A5005276071- Soybean genetics and cultivation
- Legume Nitrogen Fixing Symbiosis
- Nematode management and characterization studies
- Plant pathogens and resistance mechanisms
- Seed Germination and Physiology
- Agronomic Practices and Intercropping Systems
- Yeasts and Rust Fungi Studies
- Plant Pathogenic Bacteria Studies
- Plant Disease Management Techniques
- Plant Pathogens and Fungal Diseases
- Plant Pathogens and Resistance
- Plant Micronutrient Interactions and Effects
- Plant Genetic and Mutation Studies
- Cassava research and cyanide
- Plant Disease Resistance and Genetics
- Plant Parasitism and Resistance
- Synthetic Organic Chemistry Methods
- Geophysics and Gravity Measurements
- Carbohydrate Chemistry and Synthesis
- Genetic Mapping and Diversity in Plants and Animals
- Mycorrhizal Fungi and Plant Interactions
- Planetary Science and Exploration
- Lipid metabolism and biosynthesis
- Biological Control of Invasive Species
- Peanut Plant Research Studies
Agricultural Research Service
2016-2025
United States Department of Agriculture
2014-2024
University of Bristol
2016-2023
Charles River Laboratories (United Kingdom)
2023
Experimental Station
2015-2020
ETH Zurich
2018
Kennedy Space Center
2013
University of Puerto Rico System
2010
University of Puerto Rico-Mayaguez
1999-2010
New York State Department of Agriculture and Markets
2010
ABSTRACT Few resistance loci to soybean rust (SBR), caused by Phakopsora pachyrhizi Syd., have been genetically mapped and linked molecular markers that can be used for marker assisted selection. New technologies are available single nucleotide polymorphism (SNP) genotyping rapidly map traits controlled such as SBR. Our objective was demonstrate the high‐throughput SNP method known GoldenGate assay perform bulked segregant analysis (BSA) find candidate regions facilitate efficient mapping of...
We report the first enantioselective Rh-catalyzed Markovnikov hydroboration of unactivated terminal alkenes. Using a novel sp2–sp3 hybridized diboron reagent and water as proton source, broad range alkenes undergo to provide secondary boronic esters with high regio- enantiocontrol.
Charcoal rot [ Macrophomina phaseolina (Tassi) Goid] of soybean Glycine max (L.) Merr.] is a disease economic significance throughout the world. Progress in developing resistant genotypes has been hampered because lack reliable and efficient methods for assessment genotypes. Researchers need common system classifying their reaction to M. that consistent across environments. We propose classification based on colony‐forming unit index (CFUI), derived by dividing (CFU) value given genotype CFU...
The effect of maturity (time to maturity) on seed composition in soybean [ Glycine max (L.) Merr.] genotypes is not well understood because generally confounded with genotypic background. Therefore, the effects were estimated two sets near isogenic lines (‘Clark’ and ‘Harosoy’), where each line within a set varied, but all had common There was positive linear relationship between protein concentration among isolines Clark 2004 ( r 2 = 0.75; P ≤ 0.001) 2005 0.63; 0.001). However, Harosoy...
Heat-induced changes in lipidome and their influence on stress adaptation are not well-defined plants. We investigated if lipid metabolic contribute to differences heat responses a heat-tolerant soybean genotype DS25-1 heat-susceptible DT97-4290. Both genotypes were grown at optimal temperatures (OT; 30/20 °C) for 15 days. Subsequently, half of the plants exposed (38/28 11 days, rest kept OT. Leaf samples collected RNA extractions 9th 11th days stress, respectively. observed decline...
The seasonal progress of charcoal rot (caused by Macrophomina phaseolina) was measured over two growing seasons in four separate experiments: irrigated infested, non-infested, non-irrigated and noninfested. Disease assessed at V5, R1, R3, R5, R6, R7 growth stages based on colony forming units (CFU) M. phaseolina recovered from the lower stem root tissues area under disease curve (AUDPC). population density increased slowly V5 to R6 then rapidly for all genotypes experiments. Yield loss due...
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...
Chlorophyll is a major component of chloroplasts and better understanding the genetic basis chlorophyll in soybean [Glycine max (L.) Merr.] might contribute to improving photosynthetic capacity yield regions with adverse environmental conditions. A collection 332 diverse genotypes were grown 2 years (2009 2010) (eChl_A), b (eChl_B), total (eChl_T) content as well a/b ratio (eChl_R) leaf tissues determined by extraction spectrometric determination. Total was also derived from canopy spectral...
High growth temperatures negatively affect soybean (
Five hundred thirty soybean accessions from maturity groups (MG) III through IX were evaluated for resistance to Phakopsora pachyrhizi in a replicated field trial at Centro Regional de Investigación Agrícola Capitán Miranda, Itapúa, Paraguay during the 2005-06 season. Soybean rust severities of individual ranged 0% (resistant) 30.0% (susceptible). In MG and IV, most resistant PI 506863, 567341, 567351B, with less than 1.2%. V, 181456, 398288, 404134B, 507305, 0.3%. VI, 587886, 587880A,...
Ureides are the N-rich products of N-fixation that transported from soybean nodules to shoot. known accumulate in leaves response water-deficit stress, and this has been used identify genotypes with reduced sensitivity drought. Our objectives research were determine shoot ureide concentrations 374 Maturity Group IV accessions genomic regions associated concentration. The grown at two locations (Columbia, MO, Stuttgart, AR) 2 yr (2009 2010) characterized for concentration beginning flowering...
Nitrogen is a primary plant nutrient that plays major role in achieving maximum economic yield. Insufficient availability most often limits soybean [Glycine max (L.) Merr.] crop growth. Symbiotic N2 fixation highly sensitive to limited water availability, and breeding for reduced sensitivity drought considered an important objective improve yields under drought. The of this study was identify single nucleotide polymorphism (SNP) markers associated with N traits. A collection 373 diverse...
Abstract Tetrahydropyrans are common motifs in natural products and have now been constructed with high stereocontrol through a three‐component allylboration‐Prins reaction sequence. This methodology has applied to concise (13 steps) efficient (14 % overall yield) synthesis of the macrolide (−)‐clavosolide A. The also features an early stage glycosidation introduce xylose moiety lithiation‐borylation attach cyclopropyl‐containing side chain.
Charcoal rot disease, caused by the fungus Macrophomina phaseolina, results in major economic losses soybean production southern USA. M. phaseolina has been proposed to use toxin (-)-botryodiplodin its root infection mechanism create a necrotic zone tissue through which fungal hyphae can readily enter plant. The majority (51.4%) of isolates from plants with charcoal disease produced wide range concentrations culture medium (0.14-6.11 µg/mL), 37.8% traces below limit quantification (0.01 and...
ABSTRACT The objective of this study was to investigate the effects maturity, genotypic background, and maximum temperature 20 d before maturity on soybean [ Glycine max (L.) Merr.] seed mineral concentrations. A field experiment conducted in Stoneville, MS, 2004 2005, using two sets near‐isogenic lines that differed genes. One set isolines derived from cultivar Clark other Harosoy. each line within a varied, but all had common background. For isolines, there were positive correlations ( P...
Re-investigation of the l-proline catalyzed double aldol cascade dimerization succinaldehyde for synthesis a key bicyclic enal intermediate, pertinent in field stereoselective prostaglandin synthesis, is reported. The yield this process has been more than doubled, from 14 % to 29 isolated on multi-gram scale (32 NMR yield), through conducting detailed study reaction solvent, temperature, and concentration, as well catalyst screen. synthetic utility intermediate further demonstrated total Δ12...
Soybean [ Glycine max (L.) Merr.] is an important source of protein and vegetable oil. Genetic improvement soybean seed yield composition are ultimate breeding goals. During the past 80 yr, breeders have selected for high other desired traits to make genetic improvements. To quantify changes yield, stability, agronomic end‐use quality traits, we evaluated 93 cultivars in Maturity Groups (MG) V, VI, VII that were released from 1928 2008. Replicated trials specific each MG set conducted during...
Abstract Damage to mature soybean [ Glycine max (L.) Merr.] seed occurs when seeds are subjected weathering, fungi, and insects under hot humid conditions. Such damage can be exacerbated by delays in harvest. Mature (MSD) causes lost revenue both producers processors, as well lower quality of the seed, protein meal, oil consumers. The release DS1260‐2 (Reg. no. GP‐531, PI 705148) USDA‐ARS is part our effort increase tolerance using traditional plant breeding. Tolerance MSD was derived from...