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Comparative Transcriptional Analysis of Two Contrasting Rice Genotypes in Response to Salt Stress

文献类型： 外文期刊

作者： Ye, Xiaoxue 1 ; Tie, Weiwei 1 ; Xu, Jianlong 4 ; Ding, Zehong 1 ; Hu, Wei 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Sanya Res Inst, Yumin Rd 7, Sanya 572025, Peoples R China

2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Hainan Key Lab Biosafety Monitoring & Mol Breedin, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

3.Chinese Acad Trop Agr Sci, Hainan Inst Trop Agr Resources, Hainan Key Lab Protect & Utilizat Trop Bioresourc, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

4.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China

关键词： rice; salt stress; transcriptional analysis; transporters; transcription factors; reactive oxygen species

期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）

ISSN：

年卷期： 2022 年 12 卷 5 期

页码：

收录情况： SCI

摘要： Improving rice salt-tolerance is an effective way to deal with the increasing food demand caused by soil salinization and population growth. Nevertheless, the molecular mechanisms of rice salt-tolerance remain elusive. In this study, comparative transcriptomic analyses were performed to identify salt-tolerance genes that were either specifically regulated or more changed in salt-tolerant cultivar FL478 relative to salt-sensitive cultivar 93-11. In total, 1423, 175, and 224 salt-tolerance genes were identified under 200 mM NaCl treatment for 6 h, 24 h, and 72 h, respectively. These genes were commonly enriched in transport and peroxidase/oxidoreductase activity across all timepoints, but specially enriched in transcription regulator activity at 6 h under salt stress. Further analysis revealed that 53 transporters, 38 transcription factors (TFs), and 23 reactive oxygen species (ROS) scavenging enzymes were involved in salt adaptation of FL478, and that overall, these salt-tolerance genes showed a faster transcriptional expression response in FL478 than in 93-11. Finally, a gene co-expression network was constructed to highlight the regulatory relationships of transporters, TFs, and ROS scavenging genes under salt-stress conditions. This work provides an overview of genome-wide transcriptional analysis of two contrasting rice genotypes in response to salt stress. These findings imply a crucial contribution of quickly transcriptional changes to salt tolerance and provide useful genes for genetic improvement of salt tolerance in rice.

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[1]Comparative Transcriptional Analysis of Two Contrasting Rice Genotypes in Response to Salt Stress. Ye, Xiaoxue,Tie, Weiwei,Ding, Zehong,Hu, Wei,Ye, Xiaoxue,Tie, Weiwei,Ding, Zehong,Hu, Wei,Tie, Weiwei,Ding, Zehong,Hu, Wei,Xu, Jianlong. 2022

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