Vol 20: Genome-Wide Identification and Evolutionary and Expression Analyses of MYB-Related Genes in Land Plants.Reportar como inadecuado



 Vol 20: Genome-Wide Identification and Evolutionary and Expression Analyses of MYB-Related Genes in Land Plants.


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This article is from DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes, volume 20.AbstractMYB 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 flowering 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.



Autor: Du, Hai; Wang, Yong-Bin; Xie, Yi; Liang, Zhe; Jiang, San-Jie; Zhang, Shuang-Shuang; Huang, Yu-Bi; Tang, Yi-Xiong

Fuente: https://archive.org/







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