Phylogenetic analysis in some Hordeum species (Triticeae; Poaceae) based on two single-copy nuclear genes encoding acetyl-CoA carboxylase |
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| Institution: | 1. Laboratory of Mechanisms of Cell Motility, Institute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky Av., 194064 St Petersburg, Russia;2. Saint Petersburg State University, 7/9 Universitetskaya nab, 199034 St Petersburg, Russia;3. Department of Biochemistry and Cell Biology, Faculty of Natural Sciences, Kazimierz Wielki University in Bydgoszcz, 12 Ks. J. Poniatowski St., 85-671 Bydgoszcz, Poland;1. N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia;2. Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, Russia;3. Moscow Institute of Physics and Technology, Dolgoprudny, Moscow region, Russia;4. Skolkovo Institute of Science and Technology, Skolkovo, Russia;1. Interdisciplinary Nanoscience Center iNANO, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark;2. Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark |
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| Abstract: | We investigate the phylogenetic relationship, and evolutionary history of 18 diploid and polyploid Hordeum species including 22 taxa based on two single-copy nuclear ACC1 and ACC2 genes using maximum parsimony, maximum likelihood, and Bayesian inference. The results of molecular phylogenetic analysis demonstrated genetic relationships among taxa and origin of polyploids. Our phylogenetic analyses revealed a clear alloploid origin of Hordeum capense, with Eurasian Hordeum marinum subsp. gussoneanum as the Xa genome donor and diploid Asian Hordeum roshevitzii as the H genome donor. The formation of hexaploid Hordeum lechleri likely involves hybridization between tetraploid Hordeum brachyantherum subsp. brachyantherum and a diploid possessing the I genome. The Acc1 and Acc2 gene data analyses suggested that Siberian Hordeum bogdanii might have be the common ancestor of the diploid New World Hordeum species. Perennial diploid South American species, Hordeum comosum was the first-diverging group within the clade of diploid American species in the analyses. |
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