Contribution of the flag leaf to lead absorption in wheat grain at the grain-filling stage

doi:10.1016/j.ecoenv.2021.112722

	Contribution of the flag leaf to lead absorption in wheat grain at the grain-filling stage
	Ma, Chuang 2; Xie, Pan 2; Zhang, Ke 2; Yang, Junxing 1; Li, Xuanzhen 3; Liu, Fuyong 2; Lin, Lin 2; Zhang, Hongzhong 2
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2021-12-01
卷号	225 页码:10
关键词	Wheat Flag leaf Grain Pb Atmospheric particles
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2021.112722
通讯作者	Yang, Junxing(yangajx@igsnrr.ac.cn)
英文摘要	Wheat flag leaf (FL) is one of the primary sources of carbohydrates in grains; however, its role in grain lead (Pb) absorption remains unclear. A field experiment was conducted to assess the relative contribution of the FL to Pb accumulation in wheat grain by two contrasting treatments: without (CK) and with FL removal (FLR) at the grain-filling stage. The Pb concentration in leaves was closely related to leaf strata and decreased from FL to the third leaf. FLR treatment significantly reduced the yield and grain Pb concentration by 2.79% and 11.47%, respectively. The contribution of FL to grain Pb accumulation decreased gradually with the filling process, from 35.08% (at early stage) to 13.94% (at maturity stage). After FLR, the contribution proportion of atmospheric fallout to grain Pb decreased from 69.01% (CK) to 62.43% (FLR). Combined isotope analysis with scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDS) revealed that the main contribution of FLs to grain Pb originated from Pb fallout in fine atmospheric particles. Therefore, taking measures to reduce the influence of fine atmospheric particles on wheat may be an effective way to control wheat grain Pb contamination.
资助项目	Henan Province Key Research and Development and Promotion Projects[212102310063] ; National Natural Science Foundation of China[41501527]
WOS关键词	TRITICUM-AESTIVUM L. ; FOLIAR UPTAKE ; HEAVY-METALS ; PB ; DETOXIFICATION ; TOXICITY ; CADMIUM ; LEAVES ; SOIL ; EAR
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000696957100004
资助机构	Henan Province Key Research and Development and Promotion Projects ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165591]
专题	中国科学院地理科学与资源研究所
通讯作者	Yang, Junxing
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resource Res, Beijing 100101, Peoples R China 2.Zhengzhou Univ Light Ind, Henan Collaborat Innovat Ctr Environm Pollut Cont, Zhengzhou 45000, Peoples R China 3.Henan Agr Univ, Coll Forestry, Zhengzhou 450002, Peoples R China
推荐引用方式 GB/T 7714	Ma, Chuang,Xie, Pan,Zhang, Ke,et al. Contribution of the flag leaf to lead absorption in wheat grain at the grain-filling stage[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2021,225:10.
APA	Ma, Chuang.,Xie, Pan.,Zhang, Ke.,Yang, Junxing.,Li, Xuanzhen.,...&Zhang, Hongzhong.(2021).Contribution of the flag leaf to lead absorption in wheat grain at the grain-filling stage.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,225,10.
MLA	Ma, Chuang,et al."Contribution of the flag leaf to lead absorption in wheat grain at the grain-filling stage".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 225(2021):10.