The Phosphoproteomic Response of Rice Seedlings to Cadmium Stress
文献类型: 外文期刊
第一作者: Zhong, Min
作者: Zhong, Min;Li, Sanfeng;Huang, Fenglin;Qiu, Jiehua;Zhang, Jian;Sheng, Zhonghua;Tang, Shaoqing;Wei, Xiangjin;Hu, Peisong;Zhong, Min;Huang, Fenglin
作者机构:
关键词: cadmium;rice (Oryza sativa L,);iTRAQ;phosphoproteome;post-translational modification
期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:5.923; 五年影响因子:6.132 )
ISSN: 1422-0067
年卷期: 2017 年 18 卷 10 期
页码:
收录情况: SCI
摘要: The environmental damage caused by cadmium (Cd) pollution is of increasing concern in China. While the overall plant response to Cd has been investigated in some depth, the contribution (if any) of protein phosphorylation to the detoxification of Cd and the expression of tolerance is uncertain. Here, the molecular basis of the plant response has been explored in hydroponically raised rice seedlings exposed to 10 mu M and 100 mu M Cd2+ stress. An analysis of the seedlings' quantitative phosphoproteome identified 2454 phosphosites, associated with 1244 proteins. A total of 482 of these proteins became differentially phosphorylated as a result of exposure to Cd stress; the number of proteins affected in this way was six times greater in the 100 M Cd2+ treatment than in the 10 mu M treatment. A functional analysis of the differentially phosphorylated proteins implied that a significant number was involved in signaling, in stress tolerance and in the neutralization of reactive oxygen species, while there was also a marked representation of transcription factors.
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