向日葵对重金属胁迫的防御机制及其土壤修复效率提高途径

摘要/Abstract

摘要： 土壤重金属污染具有隐蔽、高残留、治理难度大等特点，易通过食物链在生物体内累积，对人体健康造成威胁。向日葵（Helianthus annuus L.）是经济价值很高的油料作物，对重金属有较强的耐受性和富集能力，利用向日葵来开展重金属污染土壤的治理具有广阔的应用价值和潜力。综述了重金属在向日葵体内的迁移规律和富集特征，从激活抗氧化系统、络合重金属离子等方面阐述了向日葵对重金属胁迫的解毒（防御）机制，从农艺措施、螯合剂诱导修复、微生物联合修复等方面阐述了提高向日葵修复重金属污染土壤效率的途径，并对今后研究重点进行了展望。

杨翠凤，滕峥，李荣峰，曾小飚，贾桂康. 向日葵对重金属胁迫的防御机制及其土壤修复效率提高途径[J]. 河南农业科学, 2018, 47(4): 1-7.

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