Aegilops tauschii is a wild plant species that is diploid (2n = 14) with genome size about 4000 Mb. Extensive genetic evidence leads to the conclusion that
Triticum aestivum is the product of hybridization between
Triticum turgidum (AABB) and
Ae. tauschii (DD) [Kihara H (1944) Agric Hort 19:13-14 and McFadden ES and Sears
More...ER (1946) J Hered 37:81-89,107-116]. Ae. tauschii is composed of four morphological varieties, three of which are grouped into subsp. tauschii and thefourth is subsp. strangulata. Ae. tauschii ssp. tauschii is distributed from eastern Turkey to China while Ae. tauschii ssp. strangulata has been found only in two separate regions: southeastern (SE) Caspian Iran and Transcaucasia. The genome relationships between these two subspecies and the D genome of Triticum aestivum has been a long standing scholarly endeavor ( Nishikawa K (1974) In: Fourth Int. Wheat Genetics Symp vol 1, p 851-855; Jaaska V (1978) Theor Appl Genet 53:209-217; Jaaska V (1980) Theor Appl Genet 56:273-284; Nishikawa K (1980) Jpn J Genet 55:325-336; Jaaska V (1981) Plant Syst Evol 137:259-273; Dvorak J et al. (1998) Theor Appl Genet 97:657-670; and Lelley et al ). All support the assertion that the Aegilops tauschii ssp. strangulata is the donor of the D genome of T. aestivum. In order to understand the gene distribution in the wheat D genome, NSF has funded a project to develop the physical maps of all the 7 chromosomes of the D genome of Ae. tauschii. They plan to place large number of gene loci on these maps, integrate the physical maps with the wheat genetic and deletion maps and obtain a detailed picture of distribution of genes in the D-genome. Less...| Sequence data: | genome assemblies: 4; sequence reads: 2 | (See Genome Assembly and Annotation report) | | | Statistics: | median total length (Mb): 4310.35 | | median protein count: 58655 | | median GC%: 46.401 | | NCBI Annotation Release: | 102 |
- Aegilops tauschii genome assembly Aet v5.0 features greater sequence contiguity and improved annotation. Wang L, et al. G3 (Bethesda) 2021 Dec 8
- Sequencing and comparative analyses of Aegilops tauschii chromosome arm 3DS reveal rapid evolution of Triticeae genomes. Xie J, et al. J Genet Genomics 2017 Jan 20
- Hybrid assembly of the large and highly repetitive genome of Aegilops tauschii, a progenitor of bread wheat, with the MaSuRCA mega-reads algorithm. Zimin AV, et al. Genome Res 2017 May
- Genome sequence of the progenitor of the wheat D genome Aegilops tauschii. Luo MC, et al. Nature 2017 Nov 23
- Sequencing of chloroplast genomes from wheat, barley, rye and their relatives provides a detailed insight into the evolution of the Triticeae tribe. Middleton CP, et al. PLoS One 2014
- Ancient hybridizations among the ancestral genomes of bread wheat. Marcussen T, et al. Science 2014 Jul 18
More...
Reference genome:  
Aegilops tauschii subsp. strangulata|
Loc
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Type
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Name
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RefSeq
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INSDC
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Size (Mb)
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GC%
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Protein
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rRNA
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tRNA
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Other RNA
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Gene
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Pseudogene
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|---|
| Chr | 1D | NC_053035.2 | CM008368.2 | 501.97 | 46.4 | 7,246 | 18 | 183 | 2,901 | 7,554 | 723 | | | Chr | 2D | NC_053036.2 | CM008369.2 | 650.46 | 46.5 | 9,564 | - | 150 | 4,080 | 9,776 | 834 | | | Chr | 3D | NC_053037.2 | CM008370.2 | 627.46 | 46.5 | 9,048 | 1 | 228 | 3,443 | 9,220 | 728 | | | Chr | 4D | NC_053038.2 | CM008371.2 | 525.21 | 46.7 | 6,613 | 4 | 116 | 2,745 | 6,589 | 471 | | | Chr | 5D | NC_053039.2 | CM008372.2 | 576.24 | 46.5 | 8,990 | 32 | 167 | 3,633 | 9,253 | 677 | | | Chr | 6D | NC_053040.2 | CM008373.2 | 495.36 | 46.5 | 7,128 | - | 107 | 2,873 | 7,356 | 651 | | | Chr | 7D | NC_053041.2 | CM008374.2 | 644.84 | 46.4 | 9,114 | 19 | 141 | 3,936 | 9,530 | 866 | | | | Pltd | NC_022133.1 | - | 0.11 | 37.3 | 80 | 4 | 30 | - | 114 | - | | | Un | - | . | - | 196.53 | 44.9 | 872 | 1,631 | 30 | 372 | 2,868 | 245 | |
Click on chromosome name to open Genome Data Viewer |