A5047366274- Soybean genetics and cultivation
- Legume Nitrogen Fixing Symbiosis
- Nematode management and characterization studies
- Plant pathogens and resistance mechanisms
- Insect-Plant Interactions and Control
- Plant Pathogens and Resistance
- Agronomic Practices and Intercropping Systems
- Agricultural pest management studies
- Plant Virus Research Studies
- Genetic Mapping and Diversity in Plants and Animals
- Yeasts and Rust Fungi Studies
- Remote Sensing in Agriculture
- Plant Pathogens and Fungal Diseases
- Plant Disease Management Techniques
- Plant Disease Resistance and Genetics
- Smart Agriculture and AI
- Insect and Pesticide Research
- Plant-Microbe Interactions and Immunity
- Weed Control and Herbicide Applications
- Plant Parasitism and Resistance
- Genetics and Plant Breeding
- Plant and animal studies
- Genomics and Phylogenetic Studies
- Turfgrass Adaptation and Management
- Plant responses to elevated CO2
University of Illinois Urbana-Champaign
2016-2025
Iowa State University
2011-2020
Goodwin College
2013-2017
Urbana University
2004-2014
University of Illinois System
2008-2013
Agricultural Research Service
2011
United States Department of Agriculture
2011
National Center for Genome Resources
2011
University of Minnesota
2011
University of California, Los Angeles
2011
Next generation sequencing is transforming our understanding of transcriptomes. It can determine the expression level transcripts with a dynamic range over six orders magnitude from multiple tissues, developmental stages or conditions. Patterns gene provide insight into functions genes unknown annotation. The RNA Seq-Atlas presented here provides record high-resolution in set fourteen diverse tissues. Hierarchical clustering transcriptional profiles for these tissues suggests three clades...
The rhg1-b allele of soybean is widely used for resistance against cyst nematode (SCN), the most economically damaging pathogen soybeans in United States. Gene silencing showed that genes a 31-kilobase segment at rhg1-b, encoding an amino acid transporter, α-SNAP protein, and WI12 (wound-inducible domain) each contribute to resistance. There one copy per haploid genome susceptible varieties, but 10 tandem copies are present haplotype. Overexpression individual roots was ineffective,...
Soybean (Glycine max Merr.) is the world’s most widely grown leguminous crop and an important source of protein oil for food feed. yields have increased substantially throughout past century, with yield gains attributed to genetic advances improved cultivars as well in farming technology practice. Yet, physiological mechanisms underlying historical improvements soybean not been studied rigorously. In this 2-year experiment, 24 released between 1923 2007 were field trials. Physiological...
Cytosine DNA methylation is one avenue for passing information through cell divisions. Here, we present epigenomic analyses of soybean recombinant inbred lines (RILs) and their parents. Identification differentially methylated regions (DMRs) revealed that DMRs mostly cosegregated with the genotype from which they were derived, but examples uncoupling epigenotype identified. Linkage mapping states assessed whole-genome bisulfite sequencing 83 RILs uncovered widespread evidence local...
ABSTRACT Soybean improvement via plant breeding has been critical for the success of crop. The objective this study was to quantify genetic change in yield and other traits that occurred during past 80 yr North American soybean Maturity Groups (MGs) II, III, IV. Historic sets 60 MG 59 49 IV cultivars, released from 1923 2008, were evaluated field trials conducted 17 U.S. states one Canadian province 2010 2011. Averaged over 27 II 26 III site‐years data, estimated rates 23 kg ha –1 MGs 20...
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...
Increases in the seed protein concentration of soybean [ Glycine max (L.) Merr.] would improve value crop. Two major quantitative trait locus (QTL) alleles from soja Sieb. and Zucc. that increased were identified previously. The first objective our study was to test two G. QTL a population developed through backcrossing into background. second evaluate effect one three genetic backgrounds. A backcross (BC3) evaluated field across locations over 2 yr. To allele different backgrounds, line...
The soybean aphid [ Aphis glycines Matsumura (Hemiptera: Aphididae)] is an invasive insect pest of Glycine max (L.) Merr.] that was first reported in North America 2000. There are currently no reports biotype diversity and this information needed before resistance genes deployed. objective research to test for variation. response two A. isolates, one collected Ohio the other Illinois, were compared by infesting eight genotypes nonchoice tests. same also tested with isolate using a choice...
Microsatellite DNA markers are widely used in genetic research. Their use, however, can be costly and throughput is sometimes limited. The objective of this paper to introduce a simple, low‐cost, high‐throughput system that detects amplification products from microsatellite by nondenaturing polyacrylamide gel electrophoresis. This capable separating fragments differ as little two base pairs. electrophoresis unit holds vertical 100‐sample gels allowing standards samples 96‐well plate analyzed...
A set of nested association mapping (NAM) families was developed by crossing 40 diverse soybean [ (L.) Merr.] genotypes to the common cultivar. The 41 parents were deeply sequenced for SNP discovery. Based on polymorphism single-nucleotide polymorphisms (SNPs) and other selection criteria, a SNPs selected be included in SoyNAM6K BeadChip genotyping 5600 RILs from families. Analysis profiles showed low average recombination rate. We constructed genetic linkage maps each family composite map...
Abstract Crop biomass production is a function of the efficiencies with which sunlight can be intercepted by canopy and then converted into biomass. Conversion efficiency has been identified as target for improvement to enhance crop yield. Greater conversion in modern soybean [ Glycine max (L.) Merr.] cultivars was documented recent field trials, this study explored physiological basis observation. In replicated trials conducted over three successive years, diurnal leaf gas exchange...
Abstract Soybean is the world’s leading source of vegetable protein and demand for its seed continues to grow. Breeders have successfully increased soybean yield, but genetic architecture yield key agronomic traits poorly understood. We developed a 40-mating nested association mapping (NAM) population 5,600 inbred lines that were characterized by single nucleotide polymorphism (SNP) markers six in field trials 22 environments. Analysis agronomic, SNP data revealed 23 significant marker-trait...
ABSTRACT Planting date is a commonly manipulated management practice in soybean [ Glycine max (L.) Merr.] production; however, the impacts of past and ongoing agronomic improvements, such as earlier planting, on genetic yield improvement associated changes seed protein oil have not been evaluated. The objectives this study were to determine if 30‐d difference planting affected measured rates (i) yield, (ii) mass, (iii) midwestern United States. Research was conducted at Arlington, WI,...
Soybean [ Glycine max (L.) Merr.] yield has increased during the past century; however, little is understood about morphological parameters that have contributed most to gain. We conducted field studies determine relationships between genetic gain of soybean and seeding rate. The hypothesis was newer cultivars would express higher than older when grown in plant populations. A total 116 equally representing Maturity Groups (MGs) II III released over last 80 yr were evaluated at high low rates...
Soybean [Glycine max (L.) Merr.] is a unique crop species because it has high levels of both protein and oil in its seed. Of the many quantitative trait loci (QTL) controlling soybean seed content, alleles cqSeed protein-003 QTL on chromosome 20 exert greatest additive effect. The high-protein allele exists cultivated wild (Glycine soja Siebold & Zucc.) germplasm. Our objective was to fine map this enable positional-based cloning underlying causative gene(s). Fine mapping achieved by...
Soybean [ Glycine max (L.) Merr.] is primarily grown as a source of protein and oil. A quantitative trait locus (QTL) controlling seed concentration was previously mapped to linkage group (LG) I soybean. The objectives this study were fine map the QTL determine if additional recombination could reduce inverse phenotypic relationship between yield oil concentration. mapping done with two sets backcross populations that tested in field genetic markers. These developed by introgression high...
ABSTRACT Soybean [ Glycine max (L.) Merrill] plant introductions (PIs) are potential sources of useful genes for breeding. We mapped quantitative trait loci (QTL) yield and other agronomic traits, determined QTL × environment (QTL E) epistatic interactions in three backcross (BC) populations. The populations were developed using PIs as donor parents ‘Beeson 80’, ‘Kenwood’, ‘Lawrence’ recurrent (RP). Sixty‐eight BC 2 F 5 ‐derived lines the Beeson 80 population, 74 1 Kenwood 94 3 Lawrence...
The nutritional and economic value of many crops is effectively a function seed protein oil content. Insight into the genetic molecular control mechanisms involved in deposition these constituents developing needed to guide crop improvement. A quantitative trait locus (QTL) on Linkage Group I (LG I) soybean (Glycine max (L.) Merrill) has striking effect content.A near-isogenic line (NIL) pair contrasting differing an introgressed genomic segment containing LG QTL was used as resource...
Soybean rust, caused by Phakopsora pachyrhizi (H. Sydow & Sydow), is a destructive soybean [ Glycine max (L.) Merr.] disease and identification of new resistance genes essential for effective rust management. Our research objectives were to map confirm the location gene(s) in PI 594538A using population 98 F 3:4 lines from cross between PI594538A (reddish‐brown [RB] lesions) susceptible cultivar Loda (tan [TAN] lesions). The inoculated with P. isolate ZM01‐1 Zimbabwe. RB mapped on...
Soybean cyst nematode (Heterodera glycines, SCN) is the most economically damaging pathogen of soybean (Glycine max) in U.S. The Rhg1 locus repeatedly observed as quantitative trait with greatest impact on SCN resistance. Glyma18g02680.1 gene at that encodes an apparent leucine-rich repeat transmembrane receptor-kinase (LRR-kinase) has been proposed to be resistance gene, but its function not confirmed. Generation fertile transgenic lines difficult methods have published test roots generated...
Genetic improvement toward optimized and stable agronomic performance of soybean genotypes is desirable for food security. Understanding how perform in different environmental conditions helps breeders develop sustainable cultivars adapted to target regions. Complex traits importance are known be controlled by a large number genomic regions with small effects whose magnitude direction modulated factors. Knowledge the constraints undesirable resulting from genotype interactions key objective...