白桦HD-Zip基因家族生物信息学及应答盐胁迫分析

doi:10.7525/j.issn.1673-5102.2018.06.017

摘要/Abstract

摘要： HD-Zip转录因子蛋白家族是植物特有的一类转录因子蛋白，在植物生长发育和抵抗逆境胁迫等过程中发挥着重要作用。利用白桦全基因组数据库，获得白桦35条HD-Zip蛋白序列，参考拟南芥中该家族的分类方法，将这些成员分成HD-ZipⅠ-Ⅳ四个亚家族，并对这些成员的蛋白保守结构域、氨基酸组成、染色体分布、和理化性质等进行了预测和分析。从高盐处理的白桦幼苗根组织的转录组数据，鉴定了7个差异表达的基因。本研究为进一步研究白桦HD-Zip家族基因调控白桦耐盐性的功能提供了理论支持。

关键词: 白桦, HD-Zip, 基因家族, 生物信息学分析

Abstract: Homeodomain-leucine zipper (HD-Zip) proteins are ubiquitous in plants and participate in various aspects of plant growth and developmental processes as well as environmental responses. Using birch genome database, we acquired 35 putative HD-Zip genes. These genes were classified into four subfamilies, Ⅰ to Ⅳ, based on phylogenetic analysis. The additional conserved domains, protein structures, chromosome distribution and physiological functions of these members were further predicted and analyzed. To gain more insights into the roles of birch HD-Zip genes in salinity tolerance, we identified seven genes which were highly induced by salt stress using transcriptomic data. This study provides a solid foundation for uncovering the biological roles of HD-Zip genes in salt response from Betula platyphylla.

Key words: Betula platyphylla Suk., HD-Zip, gene family, bioinformatic analysis

中图分类号:

S722.3+6

王家啟, 张曦, 李莉. 白桦HD-Zip基因家族生物信息学及应答盐胁迫分析[J]. 植物研究, 2018, 38(6): 931-938.

WANG Jia-Qi, ZHANG Xi, LI Li. Bioinformatic and Expression Analysis of HD-Zip Family Gene in Betula platyphylla[J]. Bulletin of Botanical Research, 2018, 38(6): 931-938.

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