A chromosome-based draft sequence of the hexaploid bread wheat ( <i>Triticum aestivum</i> ) genome
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- Teacher spread
- 0.201 · how far apart the two teachers sit on this one work
- Validation status
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Abstract
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 the homeologous chromosomes and subgenomes. Comparative gene analysis of wheat subgenomes and extant diploid and tetraploid wheat relatives showed that high sequence similarity and structural conservation are retained, with limited gene loss, after polyploidization. However, across the genomes there was evidence of dynamic gene gain, loss, and duplication since the divergence of the wheat lineages. A high degree of transcriptional autonomy and no global dominance was found for the subgenomes. These insights into the genome biology of a polyploid crop provide a springboard for faster gene isolation, rapid genetic marker development, and precise breeding to meet the needs of increasing food demand worldwide.
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The record
- Venue
- Science
- Topic
- Wheat and Barley Genetics and Pathology
- Field
- Agricultural and Biological Sciences
- Canadian institutions
- University of Saskatchewan
- Funders
- Bayer CropScienceNorges ForskningsrådAgence Nationale de la RechercheTürkiye Bilimsel ve Teknolojik Araştırma KurumuFrance AgriMerBundesministerium für Bildung und ForschungMinistry of Agriculture, Forestry and FisheriesOffice of ScienceGrains Research and Development CorporationInternational Center for Agricultural Research in the Dry AreasKansas Wheat CommissionEuropean Molecular Biology LaboratoryGenome PrairieBiotechnology and Biological Sciences Research CouncilInstitut National de la Recherche AgronomiqueArcadia FundRural and Environment Science and Analytical Services DivisionDeutsche ForschungsgemeinschaftMinistry of Agriculture - SaskatchewanGenome CanadaDirectorate for Biological SciencesJoint Genome InstituteGrantová Agentura České RepublikyWestern Grains Research FoundationU.S. Department of AgricultureEuropean CommissionU.S. Department of Energy
- Keywords
- BiologyPolyploidGenomeGenePloidyGeneticsChromosomeCommon wheatWhole genome sequencingGenome evolution
- Has abstract in OpenAlex
- yes