植物代谢组学在重金属毒性机理研究中的应用  

Application of Plant Metabolomics in the Study of Heavy Metal Toxicity Mechanism

作　　者：费莹莹 张蕾[1] FEI Yingying;ZHANG Lei(College of Life Sciences,Shenyang Normal University,Shenyang,Liaoning 110034)

机构地区：[1]沈阳师范大学生命科学学院,辽宁沈阳110034

出　　处：《北方园艺》2023年第6期119-124,共6页Northern Horticulture

基　　金：国家自然科学基金资助项目(31600410)。

摘　　要：土壤重金属污染影响植物正常生长发育,甚至对人类健康造成潜在危害。代谢组学作为系统生物学的重要组成部分,为研究植物对重金属胁迫下的响应和防御机制提供可靠依据,为保障农产品质量安全提供参考依据。目前已开发出多种植物代谢组学研究方法以满足不同的研究需求。对重金属毒性机理的植物代谢组学研究主要集中在致毒机理、抗逆机制和重金属积累能力差异等方面。代谢组学研究表明,不同条件下重金属胁迫对不同植物的毒性机理不同,重金属胁迫能使植物多种代谢途径受到影响,可能导致植物生长和光合能力降低等毒性作用;也可能激活植物的防御机制,如调节DNA修复能力、植物激素水平和抗氧化活性,降低重金属的生物可利用性等,起到一定的解毒的作用。Soil heavy metal pollution affects the normal growth and development of plants,and even causes potential harm to human health.Metabolomics,as an important part of system biology,provided a reliable basis for studying the response and defense mechanism of plants to heavy metal stress,and provide reference for guaranteeing the quality and safety of agricultural products.Multiple research methods of plant metabolomics have been developed to meet different research needs.Metabolomics studies on the mechanism of toxicity of heavy metals in plants mainly focused on toxicity mechanism,stress tolerance mechanism and differences in heavy metal accumulation capacity.Metabolomics studies have shown that the mechanism of heavy-metal toxicity varies in different plants or under different conditions.Heavy metal stress can affect a variety of metabolic pathways in plants,and may lead to the reduction of plant growth and photosynthetic capacity.It may also activate the defense mechanism of plants,such as regulation of DNA repair ability,plant hormone level,and antioxidant activity,and reducing the bioavailability of heavy metals,which can play a role in detoxification.

关 键 词：重金属胁迫 代谢组学 抗逆机制 超富集植物 低积累品种 

分 类 号：X592[环境科学与工程—环境工程]