Phylogenetic analysis of C, M, N, and U genomes and their relationships with Triticum and other related genomes as revealed by LMW-GS genes at Glu-3 loci
Autor: | Shunli Wang, Xiaozheng Wang, Sai L. K. Hsam, Guangfang Guo, Yueming Yan, Yanzhen Zhang, Ke Wang, Shanshan Li, Friedrich J. Zeller, Xiaohui Li |
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Rok vydání: | 2011 |
Předmět: |
DNA
Plant Glutens Sequence analysis Molecular Sequence Data Plant genetics Poaceae Genome Evolution Molecular Species Specificity Phylogenetics Sequence Homology Nucleic Acid Genetics Cloning Molecular Common wheat Molecular Biology Gene Phylogeny Triticum Base Sequence Phylogenetic tree biology food and beverages Sequence Analysis DNA General Medicine biology.organism_classification Molecular Weight Aegilops Genome Plant Biotechnology |
Zdroj: | Genome. 54:273-284 |
ISSN: | 1480-3321 0831-2796 |
Popis: | Phylogenetic relationships between the C, U, N, and M genomes of Aegilops species and the genomes of common wheat and other related species were investigated by using three types of low-molecular-weight glutenin subunit (LMW-GS) genes at Glu-3 loci. A total of 20 LMW-GS genes from Aegilops and Triticum species were isolated, including 11 LMW-m type and 9 LMW-i type genes. Particularly, four LMW-m type and three LMW-i type subunits encoded by the genes on the C, N, and U genomes possessed an extra cysteine residue at conserved positions, which could provide useful information for understanding phylogenetic relationships among Aegilops and Triticum genomes. Phylogenetic trees constructed by using either LMW-i or the combination of LMW-m and LMW-s, as well as analysis of all the three types of LMW-GS genes together, demonstrated that the C and U genomes were closely related to the A genome, whereas the N and M genomes were closely related to the D genome. Our results support previous findings that the A genome was derived from Triticum uratu, the B genome was from Aegilops speltoides, and the D genome was from Aegilops tauschii. In addition, phylogenetic relationships among different genomes analysed in this study support the concept that Aegilops is not monophyletic. |
Databáze: | OpenAIRE |
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