Phytoexclusion of heavy metals using low heavy metal accumulating cultivars: A green technology

doi:10.1016/j.jhazmat.2021.125427

	Phytoexclusion of heavy metals using low heavy metal accumulating cultivars: A green technology
	Wang, Liang 2,3; Zhang, Qingying 1,2; Liao, Xiaoyong 2,3; Li, Xiaohua 4; Zheng, Shunan 4; Zhao, Fenghua 2
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2021-07-05
卷号	413 页码:15
关键词	Farmland Heavy metals Low HM accumulating cultivars Low accumulation mechanism Safe utilization
ISSN号	0304-3894
DOI	10.1016/j.jhazmat.2021.125427
通讯作者	Liao, Xiaoyong(Liaoxy@igsnrr.ac.cn)
英文摘要	Heavy metal (HM) pollution of farmland is a serious problem worldwide and consumption of HM-contaminated food products poses significant public health risks. Phytoexclusion using low HM accumulating cultivars (LACs) is a promising and practical technology to mitigate the risk of HM contamination of agricultural products grown in polluted soils, and does not alter cultivation practices, is easy to apply, and is economical. This review provides an overview of the major scientific advances accomplished in the field of LACs worldwide. The LACs concept and identification criteria are presented, and the known LACs among currently cultivated grain crops and vegetables are re-evaluated. The low HM accumulation by LACs is affected by crop ecophysiological features and soil physicochemical characteristics. Taking low Cd accumulating cultivars as an example, it is known that they can efficiently exclude Cd from entering their edible parts in three ways: 1) decrease in root Cd uptake by reducing organic acids secretion in the rhizosphere and transport protein production; 2) restriction of Cd translocation from roots to shoots via enhanced Cd retention in the cell wall and Cd sequestration in vacuoles; and 3) reduction in Cd translocation from shoots to grains by limiting Cd redirection and remobilization mediated through nodes. We propose an LAC application strategy focused on LACs and optimized to work with other agronomic measures according to the classification of HM risk level for LACs, providing a cost-effective and practical solution for safe utilization of large areas of farmland polluted with low to moderate levels of HMs.
资助项目	National Key Research and Development Program of China[2017YFD0800900] ; Program of National Science and Technology Basic Works of the Ministry of Science and Technology of China[2015FY111300]
WOS关键词	ORYZA-SATIVA L. ; LOW CADMIUM ACCUMULATION ; MARKER-ASSISTED SELECTION ; CONTAMINATED PADDY FIELD ; CD-ACCUMULATION ; RICE CULTIVARS ; ORGANIC-ACIDS ; WATER MANAGEMENT ; MULTIPLE METALS ; ROOT MORPHOLOGY
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000647589100003
资助机构	National Key Research and Development Program of China ; Program of National Science and Technology Basic Works of the Ministry of Science and Technology of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162653]
专题	中国科学院地理科学与资源研究所
通讯作者	Liao, Xiaoyong
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Beijing Key Lab Environm Damage Assessment & Reme, Beijing 100101, Peoples R China 4.Minist Agr, Rural Energy & Environm Agcy, Beijing 100125, Peoples R China
推荐引用方式 GB/T 7714	Wang, Liang,Zhang, Qingying,Liao, Xiaoyong,et al. Phytoexclusion of heavy metals using low heavy metal accumulating cultivars: A green technology[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,413:15.
APA	Wang, Liang,Zhang, Qingying,Liao, Xiaoyong,Li, Xiaohua,Zheng, Shunan,&Zhao, Fenghua.(2021).Phytoexclusion of heavy metals using low heavy metal accumulating cultivars: A green technology.JOURNAL OF HAZARDOUS MATERIALS,413,15.
MLA	Wang, Liang,et al."Phytoexclusion of heavy metals using low heavy metal accumulating cultivars: A green technology".JOURNAL OF HAZARDOUS MATERIALS 413(2021):15.