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Global identification of full-length cassava lncRNAs unveils the role of cold-responsive intergenic lncRNA 1 in cold stress response

文献类型： 外文期刊

作者： Li, Shuxia 1 ; Cheng, Zhihao 2 ; Dong, Shiman 1 ; Li, Zhibo 1 ; Zou, Liangping 1 ; Zhao, Pingjuan 1 ; Guo, Xin 1 ; Bao, Yan 4 ; Wang, Wenquan 3 ; Peng, Ming 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Haikou 571101, Hainan, Peoples R China

2.Chinese Acad Trop Agr Sci, Haikou Expt Stn, Haikou, Hainan, Peoples R China

3.Hainan Univ, Coll Trop Crops, Haikou 570228, Hainan, Peoples R China

4.Shanghai Jiao Tong Univ, Joint Ctr Single Cell Biol, Sch Agr & Biol, Shanghai 200240, Peoples R China

5.Shanghai Jiao Tong Univ, Shanghai Collaborat Innovat Ctr Agriseeds, Sch Agr & Biol, Shanghai, Peoples R China

关键词： cold shock protein; CRIR1; Iso-seq; long noncoding RNA; RNA-seq

期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.947； 五年影响因子：8.452 ）

ISSN： 0140-7791

年卷期： 2022 年 45 卷 2 期

页码：

收录情况： SCI

摘要： Long noncoding RNAs (lncRNAs) have been considered to be important regulators of gene expression in a range of biological processes in plants. A large number of lncRNAs have been identified in plants. However, most of their biological functions still remain to be determined. Here, we identified a total of 3004 lncRNAs in cassava under normal or cold-treated conditions from Iso-seq data. We further characterized a cold-responsive intergenic lncRNA 1 (CRIR1) as a novel positive regulator of the plant response to cold stress. CRIR1 can be significantly induced by cold treatment. Ectopic expression of CRIR1 in cassava enhanced the cold tolerance of transgenic plants. Transcriptome analysis demonstrated that CRIR1 regulated a range of cold stress-related genes in a CBF-independent pathway. We further found that CRIR1 RNA can interact with cassava cold shock protein 5 (MeCSP5), which acts as an RNA chaperone, indicating that CRIR1 may recruit MeCSP5 to improve the translation efficiency of messenger RNA. In summary, our study extends the repertoire of lncRNAs in plants as well as their role in cold stress responses. Moreover, it reveals a mechanism by which CRIR1 affected cold stress response by modulating the expression of stress-responsive genes and increasing their translational yield.

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