Triticum aestivum (bread wheat) is a major global cereal grain essential to human nutrition. Wheat was one of the first cereals to be domesticated, originating in the fertile crescent around 7000 years ago. Bread wheat is hexaploid, with a genome size estimated at ~17 Gbp, composed of three closely-related and independently maintained genomes that are the result of a series of naturally occurring hybridization events. The ancestral progenitor genomes are considered to be Triticum urartu (the A-genome donor) and an unknown grass thought to be related to Aegilops speltoides (the B-genome donor). This first hybridization event produced tetraploid emmer wheat (AABB, T. dicoccoides) which hybridized again with Aegilops tauschii (the D-genome donor) to produce modern bread wheat.
What can I find? Homologues, gene trees, and whole genome alignments across multiple species.
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Wheat sequence search v2.0 online
Full sequence-based searching of the wheat genome is now available within the standard Ensembl Genomes sequence search facilities (ENA search and BLAST). The previous custom wheat-only search has now been discontinued.
- International Wheat Genome Sequencing Consortium (IWGSC)
- URGI Wheat Portal
- GDEC Portal
- PGSB International Wheat Survey Genome Database
- PGSB 5x 454 Survey Wheat Genome Database
- Triticeae Genomics For Sustainable Agriculture resource page
- Triticeae-CAP in UC Davis University
- Triticum monococcum resources from Jaiswal Lab in Oregon State University
- TREP, the Triticeae Repeat Sequence Database
- TriFLDB, the triticeae full-length CDS database
- ENA study ERP000319: 454 pyrosequencing of the Triticum aestivum (bread wheat) genome to 5X coverage
- ENA study ERP001415: 454 sequencing of Triticum aestivum (bread wheat) cv. Chinese spring cDNA samples from a pool of tissues, from plants under drought stress and from circadian-sampled leaves
- ENA study ERP004505: Analysis of the bread wheat grain transcriptome reveals complex genome interplay in a hexaploid cereal
- Triticum aestivum ESTs at ENA
- Triticum aestivum Unigene cluster sequences at NCBI
- CerealsDB from the Functional Genomics Group at the University of Bristol
- Wheat Hapmap project