Pierre Sourdille
A5073595428- Wheat and Barley Genetics and Pathology
- Genetic Mapping and Diversity in Plants and Animals
- Plant Disease Resistance and Genetics
- Genetics and Plant Breeding
- Chromosomal and Genetic Variations
- Crop Yield and Soil Fertility
- Plant Genetic and Mutation Studies
- Plant tissue culture and regeneration
- Genetics, Bioinformatics, and Biomedical Research
- Plant Pathogens and Resistance
- Genomics and Phylogenetic Studies
- Mycotoxins in Agriculture and Food
- Plant pathogens and resistance mechanisms
- Plant nutrient uptake and metabolism
- Plant Reproductive Biology
- Horticultural and Viticultural Research
- Agriculture, Plant Science, Crop Management
- DNA Repair Mechanisms
- Food composition and properties
- Genetic diversity and population structure
- Plant Virus Research Studies
- Insect and Pesticide Research
- Plant Gene Expression Analysis
- Legume Nitrogen Fixing Symbiosis
- Genetic and Environmental Crop Studies
Génétique, Diversité, Écophysiologie des Céréales
2016-2025
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2016-2025
Université Clermont Auvergne
2006-2023
The University of Adelaide
2019
Institut National de la Recherche Agronomique
2003-2014
Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes
2014
Centre de Recherche en Nutrition Humaine d'Auvergne
2014
Institut Pascal
2014
University of Haifa
2008
North Dakota State University
2008
Insights from the annotated wheat genome Wheat is one of major sources food for much world. However, because bread wheat's a large hybrid mix three separate subgenomes, it has been difficult to produce high-quality reference sequence. Using recent advances in sequencing, International Genome Sequencing Consortium presents an with detailed analysis gene content among subgenomes and structural organization all chromosomes. Examples quantitative trait mapping CRISPR-based modification show...
An ordered draft sequence of the 17-gigabase hexaploid bread wheat (Triticum aestivum) genome has been produced by sequencing isolated chromosome arms. We have annotated 124,201 gene loci distributed nearly evenly across homeologous chromosomes and subgenomes. Comparative analysis subgenomes extant diploid tetraploid relatives showed that high similarity structural conservation are retained, with limited loss, after polyploidization. However, genomes there was evidence dynamic gain,...
The allohexaploid bread wheat genome consists of three closely related subgenomes (A, B, and D), but a clear understanding their phylogenetic history has been lacking. We used assemblies five diploid relatives to analyze genome-wide samples gene trees, as well estimate evolutionary relatedness divergence times. show that the A B genomes diverged from common ancestor ~7 million years ago these gave rise D through homoploid hybrid speciation 1 2 later. Our findings imply present-day is product...
We produced a reference sequence of the 1-gigabase chromosome 3B hexaploid bread wheat. By sequencing 8452 bacterial artificial chromosomes in pools, we assembled 774 megabases carrying 5326 protein-coding genes, 1938 pseudogenes, and 85% transposable elements. The distribution structural functional features along revealed partitioning correlated with meiotic recombination. Comparative analyses indicated high wheat-specific inter- intrachromosomal gene duplication activities that are...
As the staple food for 35% of world's population, wheat is one most important crop species. To date, sequence-based tools to accelerate improvement are lacking. part international effort sequence 17-billion-base-pair hexaploid bread genome (2n = 6x 42 chromosomes), we constructed a bacterial artificial chromosome (BAC)-based integrated physical map largest chromosome, 3B, that alone 995 megabases. A chromosome-specific BAC library was used assemble 82% into 1036 contigs were anchored with...
The Hardness (Ha) locus controls grain hardness in hexaploid wheat (Triticum aestivum) and its relatives Aegilops species) represents a classical example of trait whose variation arose from gene loss after polyploidization. In this study, we investigated the molecular basis evolutionary events observed at by comparing corresponding sequences diploid, tertraploid, species Aegilops). Genomic rearrangements, such as transposable element insertions, genomic deletions, duplications, inversions,...
Allohexaploid bread wheat ( Triticum aestivum L.) provides approximately 20% of calories consumed by humans. Lack genome sequence for the three homeologous and highly similar genomes (A, B, D) has impeded expression analysis grain transcriptome. We used previously unknown information to analyze cell type–specific genes in developing identified distinct co-expression clusters reflecting spatiotemporal progression during endosperm development. observed no global but type– stage-dependent...
Because of their abundance and amenability to high-throughput genotyping techniques, Single Nucleotide Polymorphisms (SNPs) are powerful tools for efficient genetics genomics studies, including characterization genetic resources, genome-wide association studies genomic selection. In wheat, most the previous SNP discovery initiatives targeted coding fraction, leaving almost 98% wheat genome largely unexploited. Here we report on use whole-genome resequencing data from eight lines mine SNPs in...
Summary Bread wheat ( Triticum aestivum ) is one of the most important crops worldwide. However, because its large, hexaploid, highly repetitive genome it a challenge to develop efficient means for molecular analysis and genetic improvement in wheat. To better understand composition evolution hexaploid homoeologous genomes evaluate potential BAC‐end sequences (BES) marker development, we have followed chromosome‐specific strategy generated 11 Mb random BES from chromosome 3B, largest bread...
In wheat (Triticum aestivum L.), the crossover (CO) frequency increases gradually from centromeres to telomeres. However, little is known about factors affecting both distribution and intensity of recombination along this gradient. To investigate this, we studied in detail pattern CO chromosome 3B bread wheat. A dense reference genetic map comprising 102 markers homogeneously distributed was compared a physical deletion map. Most COs (90%) occurred distal subtelomeric regions that represent...
Summary Recombination affects the fate of alleles in populations by imposing constraints on reshuffling genetic information. Understanding basis these is critical for manipulating recombination process to improve resolution mapping, and reducing negative effects linkage drag deleterious load breeding. Using sequence‐based genotyping a wheat nested association mapping ( NAM ) population 2,100 recombinant inbred lines created crossing 29 diverse lines, we mapped QTL affecting distribution...
Meiotic recombination is a critical process for plant breeding, as it creates novel allele combinations that can be exploited crop improvement. In wheat, complex allohexaploid has diploid-like behaviour, meiotic between homoeologous or alien chromosomes suppressed through the action of several loci. Here, we report positional cloning Pairing 2 (Ph2) and functional validation wheat DNA mismatch repair protein MSH7-3D key inhibitor recombination, thus solving half-century-old question. Similar...