摘要
近年来的土壤重金属污染问题依然严重。重金属作为一种主要的非生物胁迫,不仅严重制约植物的生长发育、影响农产品的品质及安全质量,还会通过食物链进入动物和人体内,最终威胁人体健康。如何缓解植物重金属毒害一直是国内外研究的重点和难点。花青素是一种广泛存在于自然界植物中的水溶性天然色素,参与植株的生长与发育、生物与非生物胁迫应答等。文章归纳总结文献报道,阐明重金属对植物的危害,并以砷为例说明危害机理,介绍花青素的生物学功能,以及花青素介导植物抗重金属胁迫机制,包括清除自由基、激发/促进内源抗氧化系统、螯合重金属、区室化隔离和花青素相关基因表达。针对目前重金属修复及农林废弃物化利用存在的问题,提出今后应重点开展花青素介导植物重金属胁迫和归趋的机理与应用研究,开发重金属植物修复技术的新原料,为丰富植物重金属转运机制和防控措施、减少植物重金属污染、综合利用富含花青素的有色蔬果及制糖原料等农林废弃物提供参考依据。
The problem of heavy metals pollution in soil in recent years is still serious.As a major abiotic stress,heavy metals not only seriously restrict the growth and development of plants,affect the quality and safety of agricultural products,but also enter the animals and humans through the biological chain,threatening human health at last.How to alleviate the heavy metals toxicity of plants has always been the focus and difficulty of research at home and abroad.Anthocyanin is one kind of water-soluble natural pigment widely found in plants.It can participate in plant growth and development,biological and abiotic stress responses and so on.The paper illuminated the damage of heavy metals to plants and took arsenic as an example to explain its mechanism.Introduced biological functions of anthocyanin and mechanism by which anthocyanins regulated heavy metal pollution in plants included scavenging free radicals,exciting/promoting endogenous antioxidant systems,chelating heavy metals,compartmentalization and expressing anthocyanin-related genes.Aiming at the problem of heavy metal remediation and utilization of agricultural and forestry waste,this article provided theoretical basis for enriching plant heavy metal transport mechanisms and prevention and control measures,reducing plant heavy metal pollution,comprehensive utilization of anthocyanin-rich agricultural and forestry waste such as colored vegetables and fruits,beets as sugar production raw material.It was suggested to carry out the mechanism and application research of anthocyanins to mediate heavy metal stress and fate of plants,and develop new raw materials for heavy metal phytoremediation technology in the future.
作者
耿安静
王旭
李秋剑
杨慧
陈岩
刘雯雯
陈永坚
王富华
GENG An-jing;WANG Xu;LI Qiu-jian;YANG Hui;CHEN Yan;LIUWen-wen;CHEN Yong-jian;WANG Fu-hua(Public Monitoring Center for Agro-product of Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China;Shenzhen Agricultural Products Quality and Safety Inspection and Testing Center,Shenzhen,Guangdong 518000,China;Key Laboratory of Supervision Technology of Edible Agricultural Products in Guangdong Province,Shenzhen,Guangdong 518000,China;Laboratory of Quality&Safety Risk Assessment for Agro-products(Guangzhou),Ministry of Agriculture and Rural Affairs,Guangzhou 510640,China)
出处
《南方农业学报》
CAS
CSCD
北大核心
2020年第1期80-90,共11页
Journal of Southern Agriculture
基金
国家重点研发计划项目(2019YFC1605602)
国家自然科学基金青年科学基金项目(41807475,41401367)
深圳市农产品质量安全检验检测中心食用农产品监管技术重点实验室委托技术研究项目(市农检自采合同字〔2019〕032号)~~
关键词
花青素
重金属
胁迫
介导机理
anthocyanin
heavy metals
stress
mediated mechanism
