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PdabZIP69通过调节抗氧化酶活性和PdbbHLH1表达来增强对干旱的耐受性"山"

Xu Li¹, Meiqi Zhou¹, Yuan Zhang¹

¹State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China.

Journal of plant physiology

|March 6, 2026

概括

树PdabZIP69通过提高抗氧化能力和调节PdbbHLH1表达来增强干旱耐受性. 这项研究确定了一个关键的bZIP转录因子,用于提高植物对干旱压力的弹性.

科学领域:

植物分子生物学植物分子生物学
植物生理学植物生理学
遗传学是一个遗传学.

背景情况:

植物基础氨酸拉链 (bZIP) 蛋白质对于生长,发育和应激反应至关重要.
bZIP转录因子是已知的植物干旱应激反应的调节者,但树的特定功能需要进一步探索.

研究的目的:

为了研究树bZIP基因,PdabZIP69在干旱耐受性中的作用.
阐明PdabZIP69介导的抗干旱性背后的分子机制.

主要方法:

在"山西"树中识别和表征PdabZIP69.
产生过度表达PdabZIP69 (OE) 的转基因树系.
干旱压力测试,生理分析,酵母一混合 (Y1H),染色素免疫沉-PCR (ChIP-PCR) 和双化酶测试.

主要成果:

在干旱压力下,PdabZIP69的调节显著增加.
PdabZIP69-OE植物表现出增强的干旱耐受性,减少水损失,并改善了抗氧化酶活动 (SOD,POD).
欧植物表现出较低的过氧化 (H2O2) 和甲 (MDA) 含量,具有较高的プロ林含量.
PdabZIP69直接与干旱耐受性调节剂PdbbHLH1的促进体结合并激活.

结论:

PdabZIP69通过增强反应性氧物种 (ROS) 清理系统来提高树的干旱耐受性.
PdabZIP69通过PdbbHLH1基因路径调节干旱耐受性.
这项研究提供了宝贵的遗传资源,用于研究bZIP家族在树干旱耐受性中的功能.

关键词:

干旱造成的压力是干旱.在PdabZIP6969中使用.反应性氧物种的清理工作.转录因子是一种转录因子.转录法规转录法规山西木 (Populus davidiana × P. alba var. 木) 是一个大树. (Pyramidalis) 是指一个金字塔.

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