Comparative study on changes in Cd accumulation and ionome between rice and spinach: Impact of zinc ion activity
文献类型：期刊论文
| 作者 | Wang, Meie; Ma, Wankai ; Chaney, Rufus L. L.; Green, Carrie E. E.; Chen, Weiping
|
| 刊名 | JOURNAL OF ENVIRONMENTAL QUALITY
 |
| 出版日期 | 2022 |
| 页码 | 1-9 |
| ISSN号 | 0047-2425 |
| 英文摘要 | Excessive Cd accumulation in rice grain has caused chronic Cd diseases in humans. In most crops, 100 times more Zn than Cd strongly inhibits Cd uptake and translocation. However, this response is not found for rice (Oryza sativa L.), which was found to have an unusual Cd uptake pattern compared with other crops, such as spinach (Spinacia oleracea L.). Moreover, studies on shared transporters between Zn and Cd using normal solution experiments with traditional high concentrations of metal ions may result in irrelevant interactions. Therefore, we developed ethyleneglycoltetraacetate-buffered nutrient solutions in this work. Rice and spinach seedlings were grown under calibrated low Cd2+ activity and low to phytotoxic Zn2+ activity levels while buffering other micronutrient cations at sufficient levels. Results showed that as rice grew with pZn(2+) = 8.1-5.4, root Cd and shoot Ni decreased significantly and gradually. However, shoot Cd and Mn in rice decreased slightly with the increase of solution Zn2+ from deficiency to sufficiency and then increased at toxic Zn2+ solution (pZn(2+) = 5.4). The shoot/root ratios of Cd in rice under toxic pZn(2+) (5.6 and 5.4 pZn(2+) activity) were significantly increased (p < .05). It could be concluded that rice absorption of Cd is not inhibited by co-contaminating (toxic) Zn. For spinach, with Zn varying from pZn(2+) = 8.1-5.7, both shoot and root Cd substantially decreased, as did shoot Ni. This work revealed that, to understand food chain Cd risks, one needs to consider the inhibitory role of Zn in limiting Cd absorption in all crops studied except rice. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48393]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.United States Department of Agriculture (USDA) 2.Chinese Academy of Sciences 3.Research Center for Eco-Environmental Sciences (RCEES) 4.University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Wang, Meie,Ma, Wankai,Chaney, Rufus L. L.,et al. Comparative study on changes in Cd accumulation and ionome between rice and spinach: Impact of zinc ion activity[J]. JOURNAL OF ENVIRONMENTAL QUALITY,2022:1-9. |
| APA | Wang, Meie,Ma, Wankai,Chaney, Rufus L. L.,Green, Carrie E. E.,&Chen, Weiping.(2022).Comparative study on changes in Cd accumulation and ionome between rice and spinach: Impact of zinc ion activity.JOURNAL OF ENVIRONMENTAL QUALITY,1-9. |
| MLA | Wang, Meie,et al."Comparative study on changes in Cd accumulation and ionome between rice and spinach: Impact of zinc ion activity".JOURNAL OF ENVIRONMENTAL QUALITY (2022):1-9. |
入库方式： OAI收割
来源：生态环境研究中心
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