Mechanism of Pb absorption in wheat grains

doi:10.1016/j.jhazmat.2021.125618

	Mechanism of Pb absorption in wheat grains
	Ma, Chuang 2; Liu, Fuyong 1,2; Xie, Pan 2; Zhang, Ke 2; Yang, Junxing 3; Zhao, Jihong 2; Zhang, Hongzhong 2
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2021-08-05
卷号	415 页码:12
关键词	Wheat Grains Pb Absorption regularity Organs contribution
ISSN号	0304-3894
DOI	10.1016/j.jhazmat.2021.125618
通讯作者	Ma, Chuang(machuang819@163.com)
英文摘要	Atmospheric deposition is the primary source of external environmental media for lead (Pb) influx in wheat grains. However, the mechanisms of Pb grain absorption remains unclear. We explored this mechanism through comparative experiments, involving defoliating leaf blades (TG) and a control group (CK) of field wheat after the anthesis stage. Scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy analysis displayed that leaves and ears can directly absorb atmospheric deposition Pb through stomata. Compared with CK, the yield, grain Pb content, and grain Pb accumulation of TG wheat were significantly decreased by 13.25%, 22.10%, and 32.58%, respectively. Combined with the Pb isotope analysis, the ear had the highest contribution to grain Pb followed by leaf and root. Simultaneously, the absorption rate of grain Pb demonstrated a dynamic trend of "N" shape. Dominant contribution periods of the root, leaf, and ear organs to grain Pb accumulation were different. Unlike the root system, the contribution of the aboveground to grain Pb increased gradually, and the contribution of leaf and ear to grain Pb were mainly concentrated in the early and late filling stage, respectively. Our findings can provide a theoretical basis for the control of Pb pollution in grains.
资助项目	Henan Province Key R&D and Promotion Projects[212102310063] ; National Natural Science Foundation of China[41501527]
WOS关键词	TRITICUM-AESTIVUM L. ; HEAVY-METAL ; EAR PHOTOSYNTHESIS ; FLAG LEAF ; WINTER-WHEAT ; DURUM-WHEAT ; VEGETABLES ; FOLIAR ; PLANTS ; YIELD
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000657737000001
资助机构	Henan Province Key R&D 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/311030/164084]
专题	中国科学院地理科学与资源研究所
通讯作者	Ma, Chuang
作者单位	1.Univ Camerino, Dept Chem, I-62032 Camerino, MC, Italy 2.Zhengzhou Univ Light Ind, Henan Collaborat Innovat Ctr Environm Pollut Cont, Zhengzhou 45000, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resource Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Ma, Chuang,Liu, Fuyong,Xie, Pan,et al. Mechanism of Pb absorption in wheat grains[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,415:12.
APA	Ma, Chuang.,Liu, Fuyong.,Xie, Pan.,Zhang, Ke.,Yang, Junxing.,...&Zhang, Hongzhong.(2021).Mechanism of Pb absorption in wheat grains.JOURNAL OF HAZARDOUS MATERIALS,415,12.
MLA	Ma, Chuang,et al."Mechanism of Pb absorption in wheat grains".JOURNAL OF HAZARDOUS MATERIALS 415(2021):12.