Comparative transcriptome analysis provides insight into the important pathways and key genes related to the pollen abortion in the thermo-sensitive genic male sterile line 373S in Brassica napus L.
文献类型： 外文期刊
作者： Sun, Yanyan 1 ; Zhang, Dongsuo 1 ; Dong, Hui 1 ; Wang, Zhenzhen 1 ; Wang, Jing 1 ; Lv, Huijie 1 ; Guo, Yuan 1 ; Hu, Shengwu 1 ;
作者机构： 1.Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China
3.Jilin Acad Agr Sci, Soybean Res Inst, Changchun 130033, Peoples R China
关键词： Brassica napus L; Thermo-sensitive genic male sterility; RNA-sequencing; Cellular events; Differentially expressed genes
期刊名称：FUNCTIONAL & INTEGRATIVE GENOMICS （ 影响因子：2.9； 五年影响因子：3.3 ）
ISSN： 1438-793X
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： The thermo-sensitive genic male sterility (TGMS) system plays a key role in the production of two-line hybrids in rapeseed (Brassica napus). To uncover key cellular events and genetic regulation associated with TGMS, a combined study using cytological methods and RNA-sequencing analysis was conducted for the rapeseed TGMS line 373S. Cytological studies showed that microspore cytoplasm of 373S plants was condensed, the microspore nucleus was degraded at an early stage, the exine was irregular, and the tapetum developed abnormally, eventually leading to male sterility. RNA-sequencing analysis identified 430 differentially expressed genes (298 upregulated and 132 downregulated) between the fertile and sterile samples. Gene ontology analysis demonstrated that the most highly represented biological processes included sporopollenin biosynthetic process, pollen exine formation, and extracellular matrix assembly. Kyoto encyclopedia of genes and genomes analysis indicated that the enriched pathways included amino acid metabolism, carbohydrate metabolism, and lipid metabolism. Moreover, 26 transcript factors were identified, which may be associated with abnormal tapetum degeneration and exine formation. Subsequently, 19 key genes were selected, which are considered to regulate pollen development and even participate in pollen exine formation. Our results will provide important insight into the molecular mechanisms underlying TGMS in rapeseed.
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