Relative contribution of environmental medium and internal organs to lead accumulation of wheat grain
文献类型：期刊论文
| 作者 | Ma, Chuang4; Xie, Pan4; Yang, Jun2; Liu, Fuyong4; Hu, Huafeng3; Du, Jun1; Zhang, Ke4; Lin, Lin4; Zhang, Hongzhong4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-04-20 |
| 卷号 | 818页码:10 |
| 关键词 | Wheat Pb Atmospheric deposition Soil contamination Lead isotope Organ contribution rate |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2021.151832 |
| 通讯作者 | Yang, Jun(yangj@igsnrr.ac.cn) |
| 英文摘要 | Lead (Pb) pollution in wheat has received considerable research attention globally due to its persistence and ease of accumulation, posing severe health risks to humans. This study explored the relative contribution of the environmental medium (atmospheric deposition and soil) and wheat internal organs to Pb accumulation in wheat grains, using field experiments by contrasting treatments. The concentration and bioavailability of Pb in the soil were significantly lower than those of atmospherically deposited Pb (P < 0.05). Pb accumulation rate in wheat grains was consistent with the grain filling rate, which first increased and then decreased, reaching the highest level at the middle filling stage. Pb isotope analysis showed that atmospheric deposition was the main source of Pb in the shoots of wheat plants, contributing more than 80.0% of Pb in grains. Although the roots had the highest Pb concentration, the spikes had the greatest relative contribution (58.4%) to Pb accumulation in the wheat grains, followed by that of the leaves (24.5%), whereas the contribution of roots was the lowest (17.1%) among all plant organs. In addition, among all leaves, the contribution of flag leaves to Pb accumulation in the grain was higher than the cumulative contribution of all other leaves, where flag leaves and other leaves contributed 13.8% and 10.7%, respectively. Collectively, the absorption of atmospherically deposited Pb by wheat spikes is the leading cause of Pb pollution in wheat grains. These results may aid in formulating strategies to reduce Pb concentration in grains and ensure food quality and safety.(c) 2021 Elsevier B.V. All rights reserved. |
| WOS关键词 | TRITICUM-AESTIVUM L. ; EAR PHOTOSYNTHESIS ; ATMOSPHERIC DEPOSITION ; HEAVY-METALS ; DURUM-WHEAT ; FLAG LEAF ; YIELD ; CADMIUM ; SOIL ; MOBILITY |
| 资助项目 | Henan Province Key R&D and Promotion Projects[212102310063] ; National Natural Science Foundation of China[41501527] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000795457700012 |
| 出版者 | ELSEVIER |
| 资助机构 | Henan Province Key R&D and Promotion Projects ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/178126]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yang, Jun |
| 作者单位 | 1.Henan Acad Agr Sci, Zhengzhou 45001, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resource Res, Beijing 100101, Peoples R China 3.Henan Univ Anim Husb & Econ, Zhengzhou 45001, Peoples R China 4.Zhengzhou Univ Light Ind, Henan Collaborat Innovat Ctr Environm Pollut Cont, Zhengzhou 45000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Chuang,Xie, Pan,Yang, Jun,et al. Relative contribution of environmental medium and internal organs to lead accumulation of wheat grain[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,818:10. |
| APA | Ma, Chuang.,Xie, Pan.,Yang, Jun.,Liu, Fuyong.,Hu, Huafeng.,...&Zhang, Hongzhong.(2022).Relative contribution of environmental medium and internal organs to lead accumulation of wheat grain.SCIENCE OF THE TOTAL ENVIRONMENT,818,10. |
| MLA | Ma, Chuang,et al."Relative contribution of environmental medium and internal organs to lead accumulation of wheat grain".SCIENCE OF THE TOTAL ENVIRONMENT 818(2022):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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