在九种植物中，对盐胁迫下 HKT 转录因子进行全基因组鉴定和表达分析。

Genome-wide identification and expression analysis of HKT transcription factor under salt stress in nine plant species.

机构信息

Agricultural Big-Data Research Center and College of Plant Protection, Shandong Agricultural University, Taian 271018, China.

Beijing Key Laboratory of Grape Science and Enology and Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.

出版信息

Ecotoxicol Environ Saf. 2019 Apr 30;171:435-442. doi: 10.1016/j.ecoenv.2019.01.008. Epub 2019 Jan 9.

DOI:10.1016/j.ecoenv.2019.01.008

PMID:30639869

Abstract

High-affinity K+ (HKT) gene family is regulated the transport of Na+ and maintain the balance between Na+ and K+ in the process of plant growth, development and response to abiotic stress. Despite this fact, systemic and comprehensive studies on HKT in multiply plants remains unknown. A total of 29 HKT genes distributed on nine species were identified. Phylogenetic tree analysis results indicated that HKT genes were divided into five homology subfamilies. Combining structural analysis with protein contains five highly conservative motifs, HKT family has similar gene structures and special gene characteristics. Finally, the expression patterns of HKT showed two different dramatic changes in different organs and tissues under different salt stress in multiply plants. This study has many implications for research into the comparative genomics analysis of HTK gene family, which revealed regulation mechanism of HKT genes, is valuable for understanding development and response to abiotic stress in plant.

摘要

高亲和性 K+（HKT）基因家族在植物生长、发育和应对非生物胁迫的过程中调节 Na+的运输，并维持 Na+和 K+之间的平衡。尽管如此，多植物中 HKT 的系统和全面研究仍不清楚。共鉴定出分布在 9 个物种上的 29 个 HKT 基因。系统发育树分析结果表明，HKT 基因分为五个同源亚家族。结合结构分析和蛋白组成分析，发现 HKT 家族具有 5 个高度保守的基序，具有相似的基因结构和特殊的基因特征。最后，在多植物中不同器官和组织在不同盐胁迫下的表达模式显示出两种不同的剧烈变化。本研究对 HKT 基因家族的比较基因组学分析具有重要意义，揭示了 HKT 基因的调节机制，有助于理解植物的发育和对非生物胁迫的反应。