A5106224917- Wheat and Barley Genetics and Pathology
- Genetic Mapping and Diversity in Plants and Animals
- Genetics and Plant Breeding
- Plant Disease Resistance and Genetics
- Crop Yield and Soil Fertility
- Plant Pathogens and Resistance
- Agriculture, Plant Science, Crop Management
- Rice Cultivation and Yield Improvement
- Heat shock proteins research
- Food composition and properties
- Leaf Properties and Growth Measurement
- Genetic and phenotypic traits in livestock
- Seed Germination and Physiology
- Plant Pathogens and Fungal Diseases
- Powdery Mildew Fungal Diseases
- Plant Stress Responses and Tolerance
- Genetic and Environmental Crop Studies
- thermodynamics and calorimetric analyses
- Health Policy Implementation Science
- Bee Products Chemical Analysis
- Public Health Policies and Education
- Chromosomal and Genetic Variations
- Plant nutrient uptake and metabolism
- Bioenergy crop production and management
- Nutritional Studies and Diet
Aberystwyth University
2014-2024
Institute of Biological, Environmental and Rural Sciences
2014-2024
National Collaborating Centre for Methods and Tools
2020
Yale University
2020
Stanford University
2011
Broad Institute
2011
University of Maryland, Baltimore
2011
International Crops Research Institute for the Semi-Arid Tropics
2002
ICON Technology & Process Consulting (United Kingdom)
2002
International Crops Research Institute for the Semi-Arid Tropics
1993
SUMMARY In this review, changes in plant gene expression response to environmental stresses are discussed using the examples of high and low temperature treatments. While some may contribute acclimatory processes which improve survival or performance under stress, others be ‘shock’ responses indicative sensitivity. The heat‐shock response, is almost ubiquitous among eukaryotic organisms, characterized by repression normal cellular protein synthesis mediated at both transcriptional...
The Aspergillus Genome Database (AspGD; http://www.aspgd.org) is a freely available, web-based resource for researchers studying fungi of the genus Aspergillus, which includes organisms clinical, agricultural and industrial importance. AspGD curators have now completed comprehensive review entire published literature about nidulans fumigatus, this annotation provided with streamlined, ortholog-based navigation multispecies information. facilitates comparative genomics by providing...
Genomic discovery in oat and its application to improvement have been hindered by a lack of genetic markers common different maps, the difficulty conducting whole-genome analysis using high-throughput markers. This study was intended develop, characterize, apply large set based on Diversity Array Technology (DArT).Approximately 19,000 genomic clones were isolated from complexity-reduced representations pooled DNA samples 60 varieties global origin. These screened three arrays, with more than...
In a de novo genotyping-by-sequencing (GBS) analysis of short, 64-base tag-level haplotypes in 4657 accessions cultivated oat, we discovered 164741 (TL) genetic variants containing 241224 SNPs. From this, the marker density an oat consensus map was increased by addition more than 70000 loci. The mapped TL genotypes 635-line diversity panel were used to infer chromosome-level (CL) haplotype maps. These maps revealed differences number and size blocks, as well between chromosomes subsets...
Hexaploid oat ( Avena sativa L., 2 n = 6 x 42) is a member of the Poaceae family and has large genome (∼12.5 Gb) containing 21 chromosome pairs from three ancestral genomes. Physical rearrangements among parental genomes have hindered development linkage maps in this species. The objective work was to develop single high‐density consensus map that representative majority commonly grown varieties. Data cDNA‐derived single‐nucleotide polymorphism (SNP) array genotyping‐by‐sequencing (GBS) were...
Pearl millet marker-assisted selection (MAS) programs targeting adaptation to variable postflowering moisture environments would benefit from quantitative trait loci (QTLs) that improve grain yield across the full range of conditions, rather than just in drought-stressed environments. This research was undertaken identify such QTLs an extensive (12-environment) phenotyping data set included both stressed and unstressed Genetic materials were test crosses 79 F2–derived F4 progenies a mapping...
A physically anchored consensus map is foundational to modern genomics research; however, construction of such a in oat (Avena sativa L., 2n = 6x 42) has been hindered by the size and complexity genome, scarcity robust molecular markers, lack aneuploid stocks. Resources developed this study include modified SNP discovery method for complex genomes, diverse set novel chromosome-deficient anchoring strategy. These resources were applied build first complete, physically-anchored hexaploid oat....
Six hundred thirty five oat ( Avena sativa L.) lines and 4561 single‐nucleotide polymorphism (SNP) loci were used to evaluate population structure, linkage disequilibrium (LD), genotype–phenotype association with heading date. The first principal components (PCs) accounted for 25.3% of genetic variation. Neither the eigenvalues 25 PCs nor cross‐validation errors from K = 1 20 model‐based analyses suggested a structured population. However, PC 2 supported clustering on spring vs. southern...
Genome analysis of 27 oat species identifies ancestral groups, delineates the D genome, and origin 21 mapped chromosomes in hexaploid oat. We investigated genomic relationships among genus Avena using high-density genetic markers revealed by genotyping-by-sequencing (GBS). Two methods GBS were used: one based on tag-level haplotypes that previously cultivated (A. sativa), intended to sample enumerate originating from all under investigation. Qualitatively, both gave similar predictions...
Abstract. Climatic change as a result of the greenhouse effect is widely predicted to increase mean temperatures globally and, in turn, frequency with which plants are exposed heat shock conditions, particularly semi‐arid tropics. The consequences extreme high‐temperature treatments on have been considered, relation synthesis proteins (HSPs) and capacity acquire thermotolerance. response described using results obtained seedlings tropical cereals, sorghum ( Sorghum bicolor ) pearl millet...
Diseases caused by crown rust (Puccinia coronata f. sp. avenae) and powdery mildew (Blumeria graminis are among the most important constraints for oat crop. Breeding resistance is one of effective, economical, environmentally friendly means to control these diseases. The purpose this work was identify elite alleles in association mapping aid selection resistant plants. To aim, 177 accessions including white red cultivars landraces were evaluated disease further genotyped with 31 simple...
Context Several high-quality reference genomes for oat (Avena sativa L. and relatives) have been published, with the prospect of many additional whole-genome assemblies emerging in near future. Aims This has necessitated an effort by International Oat Nomenclature Committee (IONC; all co-authors on this paper) to devise a universal system naming subgenomes, chromosomes, genes, gene models quantitative trait loci. Methods We evaluated existing practices, recent data from sequencing, newly...
Yield is the most complex trait to improve crop production, and identifying genetic determinants for high yield a major issue in breeding new varieties. In faba bean ( Vicia L.), quantitative loci (QTLs) have previously been detected studies of biparental mapping populations, but genes controlling main components remain largely unknown. this study, we investigated first time control six yield-related traits: shattering (SH), pods per plant (PP), seeds pod (SP), (SPL), 100-seed weight (HSW),...
Abstract Genetic diversity among 70 maintainers and two pollinators of sub‐Saharan Indian origin was studied for simple sequence repeat (SSR) loci using 34 primer pairs. A total 213 alleles were detected with an average 6.26 per locus. Polymorphic information content (PIC) ranged from 0.05 to 0.96 a mean 0.58 the SSR loci. Mean PIC across linkage groups number in dinucleotide motifs varied significantly. The lowest (0.239) group 6 indicated comparatively conserved nature this group....
The extent to which the quality and yield of plant varieties are influenced by environment is important for their successful uptake end users particularly as climatic fluctuations resulting in environments that highly variable from one growing season another. genotype-by-environment interaction (GEI) milling was studied using four winter oat multi-locational trials over 4 years U.K. Significant differences across 22 were found between physical grain composition well yield, with having a...
Summary A field technique to screen pearl millet genotypes for their emergence and survival at high soil surface temperatures is described. Genetic variation in seedling shown it argued that this largely due tolerance of rather than moisture deficit, although some interaction occurred. An index ‘thermotolerance’ defined are ranked accordingly trait, which be highly heritable. The repeatable allows a large number screened the same time.
summary In this paper, the response to temperature of three physiological processes has been examined in detail seedlings sorghum and pearl millet. These have compared with their field performance under high conditions aim developing laboratory‐based screening techniques for seedling thermotolerance. Membrane thermostability, as assessed by electrolyte leakage, re‐growth protein synthetic ability were measured exposed a range temperatures using thermal gradient bar. The effect genotype, age...
Oats (Avena sativa L.) are a healthy food, being high in dietary fibre (e.g. β-glucans), antioxidants, minerals, and vitamins. Understanding the effect of variety crop management on nutritional quality is important. The response four oat varieties to increased nitrogen levels was investigated across multiple locations years with respect yield, grain metabolites (assessed via GC- LC- MS). A novel high-resolution UHPLC-PDA-MS/MS method developed, providing improved metabolite enrichment,...