文献类型：期刊文献

英文题名：Cadmium accumulation, sub-cellular distribution and chemical forms in rice seedling in the presence of sulfur

作者：Zhang, Wen[1,2,3];Lin, Kuangfei[1,2,3];Zhou, Jian[1,2,3];Zhang, Wei[1,2,3];Liu, Lili[1,2,3];Zhang, Qianqian[1,2,3]

机构：[1]E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2014

卷号：37

期号：1

起止页码：348

外文期刊名：ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000332919800038)】；

基金：This research was supported by projects of the National Natural Science Foundation of China (Nos. 40871223 and 41371467). We also would like to thank the anonymous referees for their helpful comments on this paper.

语种：英文

外文关键词：Cadmium; Sulfur; Accumulation; Sub-cellular distribution; Chemical forms

摘要：Changes in cadmium (Cd) accumulation, distribution, and chemical form in rice seedling in the joint presence of different concentrations of sulfur (S) remain almost unknown. Therefore, the indoor experiments were performed to determine the accumulation, sub-cellular distribution and chemical forms of Cd under three S levels in rice seedling for the first time. The result showed that Cd accumulation in rice roots was more than in shoots. Sub-cellular distribution of Cd in rice roots and shoots indicated that the largest proportion of Cd accumulated in cell walls and soluble fractions. As S supply increased, the proportion of Cd in cell walls reduced, while it increased in the soluble fractions. The majority of Cd existed in inorganic form, and then gradually changed to organic forms that included pectates and proteins with increased S supply. The results showed that S supply significantly influenced Cd accumulation, distribution, and chemical forms, suggesting that S might provide the material for the synthesis of sulfhydryl protein and thereby affect Cd stress on plants. These observations provided a basic understanding of potential ecotoxicological effects of joint Cd and S exposure in the environment. (C) 2013 Elsevier B.V. All rights reserved.