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小麦（）中抗冻基因家族的全基因组鉴定和分析（）在冰冻胁迫下。

Genome-Wide Identification and Analysis of Gene Family and Resistance of () under Freezing Stress in Wheat ().

机构信息

College of Life Science, Northeast Agricultural University, Harbin 150030, China.

出版信息

Int J Mol Sci. 2022 Feb 21;23(4):2351. doi: 10.3390/ijms23042351.

DOI:10.3390/ijms23042351
PMID:35216467
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8874521/
Abstract

The basic leucine zipper () regulates plant growth and responds to stress as a key transcription factor of the Abscisic acid (ABA) signaling pathway. In this study, genes were identified in wheat and the gene structure, physicochemical properties, cis-acting elements, and gene collinearity were analyzed. RNA-Seq and qRT-PCR analysis showed that ABA and abiotic stress induced most genes expression. The ectopic expression of up-regulated the expression of several cold-responsive genes in . Physiological indexes of seedlings of different lines under freezing stress showed that enhanced the freezing tolerance of plants. Subcellular localization showed that is localized in the nucleus. Furthermore, TaABI5 physically interacted with cold-resistant transcription factor TaICE1 in yeast two-hybrid system. In conclusion, this study identified and analyzed members of the gene family in wheat. It proved for the first time that the gene affected the cold tolerance of transgenic plants and was convenient for us to understand the cold resistance molecular mechanism of . These results will provide a new inspiration for further study on improving plant abiotic stress resistance.

摘要

基本亮氨酸拉链 (bZIP) 作为脱落酸 (ABA) 信号通路的关键转录因子，调节植物生长并响应胁迫。本研究在小麦中鉴定到 bZIP 基因，并对基因结构、理化性质、顺式作用元件和基因共线性进行了分析。RNA-Seq 和 qRT-PCR 分析表明，ABA 和非生物胁迫诱导大多数 bZIP 基因表达。过表达 上调了 在 中的几个冷响应基因的表达。不同品系幼苗在冷冻胁迫下的生理指标表明， 增强了植物的抗冻性。亚细胞定位表明 定位于细胞核中。此外，TaABI5 在酵母双杂交系统中与抗寒转录因子 TaICE1 发生物理相互作用。总之，本研究鉴定和分析了小麦 bZIP 基因家族的成员。首次证明基因 影响转基因植物的耐寒性，为我们进一步研究 的抗寒性分子机制提供了便利。这些结果将为提高植物抗非生物胁迫能力提供新的启示。

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