Evaluating the contributions of leaf organ to wheat grain cadmium at the filling stage
文献类型：期刊论文
| 作者 | Ma, Chuang2; Xie, Pan2; Yang, Jun1; Lin, Lin2; Zhang, Ke2; Zhang, Hongzhong2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-08-10 |
| 卷号 | 833页码:11 |
| ISSN号 | 0048-9697 |
| 关键词 | Wheat Cd Leaf organ Atmospheric deposition Contribution |
| DOI | 10.1016/j.scitotenv.2022.155217 |
| 通讯作者 | Yang, Jun(yangj@igsnrr.ac.cn) |
| 英文摘要 | Cadmium (Cd) is an element of global concern in agricultural fields owing to its high bioavailability and its risk to human health via the consumption of wheat products. However, whether wheat leaves can directly absorb atmospheric Cd and transport them to the grains along with the contribution of leaves to Cd accumulation in the grains is not clear. We evaluated this mechanism through three comparative treatments: 1) exposure to atmospheric deposition (CK), 2) no exposure to atmospheric deposition (T1), and 3) exposure to atmospheric deposition with leaf cutting (T2). The Cd accumulation rate of grains in the CK, T1, and T2 groups all showed an increasing trend, followed by a decreasing trend, which was consistent with the trend of filling rate. Moreover, the critical period for leaf Cd accumulation in the grains was the early filling period, and its contribution decreased gradually as filling progressed. The contribution of the leaves to grain Cd reached 31.73% at maturity, with the reactivation of stored Cd in leaves pre flowering and the newly absorbed atmospheric Cd by leaves post-flowering contributing 19.76% and 11.97% to Cd accumulation in grains, respectively, at maturity. Sub-microstructure analysis of the leaves further confirmed that the direct Cd absorption by leaves from atmospheric deposition through stomata contributed to Cd accumulation in wheat grains. Therefore, controlling the sources of atmospheric Cd pollution and reducing Cd absorption by leaves during grain filling can effectively control Cd pollution of wheat grains. This study provides significant insights on how to more effectively control the Cd content of edible part of wheat and ensure food security. |
| WOS关键词 | HEAVY-METALS ; ATMOSPHERIC DEPOSITION ; DURUM-WHEAT ; PLANTS ; FOLIAR ; RISK ; BIOAVAILABILITY ; REMOBILIZATION ; NUTRIENTS ; RESPONSES |
| 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 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000800486900008 |
| 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/311030/179928]  |
| 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.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 Contr, Zhengzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Chuang,Xie, Pan,Yang, Jun,et al. Evaluating the contributions of leaf organ to wheat grain cadmium at the filling stage[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,833:11. |
| APA | Ma, Chuang,Xie, Pan,Yang, Jun,Lin, Lin,Zhang, Ke,&Zhang, Hongzhong.(2022).Evaluating the contributions of leaf organ to wheat grain cadmium at the filling stage.SCIENCE OF THE TOTAL ENVIRONMENT,833,11. |
| MLA | Ma, Chuang,et al."Evaluating the contributions of leaf organ to wheat grain cadmium at the filling stage".SCIENCE OF THE TOTAL ENVIRONMENT 833(2022):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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