title: Molecular evolution of Wcor15 gene enhanced our understanding of the origin of A, B and D genomes in Triticum aestivum.
abstract: The allohexaploid bread wheat originally derived from three closely related species with A, B and D genome. Although numerous studies were performed to elucidate its origin and phylogeny, no consensus conclusion has reached. In this study, we cloned and sequenced the genes Wcor15-2A, Wcor15-2B and Wcor15-2D in 23 diploid, 10 tetraploid and 106 hexaploid wheat varieties and analyzed their molecular evolution to reveal the origin of the A, B and D genome in Triticum aestivum. Comparative analyses of sequences in diploid, tetraploid and hexaploid wheats suggest that T. urartu, Ae. speltoides and Ae. tauschii subsp. strangulata are most likely the donors of the Wcor15-2A, Wcor15-2B and Wcor15-2D locus in common wheat, respectively. The Wcor15 genes from subgenomes A and D were very conservative without insertion and deletion of bases during evolution of diploid, tetraploid and hexaploid. Non-coding region of Wcor15-2B gene from B genome might mutate during the first polyploidization from Ae. speltoides to tetraploid wheat, however, no change has occurred for this gene during the second allopolyploidization from tetraploid to hexaploid. Comparison of the Wcor15 gene shed light on understanding of the origin of the A, B and D genome of common wheat.
authors.affiliation: School of Agronomy, Anhui Agricultural University, Hefei 230036, China.|Key Laboratory of Wheat Biology and Genetic Improvement on South Yellow &Huai River Valley, Ministry of Agriculture, Hefei 230036, China.
authors.forename: Fangfang
authors.initials: F
authors.lastname: Liu
authors.affiliation: School of Agronomy, Anhui Agricultural University, Hefei 230036, China.|Key Laboratory of Wheat Biology and Genetic Improvement on South Yellow &Huai River Valley, Ministry of Agriculture, Hefei 230036, China.
authors.forename: Hongqi
authors.initials: H
authors.lastname: Si
authors.affiliation: School of Agronomy, Anhui Agricultural University, Hefei 230036, China.|Key Laboratory of Wheat Biology and Genetic Improvement on South Yellow &Huai River Valley, Ministry of Agriculture, Hefei 230036, China.
authors.forename: Chengcheng
authors.initials: C
authors.lastname: Wang
authors.affiliation: School of Agronomy, Anhui Agricultural University, Hefei 230036, China.|Biology Department, Saint Mary's University, Halifax, NS, B3H 3C3 Canada.
authors.forename: Genlou
authors.initials: G
authors.lastname: Sun
authors.affiliation: School of Agronomy, Anhui Agricultural University, Hefei 230036, China.
authors.forename: Erting
authors.initials: E
authors.lastname: Zhou
authors.affiliation: School of Agronomy, Anhui Agricultural University, Hefei 230036, China.
authors.forename: Can
authors.initials: C
authors.lastname: Chen
authors.affiliation: School of Agronomy, Anhui Agricultural University, Hefei 230036, China.|Key Laboratory of Wheat Biology and Genetic Improvement on South Yellow &Huai River Valley, Ministry of Agriculture, Hefei 230036, China.|National United Engineering Laboratory for Crop Stress Resistance Breeding, Hefei 230036, China.|Anhui Key Laboratory of Crop Biology, Hefei 230036, China.
authors.forename: Chuanxi
authors.initials: C
authors.lastname: Ma
mesh_terms: D019143:Evolution, Molecular; D018745:Genome, Plant; D010802:Phylogeny; D011123:Polyploidy; D014908:Triticum / Q000235:genetics*