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综合生理学,转录基因和代谢学分析揭示了与树中应激耐受性相关的关键基因

Li Sun¹, Tengyue Yan¹, Tao Wang¹

¹Jiangsu Key Laboratory for Conservation and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China.

Journal of hazardous materials

|November 26, 2025

概括

这项研究揭示了树如何应对 (Cd) 污染,确定了关键基因和涉及排毒的途径. 这些发现为开发Cd耐受树提供了洞察力,以实现有效的植物修复.

科学领域:

环境科学环境科学
植物生物学植物生物学
分子生物学分子生物学

背景情况:

(Cd) 污染是一个严重的环境和健康问题.
使用豆物种进行植物修复是有希望的,但需要对Cd耐受机制有更深入的了解.
缺乏对对Cd压力的反应的综合生理学,转录学和代谢学分析.

研究的目的:

研究木对引起的压力的综合生理,生化,转录和代谢反应.
确定基因和通路对于木的耐受性和排毒至关重要.
为培育耐的树品种提供见解,以增强植物修复.

主要方法:

在应激下对树进行表型和生化分析.
转录组测序以识别差异表达的基因.
代谢分析,以探索代谢途径的改变.
酵母中候选基因 (WRKY49,NAC1) 的异质表达以确认功能.

主要成果:

压力显著抑制了的生长,减少了生物量,并导致氧化损伤 (增加了MDA和ROS).
抗氧化酶被激活,关键的代谢途径 (碳水化合物代谢,类生物合成) 被改变.
确定了4255个差异表达的基因,富含二次代谢物生物合成和激素信号转导.
诱导了关键的转运体家族 (ABC,ZIP,MATE) 和转录因子 (WRKY,NAC),其中WRKY49和NAC1增强了酵母中的Cd耐受性.

结论:

树表现出复杂的生理和分子适应压力的适应.
特定的转运体家族和转录因子在排毒中起着至关重要的作用.
像WRKY49和NAC1这样的候选基因是开发植物修复策略的有希望的目标.

关键词:

应激压力是因为.代谢组中的代谢.生理学指标生理学指标这是一棵树.转录因子转录因子转录组转录组就是一个转录组.

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