A5071397553- Soybean genetics and cultivation
- Nematode management and characterization studies
- Legume Nitrogen Fixing Symbiosis
- Soil Carbon and Nitrogen Dynamics
- Plant Pathogens and Resistance
- Genetic Mapping and Diversity in Plants and Animals
- Cassava research and cyanide
- Plant Disease Management Techniques
- Plant pathogens and resistance mechanisms
- Soil Management and Crop Yield
- Crop Yield and Soil Fertility
- Agronomic Practices and Intercropping Systems
- Plant responses to water stress
- Plant Pathogens and Fungal Diseases
- Genetics and Plant Breeding
- Insect-Plant Interactions and Control
- Soil and Unsaturated Flow
- Plant Disease Resistance and Genetics
- Plant Genetic and Mutation Studies
- Plant Pathogenic Bacteria Studies
- Plant biochemistry and biosynthesis
- Plant-Microbe Interactions and Immunity
- Plant nutrient uptake and metabolism
- Fungal Plant Pathogen Control
- Genetic and phenotypic traits in livestock
Agricultural Research Service
2009-2022
United States Department of Agriculture
2002-2018
Jackson State University
2006-2011
University of Missouri
1998-2001
Soybean cyst nematode (SCN) ( Heterodera glycines Ichinohe), the most destructive pest of soybean [ Glycine max (L.) Merrill], is estimated to be responsible for almost nine million megagrams in annual yield loss worldwide. Host plant resistance cost‐effective and environmentally friendly method controlling SCN. Resistance present among introductions (PIs) related wild species, such as soja Sieb. Zucc. Molecular marker technology has ushered a decade devoted identification characterization...
Soybean cyst nematode (SCN) is the most economically devastating pathogen of soybean. Two resistance loci, Rhg1 and Rhg4 primarily contribute to SCN race 3 in Peking PI 88788 are two major sources with requiring both alleles only allele. Although simple sequence repeat (SSR) markers have been reported for they linked limited be applied breeding programs due accuracy, throughput cost detection methods. The objectives this study were develop robust functional marker assays high-throughput...
Soybean is an important oil-producing crop in the Fabaceae family and there are increasing demands for soybean oil other products. Genetic improvement of needed to increase its production. In order provide genetic diversity resources identifying genes, a new ethyl methane sulfonate (EMS) mutagenized population was generated using newly released germplasm, JTN-5203 (maturity group V). Treatment seeds with 60 mM EMS concentration found be suitable inducing mutation. A total 1,820 M1...
Soybean cyst nematode (SCN) ( Heterodera glycines Ichinohe) is the most important pest of soybean [ Glycine max (L.) Merr.] in world. A total 17 quantitative trait locus (QTL) mapping papers and 62 marker–QTL associations have been reported for resistance to soybean. Conflicting results often occurred. The objectives this study were to: (i) evaluate evidence SCN (ii) extract relatively reliable useful information from meta‐analysis was conducted QTL locations by comparing 95% confidence...
Summary Salicylic acid plays a critical role in activating plant defence responses after pathogen attack. methyltransferase (SAMT) modulates the level of salicylic by converting to methyl salicylate. Here, we report that SAMT gene from soybean ( GmSAMT1 ) against cyst nematode Heterodera glycines Ichinohe, SCN). was identified as candidate SCN defence‐related our previous analysis using GeneChip microarray experiments. The current study started with isolation full‐length cDNA s SCN‐resistant...
Summary Plant terpene synthase genes ( TPS s ) have roles in diverse biological processes. Here, we report the functional characterization of one member soybean gene family, which was designated Gm AFS . Recombinant produced Escherichia coli catalysed formation a sesquiterpene E,E )‐α‐farnesene. is closely related to )‐α‐farnesene from apple, both phylogenetically and structurally. further investigated for its role defence against nematodes insects. Soybean cyst nematode SCN most important...
Charcoal rot (CR), caused by the fungus Macrophomina phaseolina (Tassi) Goid. is a pervasive disease of economic significance on soybeans (Glycine max (L.) Merr.). Similarly, drought leading cause yield loss in soybean worldwide. In this study, CR severity and seed were determined irrigated non-irrigated environments 2011, 2012, 2013 for thirteen genotypes, nine which previously to be tolerant (DT). The objectives determine putative DT genotypes over-all effect environments. Colony Forming...
Soybean nodulation is a highly controlled process that involves complex gene regulation at both transcriptional and post-transcriptional levels. In the present study, we profiled expression changes, alternative splicing events, DNA methylation patterns during nodule formation, development, senescence. The transcriptome data uncovered key transcription of development included 9669 core genes 7302 stage-specific genes. Alternative analysis total 2323 undergo events in least one developmental...
Abstract Climate extremes pose a global threat to crop security. Conservation agriculture is expected offer substantial climate adaptation benefits. However, synergistic effects of conservation practices on yield during normal versus extreme climates and underlying regulatory mechanisms remain elusive. Here, we analyze 29-years data, cotton (Gossypium hirsutum L.) yield, soil data under 32 management in Tennessee, USA. We find that long-term no-tillage enhanced agroecosystem resilience...
Soybean cyst nematode (SCN) ( Heterodera glycines Ichinohe) is a major pest of soybean [G lycine max (L.) Merr.] in the USA. plant introduction (PI) 404198A one newly identified sources that can provide broad spectrum resistance to SCN. The objective this study was identify quantitative trait loci (QTL) associated with SCN races 1, 2, and 5 PI 404198A. Linkage groups (LGs) G A2 were found be race 1. QTL on LG located Satt309‐Satt688 region, it explained larger proportion total variation...
Summary Computational methods offer great hope but limited accuracy in the prediction of functional cis ‐regulatory elements; improvements are needed to enable synthetic promoter design. We applied an ensemble strategy for de novo soybean cyst nematode ( SCN )‐inducible motif discovery among promoters 18 co‐expressed genes that were selected from six reported microarray studies involving a compatible soybean– interaction. A total 116 overlapping regions OMR s) discovered bioinformatically...
Summary DNA methylation is a widespread epigenetic mark that contributes to transcriptome reprogramming during plant–pathogen interactions. However, the distinct role of in establishing resistant and susceptible responses remains largely unexplored. Here, we developed used pair near‐isogenic lines (NILs) characterize methylome landscapes soybean roots interactions with cyst nematode (SCN; Heterodera glycines ). We also compared methylomes NILs their parents identify introduced stably...
Soybean cyst nematode (SCN, Heterodera glycines Ichinohe) is a serious pest of soybean [Glycine max (L.) Merr.] in the USA and worldwide. A current classification system has designated 16 different races SCN populations. In Southern USA, Races 1 2 are becoming more prevalent. It important to identify accessions with resistance these races. The objective this study was bioassay 32 plant introductions (PIs) for together standard host differentials susceptible control. bioassays were performed...
Soybean cyst nematode (SCN) ( Heterodera glycines Ichinohe) is one of the most destructive soybean [ Glycine max (L.) Merr.] pests worldwide. The common source SCN resistance used in breeding northern USA PI 88788. Previous research has shown that 88788 carries a major quantitative trait locus (QTL) conferring on linkage group (LG) G, which believed to be rhg1 objective our was map and confirm additional QTL Bell, cultivar with from One hundred four F 4 –derived lines (F population)...
Breeding soybean [ Glycine max (L.) Merr.] cultivars for resistance to cyst nematode (SCN) Heterodera glycines Ichinohe] is the most efficient means control this pest. Evaluating and developing new germplasm sources breeding very important prevent SCN from race shifts provide durable in soybean. We evaluated a newly found germplasm, plant introduction (PI) 89772, which resistant Races 1, 2, 3, 5, moderately Race 14. The objectives were identify molecular markers associated with resistance,...