期刊论文

中文

植物营养与肥料学报

1008-505X

2021

27

2

332-345

10.11674/zwyf.20258

国家重点研发计划课题（2017YFD200703-3）； 湖南省教育厅优秀青年基金项目（湘教通﹝2019﹞353号）；

本校为第一机构

近年来,农产品的重金属超标问题已经引起了公众的广泛关注,也是国内外学者研究的热点。要实现农产品重金属污染的有效防控,首先需要解决的就是重金属来源问题。目前已有的研究大多集中在根系对土壤中重金属的吸收机制研究,且已基本探明作物根系对重金属的吸收转运机制,包括根际离子的活化,根细胞的吸附和扩散、跨膜运输,根皮层细胞的横向运输,中柱的薄壁细胞到木质部导管的装载,木质部向地上部的转运等一系列过程。但大气沉降对农产品重金属积累的贡献及叶片的吸收、转运和积累机制尚不清楚。若能深入研究农作物叶片对重金属的吸收、转运和存储机制,从分子层面解析其关键作用过程,则可从叶面吸收...

The problem of excessive heavy metals in agricultural products has aroused widespread public concern in recent years. Most previous studies have shown the absorption mechanism of heavy metals by roots, and have clarified that crops absorb and transfer heavy metals to the aboveground plant parts through a series of transport cells. Effective prevention or control of heavy metal pollution in agricultural products could be achieved by proper identification of sources of the heavy metals. However, the contribution of atmospheric deposition to the a...