Comprehensive analyses of the BES1 gene family in Brassica napus and examination of their evolutionary pattern in representative species

• DOI: 10.1186/s12864-018-4744-4
• Publication Date: 2018-05-09T14:12:16Z
• Authors: Xiaoming Song; Xiao Ma; Chunjin Li; Jingjing Hu; Qihang Yang; Tong Wang; Li Wang; Jinpeng Wang; Di Guo; Weina Ge; Zhenyi Wang; Miaomiao Li; Qiumei Wang; Tianzeng Ren; Shuyan Feng; Lixia Wang; Weimeng Zhang; Xiyin Wang
• Keywords: Segmental duplication

The BES1 gene family, an important class of plant-specific transcription factors, play key roles in the BR signal pathway plants, regulating various development processes. Until now, there has been no comprehensive analysis family Brassica napus, and a cross-genome exploration their origin, copy number changes, functional innovation plants was also not available. We identified 28 genes B. napus from its two subgenomes (AA CC). found that 71.43% them were duplicated tetraploidization, expression showed prominent subgenome bias roots. Additionally, we 104 another 18 representative angiosperms performed comparative with including evolutionary trajectory, duplication, positive selection, pattern. Exploiting available genome datasets, large-scale across algae suggested could have originated group F, expanding to form other groups (A E) by duplicating or alternatively deleting some domains. detected additional domain containing M4 M8 exclusively F1 F2. evidence whole-genome duplication (WGD) contributed most expansion this among examined dicots, while dispersed certain monocots. Moreover, inferred selection might occurred on major phylogenetic nodes during evolution plants. Grossly, species sheds light understanding expansion, natural innovation.