoctonia / drug effects; Rhizoctonia / genetics; Rhizoctonia / isolation & purification; Seasons
TL;DR: Sensitivity of the May 2014 isolates to multiple concentrations of the fungicides azoxystrobin, flutolanil, fluxapyroxad, and propiconazole was compared with sensitivity of isolates collected in 2003, to determine whether multiple years of exposure to fungicides applied for brown patch control had altered fungicide sensitivity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2017 journal article

The Tobacco Trichome Exudate Z-abienol and Its Relationship With Plant Resistance to Phytophthora nicotianae

PLANT DISEASE, 101(7), 1214–1221.

By: W. Steede n, J. Ma, D. Eickholt n, K. Drake-Stowe n, S. Kernodle n, H. Shew  n, D. Danehower n, R. Lewis n

TL;DR: Results suggest that, although Z-abienol may affect P. nicotianae when applied at high concentrations in in vitro assays, the compound has little effect on black shank disease development under natural field conditions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2016 journal article

Increased diversity of Phytophthora species in Fraser fir Christmas tree plantations in the Southern Appalachians

Scandinavian Journal of Forest Research, 32(5), 412–420.

By: M. Pettersson  n, J. Frampton n, J. Rönnberg *, H. Shew n, D. Benson n, W. Kohlway n, M. Escanferla n, M. Cubeta n 

author keywords: Abies fraseri; North Carolina; Phytophthora cinnamomi; root rot; survey
TL;DR: During 2014, Fraser fir Christmas tree plantations in the Southern Appalachians of North Carolina, Tennessee and Virginia were surveyed to determine the occurrence of pathogenic root-rotting species of Phytophthora and the pathogenicity of P. citrophthora was confirmed based on completion of Koch's postulates. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2015 journal article

Molecular identification and pathogenicity of Rhizoctonia spp. from tobacco growing areas in northwestern Argentina

TROPICAL PLANT PATHOLOGY, 40(3), 160–168.

By: G. Mercado Cardenas *, M. Galvan *, V. Barrera, M. Rodriguero, M. Carmona, G. March, A. Ramallo*, H. Shew  n

author keywords: Nicotiana tabacum; ITS; Anastomosis group (AG); Vegetative compatibility
TL;DR: In Argentina, more than 60 % of the tobacco crops are grown in the northwestern part of the country and where Rhizoctonia solani leads to a reduction in crop yield and quality, and isolates obtained from 32 tobacco fields in northwestern Argentina were characterized by both morphological and molecular approaches. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2014 article

First Report of Stem Rot of Stevia Caused by Sclerotinia sclerotiorum in North Carolina

Koehler, A., & Shew, H. (2014, October). PLANT DISEASE, Vol. 98, pp. 1433–1433.

By: A. Koehler n & H. Shew n

TL;DR: Diseased plants were observed in several counties in the state in fields that had been planted primarily in a corn-soybean rotation prior to stevia planting, and symptoms included wilting, chlorotic leaves, necrotic leaves at the base of the stem, bleached stem lesions, and dead plants. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2014 article

First Report of Stem and Root Rot of Stevia Caused by Sclerotium rolfsii in North Carolina

Koehler, A., & Shew, H. (2014, July). PLANT DISEASE, Vol. 98, pp. 1005–1005.

By: A. Koehler  n & H. Shew n

TL;DR: In commercial plantings of Stevia in North Carolina, wilting and death of plants in first- and second-year plantings were observed in 2012 and 2013, with S. rolfsii as the causal agent and symptoms began as moderate to severe wilting of young shoots and chlorosis of leaves, rapidly followed by death of stems and rotting of roots. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Soil microbial responses to elevated CO2 and O-3 in a nitrogen-aggrading agroecosystem

Carbon Capture and Storage: CO2 Management Technologies, 277–307.

By: L. Cheng, F. Booker, K. Burkey, C. Tu, H. Shew, T. Rufty, E. Fiscus, J. Deforest, S. Hu 

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

2012 journal article

Arbuscular Mycorrhizal Fungi Increase Organic Carbon Decomposition Under Elevated CO2

SCIENCE, 337(6098), 1084–1087.

By: L. Cheng n, F. Booker n, C. Tu n, K. Burkey  n, L. Zhou n, H. Shew  n, T. Rufty  n, S. Hu n 

MeSH headings : Carbon / metabolism; Carbon Dioxide / metabolism; Mycorrhizae / metabolism; Nitrogen / metabolism; Plant Development; Plants / microbiology; Soil Microbiology
TL;DR: Evidence is presented from four independent microcosm and field experiments demonstrating that CO2 enhancement of AMF results in considerable soil carbon losses, challenging the assumption that AMF protect against degradation of organic carbon in soil and raising questions about the current prediction of terrestrial ecosystem carbon balance under future climate-change scenarios. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Resistance to Phytophthora nicotianae in Tobacco Breeding Lines Derived from Variety Beinhart 1000

PLANT DISEASE, 97(2), 252–258.

By: K. McCorkle*, R. Lewis & D. Shew n

TL;DR: The partial resistance from BH has not been used commercially and may provide an increase in level of partial resistance in future tobacco varieties. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2012 journal article

Tuber Rot of Potato Caused by Phytophthora nicotianae: Isolate Aggressiveness and Cultivar Susceptibility

PLANT DISEASE, 96(5), 693–704.

By: R. Taylor*, J. Pasche *, H. Shew, K. Lannon n & N. Gudmestad *

TL;DR: Examination of potato (Solanum tuberosum) cultivar susceptibility, the potential of other host species to act as sources of inoculum for potato infections, and other aspects of potato-Phytophthora nicotianae interactions confirmed previous observations of naturally occurring infections of potato in Missouri, Nebraska, and Texas, as well as infections in Michigan. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2011 article

SOIL MICROBIAL RESPONSES TO ELEVATED CO2 AND O-3 IN A NITROGEN-AGGRADING AGROECOSYSTEM

CARBON CAPTURE AND STORAGE: CO2 MANAGEMENT TECHNOLOGIES, Vol. 6, pp. 277–307.

By: L. Cheng n, F. Booker n, K. Burkey n, C. Tu n, H. Shew  n, T. Rufty  n, E. Fiscus n, J. Deforest *, S. Hu n 

MeSH headings : Aerobiosis / drug effects; Agriculture; Bacteria / drug effects; Biomass; Carbon / metabolism; Carbon Dioxide / pharmacology; Ecosystem; Fatty Acids / analysis; Fungi / drug effects; Minerals / metabolism; Nitrogen / metabolism; Nitrogen Fixation / drug effects; Ozone / pharmacology; Phospholipids / analysis; Seasons; Soil; Soil Microbiology; Soybeans / drug effects; Soybeans / physiology
TL;DR: The results suggest that more attention should be directed towards assessing the impact of N availability on microbial activities and decomposition in projections of soil organic C balance in N-rich systems under future CO2 scenarios. (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, NC State University Libraries
Added: August 6, 2018

2011 journal article

Variability for Resistance to Phytophthora nicotianae Within a Collection of Nicotiana rustica Accessions

PLANT DISEASE, 95(11), 1443–1447.

By: J. Nifong*, J. Nicholson*, H. Shew* & R. Lewis n

TL;DR: Materials found to be highly resistant to race 0 and race 1 in growth-chamber experiments also had the best survivability in field disease nurseries and could have value for burley and flue-cured tobacco breeding. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2010 journal article

An Assessment of the Genetic Diversity in a Field Population of Phytophthora nicotianae with a Changing Race Structure

PLANT DISEASE, 94(4), 455–460.

By: M. Sullivan*, E. Parks n, M. Cubeta n , C. Gallup n, T. Melton n, J. Moyer*, H. Shew n

TL;DR: Deployment of single-gene resistance initially decreased genetic diversity of the population, but the diversity increased each year, indicating the pathogen was adapting to the host genotypes deployed in the field. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

Occurrence of Race 3 of Phytophthora nicotianae in North Carolina, the Causal Agent of Black Shank of Tobacco

PLANT DISEASE, 94(5), 557–562.

By: C. Gallup n & H. Shew n

TL;DR: Black shank, caused by the oomycete Phytophthora nicotianae, is reported here for the first time from North Carolina and the first report of damage to seedlings from root inoculations and to plants containing the Phl gene in naturally infested soil. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

A foliar blight and tuber rot of potato caused by Phytophthora nicotianae: New occurrences and characterization of isolates

PLANT DISEASE, 92(4), 492–503.

By: R. Taylor*, J. Pasche *, C. Gallup n, H. Shew  n & N. Gudmestad *

author keywords: Solanum tuberosum; water rot
TL;DR: Another Phytophthora sp. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Evaluation of tobacco germplasm for seedling resistance to stem rot and target spot caused by Thanatephorus cucumeris

PLANT DISEASE, 92(3), 425–430.

By: P. Elliott, R. Lewis*, H. Shew*, W. Gutierrez* & J. Nicholson n

TL;DR: Ninety-seven genotypes composing several classes of tobacco and related Nicotiana spp. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Expression of the bacteriophage T4 lysozyme gene in tall fescue confers resistance to gray leaf spot and brown patch diseases

TRANSGENIC RESEARCH, 17(1), 47–57.

By: S. Dong n, H. Shew  n, L. Tredway n, J. Lu n, E. Sivamani n, E. Miller n , R. Qu n

author keywords: fungal resistance; Magnaporthe grisea; Rhizoctonia solani; T4 lysozyme; tall fescue
MeSH headings : Bacteriophage T4 / enzymology; Bacteriophage T4 / genetics; Cloning, Molecular; Festuca / enzymology; Festuca / genetics; Festuca / microbiology; Gene Expression; Genes, Viral; Genetic Vectors; Magnaporthe / pathogenicity; Muramidase / genetics; Plant Diseases / genetics; Plant Diseases / microbiology; Plants, Genetically Modified; Rhizobium / genetics; Rhizoctonia / pathogenicity
TL;DR: It is demonstrated that the bacteriophage T4 lysozyme gene confers resistance to both gray leaf spot and brown patch diseases in transgenic tall fescue plants, which may have wide applications in engineered fungal disease resistance in various crops. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

Phylogeography of the Solanaceae-infecting Basidiomycota fungus Rhizoctonia solani AG-3 based on sequence analysis of two nuclear DNA loci

BMC Evolutionary Biology, 7(1), 163.

By: P. Ceresini*, H. Shew  n, T. James *, R. Vilgalys * & M. Cubeta n 

MeSH headings : Cloning, Molecular; DNA, Fungal / genetics; Evolution, Molecular; Genetic Variation; Genotype; Haplotypes; Likelihood Functions; Mycological Typing Techniques; Phylogeny; Polymerase Chain Reaction; Rhizoctonia / classification; Rhizoctonia / genetics; Sequence Analysis, DNA; Solanaceae / genetics; Solanaceae / microbiology; Species Specificity; Tobacco / genetics; Tobacco / microbiology
TL;DR: Two sisters populations of the basidiomycete fungus R. solani AG-3 from potato and tobacco represent two genetically distinct and historically divergent lineages that have probably evolved within the range of their particular related Solanaceae hosts as sympatrics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2007 journal article

Resistance of transgenic tall fescue to two major fungal diseases

PLANT SCIENCE, 173(5), 501–509.

By: S. Dong n, L. Tredway n, H. Shew  n, G. Wang *, E. Sivamani n & R. Qu n

author keywords: alfalfa AGLU1 gene; dermaseptin SI gene; fungal resistance; Magnaporthe grisea; Rhizoctonia solani; rice Pi9 gene
TL;DR: Of 15 T0 transgenic plants examined, 6 showed high levels of resistance to M. grisea, and 3 had enhanced resistance to R. solani, and the resistance in most of these cases was highly significant. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Differential sensitivity of Phytophthora parasitica var. nicotianae and Thielaviopsis basicola to monomeric aluminum species

Phytopathology, 96(3), 212.

By: E. Fichtner, D. Hesterberg* , T. Smyth* & H. Shew*

Contributors: E. Fichtner, D. Hesterberg* , T. Smyth* & H. Shew*

TL;DR: The sensitivity of T. nicotianae and P. basicola to Al was pH-dependent, suggesting that only Al(3+) is responsible for suppression of this fungal pathogen. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries, ORCID
Added: August 6, 2018

2005 journal article

Fitness of races 0 and 1 of Phytophthora parasitica var. nicotianae

PLANT DISEASE, 89(11), 1220–1228.

By: M. Sullivan*, T. Melton n & H. Shew n

author keywords: black shank; oomycete
TL;DR: Race shifts from race 1 to race 0 that were observed in the presence of cultivars with partial resistance appear to be primarily the result of differences in aggressiveness of the races, with a possible minor effect of enhanced overwintering survival of race 0 compared with race 1. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Managing the race structure of Phytophthora parasitica var. nicotianae with cultivar rotation

PLANT DISEASE, 89(12), 1285–1294.

By: M. Sullivan*, T. Melton n & H. Shew n

author keywords: Fla. 301 Nicotiana tabacum
TL;DR: A rotation between cultivARS with single-gene resistance and cultivars with a high level of partial resistance should provide the most effective approach to black shank management and, over time, should prolong the usefulness of the Ph gene forblack shank control in commercial production of tobacco. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Abiotic and biological suppression of Phytophthora parasitica in a horticultural medium containing composted swine waste

PHYTOPATHOLOGY, 94(7), 780–788.

By: E. Fichtner, D. Benson*, H. Diab & H. Shew*

TL;DR: Al amendment of a 20% CSW potting medium enhanced suppression of P. parasitica and abiotic suppression occurred before biological suppression developed, and exchangeable Al levels decreased over time. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Effect of soluble silica on brown patch and dollar spot of creeping bentgrass

JOURNAL OF PLANT NUTRITION, 27(2), 325–339.

By: R. Uriarte n, H. Shew n & D. Bowman n

author keywords: turfgrass disease; Rhizoctonia solani; Sclerotinia homoeocarpa; integrated pest management
TL;DR: Assessment of the potential of soluble silica for reducing the severity or incidence of disease on creeping bentgrass found it may provide some degree of protection from dollar spot and brown patch, but the level of control is unlikely to satisfy expectations for putting green turf quality. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Detecting migrants in populations of Rhizoctonia solani anastomosis group 3 from potato in North Carolina using multilocus genotype probabilities

PHYTOPATHOLOGY, 93(5), 610–615.

By: P. Ceresini*, H. Shew*, R. Vilgalys, L. Gale & M. Cubeta* 

author keywords: migrant genotypes; population genetics; Thanatephorus cucumeris
TL;DR: The one-way (unidirectional) migration of genotypes of R. solani AG-3 into NC on infested potato seed tubers from Canada, Maine, and Wisconsin provides a plausible explanation for the lack of genetic subdivision between populations of the pathogen in NC soils or between the northern source and the NC recipient soil populations. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2002 journal article

Genetic diversity of Rhizoctonia solani AG-3 from potato and tobacco in North Carolina

MYCOLOGIA, 94(3), 437–449.

By: P. Ceresini n, H. Shew n, R. Vilgalys  n & M. Cubeta n 

author keywords: clonality; genetic structure; mating; population structure; recombination
TL;DR: The genetic diversity of field populations of R. solani AG-3 PT andAG-3 TB in North Carolina was examined using somatic compatibility and amplified fragment length polymorphism (AFLP) criteria and found compatible somatic interactions occurred only between certain isolates from the same field, and when this occurred AFLP phenotypes were similar but not identical. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2002 journal article

Genetic structure of populations of Rhizoctonia solani AG-3 on potato in eastern North Carolina

MYCOLOGIA, 94(3), 450–460.

By: P. Ceresini*, H. Shew n, R. Vilgalys *, U. Rosewich* & M. Cubeta n 

author keywords: migration; population subdivision; Thanatephorus cucumeris
TL;DR: A model of population structure for R. solani AG-3 PT on potato that includes both recombination and clonality is supported, supported by a polymerase chain reaction-restriction fragment length polymorphism method. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
14. Life Below Water (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2002 journal article

Origin of the black shank resistance gene, Ph, in tobacco cultivar Coker 371-gold

PLANT DISEASE, 86(10), 1080–1084.

By: E. Johnson n, M. Wolff n, E. Wernsman n, W. Atchely & H. Shew n

author keywords: disease resistance genes; gene phylogeny
TL;DR: Testcross populations of hybrids between burley lines homozygous for Ph and L8, possessing Phl from N. longiflora, showed that Ph and Phl integrated into the same tobacco chromosome during interspecific transfer, and Random amplified polymorphic DNA (RAPD) analyses of the testcross progenies confirmed that recombination between the two loci was occurring. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2001 chapter

Direct penetration

In O. C. Maloy & T. D. Murray (Eds.), Encyclopedia of plant pathology: Vol. 1 (pp. 311–312). New York: John Wiley and Sons, Inc.

By: H. Shew

Ed(s): . O. C. Maloy & T. Murray

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

2001 journal article

Effects of soil pH and nitrogen fertility on the population dynamics of Thielaviopsis basicola

PLANT AND SOIL, 228(2), 147–155.

By: U. Harrison n & H. Shew n

author keywords: black root rot; Chalara elegans; nitrogen form; polyamines; putrescine; suppressive soils
TL;DR: Soil acidifying fertilizers containing NH4–N have potential for management of black root rot by suppressing populations of T. basicola over multiple years of crop production and may partially be due to development of an inhibitory environment in the root and not solely to changes in rhizosphere pH. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2001 chapter

Indirect penetration

In O. C. Maloy & T. D. Murray (Eds.), Encyclopedia of plant pathology: Vol. 1 (p. 571). New York: John Wiley and Sons, Inc.

By: H. Shew

Ed(s): . O. C. Maloy & T. Murray

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

2001 chapter

Infection

In O. C. Maloy & T. D. Murray (Eds.), Encyclopedia of plant pathology: Vol. 1 (pp. 572–574). New York: John Wiley and Sons, Inc.

By: H. Shew

Ed(s): . O. C. Maloy & T. Murray

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

2001 chapter

Infection courts

In O. C. Maloy & T. D. Murray (Eds.), Encyclopedia of plant pathology: Vol. 1 (pp. 574–575). New York: John Wiley and Sons, Inc.

By: H. Shew

Ed(s): . O. C. Maloy & T. Murray

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

2001 journal article

Nonphytotoxic aluminum-peat complexes suppress Phytophthora parasitica

PHYTOPATHOLOGY, 91(11), 1092–1097.

By: E. Fichtner, D. Hesterberg*  & H. Shew*

Contributors: E. Fichtner, D. Hesterberg*  & H. Shew*

TL;DR: The prevalence of Al(OH)(2)(+) in peat amended with Al(2)(SO(4))(3) solution at pH 6 suggests that ions other than Al(3+) may be responsible for pathogen suppression. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2001 chapter

Penetration

In O. C. Maloy & T. D. Murray (Eds.), Encyclopedia of plant pathology: Vol. 1 (pp. 747–748). New York: John Wiley and Sons, Inc.

By: H. Shew

Ed(s): . O. C. Maloy & T. Murray

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

2000 journal article

Evaluation of wounds as a factor to infection of cabbage by ascospores of Sclerotinia sclerotiorum

PLANT DISEASE, 84(3), 316–320.

By: J. Hudyncia n, H. Shew n, B. Cody n & M. Cubeta n 

TL;DR: Results indicate that freeze and bruise injuries are important factors associated with infection of cabbage by S. sclerotiorum. (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: August 6, 2018

2000 journal article

Factors that affect development of collar rot on tobacco seedlings grown in greenhouses

PLANT DISEASE, 84(10), 1076–1080.

By: W. Gutierrez n & H. Shew n

author keywords: apothecium production; ascospore inoculation
TL;DR: Adoption of cultural practices that minimize accumulation of leaf debris and eliminate factors that cause necrotic injury on leaves should greatly reduce the severity of collar rot of tobacco seedlings. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Identification and quantification of ascospores as the primary inoculum for collar rot of greenhouse-produced tobacco seedlings

PLANT DISEASE, 82(5), 485–490.

By: W. Gutierrez n & H. Shew n

author keywords: Nicotiana tabacum; spore trapping
TL;DR: The semiselective medium and trapping technique used in this study may allow development of a forecasting system for collar rot of tobacco based on the presence and level of pathogen inoculum. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1997 journal article

Inheritance of resistance to race 0 of Phytophthora parasitica var. nicotianae from the flue-cured tobacco cultivar Coker 371-Gold

Plant Disease, 81(11), 1269–1274.

By: S. Carlson*, M. Wolff*, H. Shew* & E. Wernsman n

TL;DR: The recently released tobacco cultivar, Coker 371-Gold (C 371-G), was found to provide an additional source of resistance to P. parasitica var. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

1997 journal article

Initial cellular interactions between Thielaviopsis basicola and tobacco root hairs

PHYTOPATHOLOGY, 87(3), 228–235.

By: M. Hood & H. Shew*

author keywords: black root rot; Chalara elegans; histopathology
TL;DR: The establishment of the parasitic relationship by T. basicola was characteristic of hemibiotrophic fungi in that, initially, biotrophic infection led to tissue colonization, and host cell survival was limited under parasitism. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1997 journal article

Reassessment of the role of saprophytic activity in the ecology of Thielaviopsis basicola

PHYTOPATHOLOGY, 87(12), 1214–1219.

By: M. Hood & H. Shew*

TL;DR: Based on the absence of significant saprophytic ability, T. basicola should be classified ecologically as an obligate parasite. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1997 journal article

Sources of inoculum and management for Rhizoctonia solani damping-off on tobacco transplants under greenhouse conditions

PLANT DISEASE, 81(6), 604–606.

By: W. Gutierrez n, H. Shew n & T. Melton n

TL;DR: Elimination of primary inoculum from previously used trays effectively controlled target spot and stem rot diseases caused by R. solani. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1997 journal article

The influence of nutrients on development, resting hyphae and aleuriospore induction of Thielaviopsis basicola

MYCOLOGIA, 89(5), 793–800.

By: M. Hood  n & H. Shew n

author keywords: Chalara elegans; chlamydospore; hemibiotroph
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1995 journal article

Target of spot of tobacco

Plant Disease, 79(1), 6.

By: H. Shew* & T. Melton

UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

1993 journal article

EFFECTS OF HOST-RESISTANCE AND SOIL FUMIGATION ON THIELAVIOPSIS-BASICOLA AND DEVELOPMENT OF BLACK ROOT-ROT ON BURLEY TOBACCO

PLANT DISEASE, 77(10), 1035–1039.

By: H. Shew* & P. Shoemaker

TL;DR: Cultivars of burley tobacco with different levels of resistance to Thielaviopsis basicola were planted in fields naturally infested with the pathogen and the severity of root rot and the reproduction of T. basicola was determined at transplant, midseason, and after final harvest. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1990 journal article

INFECTION AND DEVELOPMENT OF TARGET SPOT OF FLUE-CURED TOBACCO CAUSED BY THANATEPHORUS-CUCUMERIS

PLANT DISEASE, 74(12), 1009–1013.

By: H. Shew* & C. Main

TL;DR: Three isolates of Thanatephorus cucumeris produced hymenia and basidiospores equally when exposed to moderate temperatures and extended periods of high relative humidity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1979 journal article

EVIDENCE FOR THE INVOLVEMENT OF SOILBORNE MITES IN PYTHIUM POD ROT OF PEANUT

PHYTOPATHOLOGY, 69(3), 204–207.

By: H. Shew* & M. Beute

TL;DR: Evaluated the effectiveness of several acaricides and broad spectrum peanut plants in South Africa and under certain conditions insecticides in reducing pod rot incidence and severity and the role of soilborne mites in this study. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

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