A5037252226- Genetic Mapping and Diversity in Plants and Animals
- Genetics and Plant Breeding
- Plant Disease Resistance and Genetics
- Genetic and phenotypic traits in livestock
- Wheat and Barley Genetics and Pathology
- Plant Pathogenic Bacteria Studies
- Genetic diversity and population structure
- Chromosomal and Genetic Variations
- Plant-Microbe Interactions and Immunity
- Photosynthetic Processes and Mechanisms
- Plant Virus Research Studies
- Plant pathogens and resistance mechanisms
- Plant Micronutrient Interactions and Effects
- Legume Nitrogen Fixing Symbiosis
- Plant Genetic and Mutation Studies
- Fungal and yeast genetics research
- CRISPR and Genetic Engineering
- Plant Gene Expression Analysis
- Plant Stress Responses and Tolerance
- Plant Reproductive Biology
Corteva (United States)
2019-2024
Wilmington University
2016
DuPont (United States)
2016
Pioneer Hi-Bred
2005-2015
Fukui Prefectural University
2002
National Center for Genome Resources
2002
University of Wisconsin–Madison
2002
Maize breeding germplasm used in Southwest China has high complexity because of the diverse ecological features this area. In study, population structure, genetic diversity, and linkage disequilibrium decay distance 362 important inbred lines collected from program were characterized using MaizeSNP50 BeadChip with 56,110 single nucleotide polymorphisms (SNPs). With respect to two (Tropical Temperate), three (Tropical, Stiff Stalk non-Stiff Stalk), four [Tropical, group A derived modern U.S....
Microsatellites are important tools for plant breeding, genetics, and evolution, but few studies have analyzed their mutation pattern in plants. In this study, we estimated the rate 142 microsatellite loci maize (Zea mays subsp. mays) two different experiments of accumulation. The per generation was to be 7.7 × 10−4 microsatellites with dinucleotide repeat motifs, a 95% confidence interval from 5.2 1.1 10−3. For motifs more than 2 bp length, no mutations were detected; so could only estimate...
How domestication bottlenecks and artificial selection shaped the amount distribution of genetic variation in genomes modern crops is poorly understood. We analyzed diversity at 462 simple sequence repeats (SSRs) or microsatellites spread throughout maize genome compared observed these SSRs to that its wild progenitor, teosinte. The results reveal a modest genome-wide deficit relative less for with dinucleotide repeat motifs than more two nucleotides, suggesting former their higher mutation...
tassel-less1 (tls1) is a classical maize (Zea mays) inflorescence mutant. Homozygous mutant plants have no tassels or very small tassels, and ear development also impaired. Using positional cloning approach, ZmNIP3;1 (a NOD26-like intrinsic protein) was identified as the candidate gene for tls1. The completely deleted in tls1 genome. Two Mutator-insertional TUSC alleles of exhibited tls1-like phenotypes, allelism tests confirmed that encodes ZmNIP3;1. Transgenic with an RNA interference...
Summary Type C cytoplasmic male sterility ( CMS ‐C) is the most commonly used form of in maize hybrid seed production. Restorer fertility 4 Rf4 ), major restorer gene ‐C, located on chromosome 8S. To positionally clone , a large F3 population derived from cross between non‐restorer and n = 5104) was screened for recombinants then phenotyped tassel fertility, resulting final map‐based cloning interval 12 kb. Within this 12‐kb interval, only likely candidate GRMZM 2G021276, basic...
Gene-background interaction is a commonly observed phenomenon in many species, but the molecular mechanisms of such an less well understood. Here we report cloning maize mutant gene and its modifier. A recessive with virescent yellow-like (vyl) phenotype was identified ethyl methanesulfonate-mutagenized population derived from inbred line B73. Homozygous plants exhibited yellow leaf after emergence gradually recovered became indistinguishable wild-type approximately 2 weeks. Taking...
Maize (Zea mays L.) C-type cytoplasmic male sterility (CMS-C) is a highly used CMS system for maize commercial hybrid seed production. Rf4 the major dominant restorer gene CMS-C. Inbreds were recently discovered which contain restoring allele yet are unable to restore fertility due lack of an additional required Rf4's restoration. To find this gene, QTL mapping and positional cloning performed using inbred that contained but was incapable The mapped 738-kb interval on chromosome 2, contains...
Southern corn rust (SCR), which is caused by the fungal pathogen Puccinia polysora Underw, a prevalent foliar disease in maize. Breeding for resistant cultivars desirable way efficient control of this disease. To identify quantitative trait loci (QTL) conferring resistance to SCR, recombinant inbred population including 138 lines (RILs) derived from SCR-resistant line CML496 and susceptible Lx9801 was evaluated phenotypic reaction SCR three trials two locations over 2 years. The genotyped...
Northern corn leaf blight, caused by the fungal pathogen Exserohilum turcicum, is a major disease of maize. The first locus conferring resistance to E. turcicum race 0, Ht1, was identified over 50 years ago, but underlying gene has remained unknown. We employed map-based cloning strategy identify Ht1 causal gene, which found be coiled-coil nucleotide-binding, leucine-rich repeat (NLR) we named PH4GP-Ht1. Transgenic testing confirmed that introducing native PH4GP-Ht1 sequence susceptible...
Head smut, caused by the fungus Sphacelotheca reiliana (Kühn) Clint, is a devastating threat to maize production. In this study, QTL mapping of head smut resistance was performed using recombinant inbred line (RIL) population from cross between resistant "QI319" and susceptible "Huangzaosi" (HZS) with genetic map constructed genotyping-by-sequencing (GBS) data composed 1638 bin markers. Two were identified, located on Chromosome 2 (q2.09HR) 5 (q5.03HR), q2.09HR co-localized previously...
Summary Southern corn leaf blight (SLB), caused by the necrotrophic pathogen Cochliobolus heterostrophus , is one of maize foliar diseases and poses a great threat to production around world. Identification genetic variations underlying resistance SLB paramount importance yield quality. Here, we used random‐open‐parent association mapping population containing eight recombinant inbred line populations panel consisting 513 diversity lines with high‐density markers dissect basis resistance....
Southern corn rust (SCR) is a prevalent foliar disease that can lead to severe yield losses in maize. Growing SCR-resistant varieties the most effective way control disease. To identify major quantitative trait loci (QTLs) for SCR resistance, recombinant inbred line population derived from cross between CIMBL83 (resistant) and Lx9801 (susceptible) was analyzed. The resistance had high heritability within population, QTL on chromosome 4 (qSCR4.01), which explain 48 65% of total phenotypic...
Goss's wilt, caused by the Gram-positive actinobacterium Clavibacter nebraskensis, is an important bacterial disease of maize. The molecular and genetic mechanisms resistance to bacterium, or, in general, bacteria causing plant diseases, remain poorly understood. Here, we examined basis wilt through differential gene expression, standard genome-wide association mapping (GWAS), extreme phenotype (XP) GWAS using highly resistant (R) susceptible (S) lines, quantitative trait locus (QTL) 3...