Genome-wide identification and evolutionary and expression analyses of MYB-related genes in land plants
文献类型: 外文期刊
第一作者: Du, Hai
作者: Du, Hai;Wang, Yong-Bin;Xie, Yi;Zhang, Shuang-Shuang;Huang, Yu-Bi;Du, Hai;Tang, Yi-Xiong;Liang, Zhe;Jiang, San-Jie
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关键词: Classification;Evolution;Expression profile analysis;MYB-related transcription factors;Phylogenetic analysis
期刊名称:DNA RESEARCH ( 影响因子:4.458; 五年影响因子:5.371 )
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收录情况: SCI
摘要: MYB proteins constitute one of the largest transcription factor families in plants. Recent evidence revealed that MYB-related genes play crucial roles in plants. However, compared with the R2R3-MYB type, little is known about the complex evolutionary history of MYB-related proteins in plants. Here, we present a genome-wide analysis of MYB-related proteins from 16 species of owering plants, moss, Selaginella, and algae. We identified many MYB-related proteins in angiosperms, but few in algae. Phylogenetic analysis classified MYB-related proteins into five distinct subgroups, a result supported by highly conserved intron patterns, consensus motifs, and protein domain architecture. Phylogenetic and functional analyses revealed that the Circadian Clock Associated 1-like/R-R and Telomeric DNA-binding protein-like subgroups are >1 billion yrs old, whereas the I-box-binding factor-like and CAPRICE-like subgroups appear to be newly derived in angiosperms. We further demonstrated that the MYB-like domain has evolved under strong purifying selection, indicating the conservation of MYB-related proteins. Expression analysis revealed that the MYB-related gene family has a wide expression profile in maize and soybean development and plays important roles in development and stress responses. We hypothesize that MYB-related proteins initially diversified through three major expansions and domain shuffling, but remained relatively conserved throughout the subsequent plant evolution.
分类号: Q75
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