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Transcriptome analysis of rice (Oryza sativa L.) shoots responsive to cadmium stress

文献类型: 外文期刊

作者: Sun, Lijuan 1 ; Wang, Jun 1 ; Song, Ke 1 ; Sun, Yafei 1 ; Qin, Qin 1 ; Xue, Yong 1 ;

作者机构: 1.Shanghai Acad Agr Sci, Inst ECOenvironm & Plant Protect, Shanghai 201403, Peoples R China

2.Shanghai Sci Observat & Expt Stn Agr Environm & C, Shanghai 201403, Peoples R China

3.Shanghai Environm Protect Monitoring Stn Agr, Shanghai 201403, Peoples R China

4.Shanghai Engn Res Ctr Low Carbon Agr SERLA, Shanghai 201403, Peoples R China

5.Shanghai Key Lab Protected Hort Technol, Shanghai 201403, Peoples R China

6.Nanjing Agr Univ, Coll Resources & Environm Sci, 1 Weigang, Nanjing 210095, Jiangsu, Peoples R China

期刊名称:SCIENTIFIC REPORTS ( 影响因子:4.379; 五年影响因子:5.133 )

ISSN: 2045-2322

年卷期: 2019 年 9 卷

页码:

收录情况: SCI

摘要: Cadmium (Cd) is highly toxic to living organisms. This study aimed to elucidate the regulation of gene expression in rice shoots under Cd stress. Rice plants were exposed to 0, 50, 75, 100 mu mol/L CdCl2 in hydroponic culture for 7 d. Transcriptional changes in rice shoots were examined by transcriptome sequencing techniques. A total of 2197 DEGs (987 up-regulated and 1210 down-regulated) were detected in rice shoots under the exposure of 75 mu mol/L CdCl2. GO and KEGG enrichment analyses showed that genes encoding auxin-responsive protein IAA and peroxidase were up-regulated, while genes encoding proteins involved in signal transduction, including TIFY family, ERF and bZIP were down-regulated. Abundant ROS related terms were also identified and grouped into significantly differentially expressed GO terms, including oxidoreductase activity, catalytic activity, oxidation-reduction process, confirming the enhanced oxidative stress of Cd. Genes encoding photosystem I reaction center subunit and photosynthetic NDH subunit of luminal location were up-regulated in pathway of energy metabolism, suggesting an interference of photosynthesis by Cd stress. Our results improve the understanding of the complex molecular responsive mechanisms of rice shoots under Cd stress.

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