文献类型：期刊文献

英文题名：Spatial distribution and toxicity of cadmium in the joint presence of sulfur in rice seedling

作者：Zhang, Wen[1,2];Lin, Kuangfei[1,2];Zhou, Jian[1,2];Zhang, Wei[1,2];Liu, Lili[1,2];Han, Xiaolin[1,2]

机构：[1]E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2013

卷号：36

期号：3

起止页码：1235

外文期刊名：ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000329530600058)】；

基金：We are deeply indebted to the National Natural Science Foundation of China (Nos. 40871223 and 41371467) for its support to this study. We also would like to thank the staff in BL15U of Shanghai Synchrotron Radiation Facility (SSRF) for their self-less help.

语种：英文

外文关键词：Cadmium; Sulfur; Thiol pool; Spatial distribution; XRF

摘要：The spatial distribution and toxic effects of cadmium (Cd) in the joint presence of sulfur (S) in rice seedling remain almost unknown. Therefore, the indoor experiments test runs were performed to determine the accumulation and toxicity of Cd in presence of S for the first time. The results showed that S supply significantly reduced the Cd accumulation and toxicity due to the decrease of Cd availability. XRF observation results illustrated that in the single Cd treatments, Cd mainly distributed in the bottom of root, while equably existed in the shoot. Additionally, S addition could facilitate Cd transfer to the top of shoot and finally form the similar distribution trend for S and Cd, suggesting that S might increase the synthesis of thiol pool (such as PCs, GSH and NPT) and then chelate Cd, which further affected Cd translocation. Such observations have provided the useful information of potential ecotoxicological effects of Cd contamination in the environment. (c) 2013 Elsevier B.V. All rights reserved.