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LncRNA expression analysis by comparative transcriptomics among closely related poplars and their regulatory roles in response to salt stress

文献类型： 外文期刊

作者： Li, Guiting 1 ; Chen, Qingyuan 1 ; Bai, Qiuxian 1 ; Feng, Yannan 1 ; Mao, Kaili 1 ; Yang, Mengran 1 ; He, Ling 1 ; Liu, Meijun 1 ; Liu, Jianquan 1 ; Wan, Dongshi 1 ;

作者机构： 1.Lanzhou Univ, Coll Ecol, State Key Lab Grassland Agroecosyst, 222 South Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China

2.Henan Acad Agr Sci, Henan Sesame Res Ctr, 116 Huayuan Rd, Zhengzhou 450002, Henan, Peoples R China

3.Ningxia Med Univ, Coll Pharm, Ningxia Collaborat Innovat Ctr Reg Characterist Tr, 1160 Shengli Rd, Yinchuan 750004, Ningxia, Peoples R China

关键词： lncERF024; lncRNA divergence; Populus; RNA pull-down; salt resistance

期刊名称：TREE PHYSIOLOGY （ 影响因子：4.0； 五年影响因子：4.7 ）

ISSN： 0829-318X

年卷期： 2023 年 43 卷 7 期

页码：

收录情况： SCI

摘要： Long noncoding ribonucleic acids (lncRNAs) play crucial roles in regulating key biological processes; however, our knowledge of lncRNAs' roles in plant adaptive evolution is still limited. Here, we determined the divergence of conserved lncRNAs in closely related poplar species that were either tolerant or sensitive to salt stress by comparative transcriptome analysis. Among the 34,363 identified lncRNAs, similar to 3% were shared among poplar species with conserved sequences but diversified in their function, copy number, originating genomic region and expression patterns. Further cluster analysis revealed that the conserved lncRNAs showed more similar expression patterns within salt-tolerant poplars (Populus euphratica and P. pruinosa) than between salt-tolerant and salt-sensitive poplars. Among these lncRNAs, the antisense lncRNA lncERF024 was induced by salt and the differentiated expression between salt-sensitive and salt-tolerant poplars. The overexpression of lncERF024 in P. alba var. pyramidalis enhanced poplar tolerance to salt stress. Furthermore, RNA pull-down and RNA-seq analysis showed that numerous candidate genes or proteins associated with stress response and photosynthesis might be involved in salt resistance in PeulncERF024-OE poplars. Altogether, our study provided a novel insight into how the diversification of lncRNA expression contributes to plant adaptation traits and showed that lncERF024 may be involved in the regulation of both gene expression and protein function conferring salt tolerance in Populus.

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