Martha Elena Ramirez

Works (9)

Updated: July 5th, 2023 16:04

2021 journal article

An exploration of the variability of physiological responses to soil drying in relation with C/N balance across three species of the under-utilized genus Vigna

PHYSIOLOGIA PLANTARUM, 172(2), 477–486.

By: J. Guiguitant*, H. Marrou*, D. Vile *, T. Sinclair n, D. Pradhan n, M. Ramirez*, M. Ghanem *

author keywords: leaf traits; N fixation; response to soil drying; transpiration; Vigna
MeSH headings : Droughts; Fabaceae; Plant Leaves; Soil; Vigna
TL;DR: Through the analysis of leaf traits variation under well-watered and water-deficit conditions, it was able to relate the variability in N2 fixation and transpiration response to C/N metabolism modifications resulting in different allocation of carbon and nitrogen to leaves under water deficit. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
6. Clean Water and Sanitation (OpenAlex)
Source: Web Of Science
Added: November 24, 2020

2020 journal article

Nitrogen-fixation drought tolerance in virginia-type peanut

JOURNAL OF CROP IMPROVEMENT, 34(4), 540–548.

By: D. Pradhan n, J. Dunne n , M. Ramirez* & T. Sinclair n

author keywords: Acetylene reduction activity; drought; leaf nitrogen concentration; nitrogen fixation; peanut; soil drying
TL;DR: None of the lines exhibited substantial tolerance of nitrogen fixation to soil drying, indicating a need to search an even more diverse population of peanut to identify a genetic source for tolerance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Sources: Web Of Science, ORCID
Added: April 20, 2020

2011 journal article

Effects of temperature during soybean seed development on defense-related gene expression and fungal pathogen accumulation

BIOTECHNOLOGY LETTERS, 33(12), 2397–2404.

By: R. Upchurch n & M. Ramirez n

author keywords: Defense-related gene expression in seeds; Fungal pathogens; Glycine max; Temperature regimen
MeSH headings : Ascomycota / physiology; Gene Expression Regulation, Plant / physiology; Plant Proteins / metabolism; Seeds / microbiology; Seeds / physiology; Soybeans / microbiology; Soybeans / physiology; Temperature
TL;DR: Temperature regimens applied during seed development produced significant changes in seed defense-related gene expression both pre- and post inoculation and the hypothesis that global climate change may alter plant–pathogen interactions and thereby potentially crop productivity is supported. (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

2011 journal article

Soybean Plastidal Omega-3 Fatty Acid Desaturase Genes GmFAD7 and GmFAD8: Structure and Expression

CROP SCIENCE, 51(4), 1673–1682.

By: R. Upchurch n & M. Ramirez n

TL;DR: The genomic structure and deduced amino acid sequence of soybean FAD7 and FAD8 are similar to other higher plant plastidal w-3 desaturases: eight exons and seven introns, predicted proteins of 453 amino acid residues containing three conserved histidine motifs, amino terminal chloroplast transit peptides, and molecular masses of 51.3 and 51.4 kDa. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2010 journal article

Gene Expression Profiles of Soybeans with Mid-Oleic Acid Seed Phenotype

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 87(8), 857–864.

By: R. Upchurch n & M. Ramirez n

author keywords: GmFATB1a; GmSACPD-A, -B, -C; GmFAD2-1A,-1B; GmFAD2-2; GmFAD2-3; Allele; Oleic acid; qRT-PCR
TL;DR: This finding suggests that of the several soybean genomic loci known or suspected to be involved in oleic acid phenotype, some are likely to encode genes involved in regulation of transcription of the oleate biosynthetic genes. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Anabaena sp strain PCC 7120 gene devH is required for synthesis of the heterocyst glycolipid layer

JOURNAL OF BACTERIOLOGY, 187(7), 2326–2331.

By: M. Ramirez n, P. Hebbar n, R. Zhou *, C. Wolk* & S. Curtis n

MeSH headings : Aerobiosis; Anabaena / genetics; Anabaena / metabolism; Anabaena / ultrastructure; Bacterial Proteins / biosynthesis; Bacterial Proteins / genetics; Gene Expression Regulation, Bacterial / physiology; Genes, Bacterial / physiology; Glycolipids / biosynthesis; Mutation; Nitrogen / physiology; Nitrogen Fixation / genetics; Nitrogen Fixation / physiology; Operon; Phenotype; Transcription Factors
TL;DR: It is demonstrated that rearrangements of nitrogen fixation genes take place normally in the devH mutant and that it is Fix(+), i.e., has nitrogenase activity under anoxic conditions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Using spontaneous antibiotic-resistant mutants to assess competitiveness of bradyrhizobial inoculants for nodulation of soybean

CANADIAN JOURNAL OF MICROBIOLOGY, 44(8), 753–758.

By: M. Ramirez*, D. Israel* & A. Wollum

author keywords: Bradyrhizobium; antibiotic resistance; competition
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

Phenotypic and genotypic diversity of similar serotypes of soybean bradyrhizobia from two soil populations

SOIL BIOLOGY & BIOCHEMISTRY, 29(9-10), 1539–1545.

By: M. Ramirez n, D. Israel n & A. Wollum n

TL;DR: The physiological and genetic diversity within two major serotypic groups of bradyrhizobial isolates obtained from soybean plants grown on a Dothan and a Cape Fear soil was examined and pulsed-field gel-electrophoresis pattern was the only trait that generated groups of isolates that were similar with respect to other measured traits. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1997 journal article

Phenotypic characterization of soybean bradyrhizobia in two soils of North Carolina

Soil Biology & Biochemistry, 29(9-10), 1547–1555.

By: M. Ramirez n, D. Israel n & A. Wollum n

TL;DR: Serotypic composition of nodules from five soybean cultivars grown on two soils of the Atlantic Coastal Plain of North Carolina was characterized and symbiotic N;?-fixation efficiency, capacity for induction of foliar chlorosis symptomatic of rhizobitoxine production and antibiotic resistances of isolates purified from these nodules were determined. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
14. Life Below Water (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

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