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Transcriptome analysis reveals potential genes associated with plant height in rice br

文献类型： 外文期刊

作者： Chen, Can 1 ; Feng, Rui 1 ; Zhang, Zongqiong 1 ; Xia, Xiuzhong 1 ; Nong, Baoxuan 1 ; Zeng, Yu 1 ; Guo, Hui 1 ; Yang, Xinghai 1 ; LI, Danting 1 ;

作者机构： 1.Guangxi Acad Agr Sci, Rice Res Inst, Guangxi Key Lab Rice Genet & Breeding, Nanning 530007, Peoples R China

关键词： Rice; Plant height; Transcriptome; Weighted gene co-expression network analysis; Differentially expressed gene

期刊名称：BIOCELL （ 影响因子：1.2； 五年影响因子：1.1 ）

ISSN： 0327-9545

年卷期： 2023 年 47 卷 2 期

页码：

收录情况： SCI

摘要： Plant height (PH) is a complex trait regulated by the environment and multiple genes. PH directly affects cropyield, harvest index, and lodging resistance. From plant dwarf mutants, many genes related to PH have been identified anddescribed. Nonetheless, the molecular mechanism of height regulation in high-culm rice mutants has not been wellstudied. By using transcriptome and weighted gene co-expression network analysis (WGCNA), we identified thedifferentially expressed genes (DEGs) between high-culm rice mutants (MUT) and wild-type (WT) and explored thekey pathways and potential candidate genes involved in PH regulation. Transcriptome analysis identified a total of2,184 DEGs, of which 1,317 were identified at the jointing stage and 1,512 were identified at the heading stage. KyotoEncyclopedia of Genes and Genomes enrichment showed that the enrichment pathways were mainly involved inplant hormone signal transduction, ABC transportation, and steroid hormone biosynthesis. Among these metabolicpathways,LOC_Os05g43910andLOC_Os01g35030were auxin (IAA)-related genes, up-regulated in MUT andLOC_Os02g08500(LEPTO1),LOC_Os11g04720, andLOC_Os12g04500were cytokinin (CK)-related genes, down-regulated in MUT. The WGCNA identified four modules (light cyan, dark grey, grey, and pale turquoise) closelyrelated to PH, and seven key genes were screened from these modules, of which two were up-regulated cell wall-related genes (LOC_Os01g26174(OsWAK5),LOC_Os06g05050) in MUT, and one gibberellic acid (GA) gene(LOC_Os06g37364, OsKO2) was also up-regulated. These genes might be closely related to PH regulation. Thesefindings help us better understand the transcriptional regulation of rice plant growth and development and provide atheoretical basis for mapping and cloning the PH regulatory genes.

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