关键词: YABBY基因家族, 小麦, 生物信息, 进化分析, 基因功能

Abstract: YABBY family is plant-specific transcription factors and plays important roles in the regulation of lateral organ polarity and growth. In silico identification, bioinformatics and expression analysis of YABBY family genes in wheat (Trticum aestivum L.) can provide theoretical basis for exploring the roles of YABBY transcription factors in wheat. The YABBY genes in wheat were genome-widely identified in the wheat genome database according to sequences of YABBY genes from Arabidopsis and rice by BLAST software. Bioinformatics analysis of YABBY were carried out by MEME, GSDS, MEGA and PlantCARE softwares. The expression profiles were drawn based on the data from public RNA-Seq results. Total of 18 YABBY genes were identified from wheat genome, which were divided into 5 classes. Motif analysis showed that the TaYABBY proteins had C2C2 and YABBY conserved motifs. Multiple cis-elements were found in 1 000 upstream sequences of TaYABBY genes which responsed to stress and hormone response. The expression profile showed that TaYABBY genes had tissue specificity.

Key words: YABBY gene family, wheat, bioinformatics, phylogenetic analysis, gene function