RRC ID 36342
著者 Takumi S, Morimoto R.
タイトル Implications of an inverted duplication in the wheat KN1-type homeobox gene Wknox1 for theorigin of Persian wheat.
ジャーナル Genes Genet Syst
Abstract Introgression between related species with different ploidy levels has played important roles in wheat subspecies differentiation. Persian wheat, a cultivated tetraploid wheat subspecies (Triticum turgidum subsp. carthlicum), is postulated to have evolved through interploidy hybridization between tetraploid and hexaploid wheats. Here, we report evidence for the origin of subsp. carthlicum based on the discovery of a new allele for the 5th-to-6th exon region of the Wknox1bKNOTTED1-type homeobox gene in a common wheat subspecies (T. aestivum subsp. carthlicoides). In this Wknox1b region, subsp. carthlicoides contains an inverted duplication mutation in the 3' flanking region of a 157-bp MITE insertion site. This structural mutation resulted in the suppression of Wknox1b expression in subsp. carthlicoides, but no structural mutation was observed in the same region of subsp. carthlicum. In addition, the carthlicum allele for the Wknox1b 5th-to-6th exon region exhibited the same sequence as that in the wild emmer wheat subsp. dicoccoides. These observations support an alternative hypothesis that subsp. carthlicum evolved by interploidy hybridization between subsp. carthlicoides and tetraploid wheat.
巻・号 90(2)
ページ 115-20
公開日 2015-1-1
DOI 10.1266/ggs.90.115
PMID 26399771
MeSH Gene Dosage Gene Duplication Gene Expression Genes, Plant Genetic Speciation Haplotypes Homeodomain Proteins / genetics* Homeodomain Proteins / metabolism Plant Proteins / genetics* Plant Proteins / metabolism Polyploidy RNA, Plant / genetics RNA, Plant / metabolism Triticum / genetics*
IF 0.917
引用数 1
WOS 分野 BIOCHEMISTRY & MOLECULAR BIOLOGY GENETICS & HEREDITY
リソース情報
コムギ KU-138 KU-139-1 KU-139-2 KU-187 KU-1800 KU-1801 KU-1807 KU-1808 KU-3724 KU-7309 KU-199-1 KU-1-2 KU-20-1