title: Phylogenetic analysis of the genus Avena based on chloroplast intergenic spacer psbA-trnH and single-copy nuclear gene Acc1.
abstract: Two uncorrelated nucleotide sequences, chloroplast intergenic spacer psbA-trnH and acetyl CoA carboxylase gene (Acc1), were used to perform phylogenetic analyses in 75 accessions of the genus Avena, representing 13 diploids, seven tetraploid, and four hexaploids by maximum parsimony and Bayesian inference. Phylogenic analyses based on the chloroplast intergenic spacer psbA-trnH confirmed that the A genome diploid might be the maternal donor of species of the genus Avena. Two haplotypes of the Acc1 gene region were obtained from the AB genome tetraploids, indicating an allopolyploid origin for the tetraploid species. Among the AB genome species, both gene trees revealed differences between Avena agadiriana and the other species, suggesting that an AS genome diploid might be the A genome donor and the other genome diploid donor might be the Ac genome diploid Avena canariensis or the Ad genome diploid Avena damascena. Three haplotypes of the Acc1 gene have been detected among the ACD genome hexaploid species. The haplotype that seems to represent the D genome clustered with the tetraploid species Avena murphyi and Avena maroccana, which supported the CD genomic designation instead of AC for A. murphyi and A. maroccana.
authors.affiliation: a Triticeae Research Institute, Sichuan Agricultural University, Wenjiang District, 211 Huimin Road, Chengdu 611130, Sichuan, China.
authors.forename: Hong-Hai
authors.initials: HH
authors.lastname: Yan
authors.forename: Bernard R
authors.initials: BR
authors.lastname: Baum
authors.forename: Ping-Ping
authors.initials: PP
authors.lastname: Zhou
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao
authors.forename: Yu-Ming
authors.initials: YM
authors.lastname: Wei
authors.forename: Chang-Zhong
authors.initials: CZ
authors.lastname: Ren
authors.forename: Fang-Qiu
authors.initials: FQ
authors.lastname: Xiong
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.forename: Lin
authors.initials: L
authors.lastname: Zhong
authors.forename: Gang
authors.initials: G
authors.lastname: Zhao
authors.forename: Yuan-Ying
authors.initials: YY
authors.lastname: Peng
mesh_terms: D000103:Acetyl-CoA Carboxylase / Q000235:genetics*; D001499:Bayes Theorem; D002467:Cell Nucleus / Q000235:genetics; D002736:Chloroplasts / Q000235:genetics*; D019143:Evolution, Molecular; D061125:Genes, Chloroplast; D010802:Phylogeny; D006109:Poaceae / Q000145:classification / Q000235:genetics*; D011123:Polyploidy; D017422:Sequence Analysis, DNA
chemical_list: D000103:Acetyl-CoA Carboxylase
keywords: Avena; donneur de génome; genome donor; gène nucléaire; nuclear gene; phylogenetic relationship; relations phylogénétiques