关键词: 甘草, PRR基因家族, 生物信息学分析, 基因表达

Abstract: The pseudo-response regulator (PRR) proteins  are important part of the central oscillator of plant biological clocks. PRRs participate in the regulation of plant circadian rhythm. In addition, PRRs also play important roles in growth, development and stress adaptation. In this study, the PRR family members were identified in licorice (Glycyrrhiza uralensis Fisch.) through bioinformatics methods, and its expression patterns were analyzed under salt, low phosphorus and drought stresses in virtue of transcriptome data. The results showed that: a total of seven GurPRR members were identified in the licorice plant genome and divided into three clades based on the phylogenetic results. Moreover, numerous cold-, drought-, light-, methyl jasmonate-, abscisic acid- and salicylic acid-responsive cis-elements were observed in the GuPRR promoter regions. Transcriptome data showed that the expressions patterns of PRR family genes in Glycyrrhiza uralensis were different in different tissues and responded to different stresses. The results provide abundant information about PRR family genes in Glycyrrhiza uralensis that would benefit for  further understanding of functional roles in licorice plants.

Key words: Glycyrrhiza uralensis, PRR gene family, bioinformatics analysis, gene expression