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Frequent Gene Movement and Pseudogene Evolution Is Common to the Large and Complex Genomes of Wheat, Barley, and Their Relatives

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    0365266 - ÚEB 2012 RIV US eng J - Journal Article
    Wicker, T. - Mayer, K. F. X. - Šimková, Hana - Kubaláková, Marie - Choulet, F. - Doležel, Jaroslav - Stein, N. … Total 17 authors
    Frequent Gene Movement and Pseudogene Evolution Is Common to the Large and Complex Genomes of Wheat, Barley, and Their Relatives.
    Plant Cell. Roč. 23, č. 5 (2011), s. 1706-1718. ISSN 1040-4651. E-ISSN 1532-298X
    R&D Projects: GA MŠMT(CZ) LC06004; GA MŠMT OC08025
    Institutional research plan: CEZ:AV0Z50380511
    Keywords : TRITICUM-AESTIVUM L. * NUCLEAR-DNA CONTENT * HIGH-THROUGHPUT
    Subject RIV: EB - Genetics ; Molecular Biology
    Impact factor: 8.987, year: 2011

    All six arms of the group 1 chromosomes of hexaploid wheat (Triticum aestivum) were sequenced with Roche/454 to 1.3- to 2.2-fold coverage and compared with similar data sets from the homoeologous chromosome 1H of barley (Hordeum vulgare). Six to ten thousand gene sequences were sampled per chromosome. These were classified into genes that have their closest homologs in the Triticeae group 1 syntenic region in Brachypodium, rice (Oryza sativa), and/or sorghum (Sorghum bicolor) and genes that have their homologs elsewhere in these model grass genomes. Although the number of syntenic genes was similar between the homologous groups, the amount of nonsyntenic genes was found to be extremely diverse between wheat and barley and even between wheat subgenomes. Besides a small core group of genes that are nonsyntenic in other grasses but conserved among Triticeae, we found thousands of genic sequences that are specific to chromosomes of one single species or subgenome.
    Permanent Link: http://hdl.handle.net/11104/0200549

     
     
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