表观遗传和表观转录学修饰在暴露于非必需金属的植物中的作用
Jagna Chmielowska-Bąk1, Iain Robert Searle2, Theophilus Nang Wakai3,4
1Department of Plant Ecophysiology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland.
Frontiers in plant science
|December 19, 2023
概括
土壤金属污染会损害作物和健康. 植物使用表观遗传和表转录学变化来应对有毒金属,影响应激耐受性和生长.
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:
- 土壤被非必需金属和金属化物污染对生态系统和人类健康构成全球风险.
- 这些有毒元素破坏植物生理学,通过破坏光合作用,细胞分裂和增加氧化应激,影响作物产量和质量.
- 植物具有表观遗传和表转录机制,以适应环境挑战并保持平衡.
研究的目的:
- 审查非必不可少的金属和金属对植物表观遗传和表转录学修改的影响.
- 突出这些分子机制在植物适应和应激记忆中的作用,以应对金属毒性.
- 巩固当前关于植物中金属诱导的DNA甲基化,基因素修饰和表体转录学变化的知识.
主要方法:
- 文献综述侧重于研究植物对金属 (Cd,Pb,Hg,Al,As) 的反应.
- 在金属应力下对全球和特定地点的DNA甲基化模式的研究分析.
- 检查对金属暴露植物中的组素修饰和表皮转录学变化的研究.
主要成果:
- 非必不可少的金属会导致DNA甲基化模式的改变,包括全球和特定位置的变化.
- 基质子的修改,如基质子变体的变化和对应尾部的修改,通过金属暴露来调节.
- 新出现的证据表明,表体转录组修饰在植物对金属应力的快速反应中起作用,尽管这一领域需要进一步研究.
结论:
- 表观遗传和表观转录机制对于植物对土壤金属污染的反应和适应至关重要.
- 了解这些修改可以带来提高作物弹性和减轻重金属不利影响的策略.
- 需要进一步的研究,以充分阐明表体转录学在植物金属耐受性和压力记忆中的作用.
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