Comparative proteomic analysis provides new insights into cadmium accumulation in rice grain under cadmium stress
文献类型: 外文期刊
作者: Xue, Dawei 1 ; Jiang, Hua 3 ; Deng, Xiangxiong 1 ; Zhang, Xiaoqin 1 ; Wang, Hua; Xu, Xiangbin 1 ; Hu, Jiang 2 ; Zeng, 1 ;
作者机构: 1.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 310036, Zhejiang, Peoples R China
2.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China
3.Zhejiang Acad Agr Sci, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021,
关键词: Rice;Cadmium;Proteomic;Quantitative PCR;Gene chip
期刊名称:JOURNAL OF HAZARDOUS MATERIALS ( 影响因子:10.588; 五年影响因子:10.129 )
ISSN: 0304-3894
年卷期: 2014 年 280 卷
页码:
收录情况: SCI
摘要: Rice is one of the most important staple crops. During the growth season, rice plants are inevitably subjected to numerous stresses, among which heavy metal stress represented by cadmium contamination not only hindering the yield of rice but also affecting the food safety by Cd accumulating in rice grains. The mechanism of Cd accumulation in rice grains has not been well elucidated. In this study, we compare the proteomic difference between two genotypes with different Cd accumulation ability in grains. Verification of differentially expressed protein-encoding genes was analyzing by quantitative PCR (QPCR) and reanalysis of microarray expression data. Forty-seven proteins in total were successfully identified through proteomic screening. GO and KEGG enrichment analysis showed Cd accumulation triggered stress-related pathways in the cells, and strongly affecting metabolic pathways. Many proteins associated with nutrient reservoir and starch-related enzyme were identified in this study suggesting that a considerably damage on grain quality was caused. The results also implied stress response was initiated by the abnormal cells and the transmission of signals may mediated by reactive oxygen species (ROS). Our research will provide new insights into Cd accumulation in rice grain under Cd stress. (C) 2014 Elsevier B.V. All rights reserved.
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