Integrated transcriptome and proteome analysis provides insights into the mechanism of cytoplasmic male sterility (CMS) in tobacco (Nicotiana tabacum L.)

被引:3
作者
Mo, Zejun [1 ,3 ]
Ke, Yuzhou [2 ,3 ]
Huang, Ying [2 ,3 ]
Duan, Lili [1 ,3 ]
Wang, Pingsong [1 ,3 ]
Luo, Wen [2 ,3 ]
Que, Yuanhui [2 ,3 ]
Pi, Kai [2 ,3 ]
Zeng, Shuaibo [2 ,3 ]
Liu, Renxiang [2 ,3 ,4 ]
机构
[1] Guizhou Univ, Coll Agr, Guiyang, Peoples R China
[2] Guizhou Univ, Coll Tobacco, Guiyang, Peoples R China
[3] Key Lab Tobacco Qual Guizhou Prov, Guiyang, Peoples R China
[4] Guizhou Univ, Guiyang, Guizhou, Peoples R China
基金
美国国家科学基金会;
关键词
Nicotiana tabacum L; Cytoplasmic male sterility; Transcriptomics; Proteomics; LIPID TRANSFER PROTEIN; ANTHER DEVELOPMENT; TAPETUM; POLLEN; MITOCHONDRIA; FERTILITY; MAIZE;
D O I
10.1016/j.jprot.2023.104825
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Cytoplasmic male sterility (CMS) is critical in maximizing crop yield and quality by utilizing tobacco heterosis. However, the mechanism of tobacco CMS formation remains unknown. Using paraffin section observation, transcriptome sequencing, and TMT proteomic analysis, this study describes the differences in expression profiles in morphology, transcription, and translation between the sua-CMS tobacco line (MSYY87) and its corresponding maintainer line (YY87). According to the microspore morphology, MSYY87 began to exhibit abnormal micro -spore development during the early stages of germination and differentiation (androgynous primordium dif-ferentiation stage). According to transcriptomic and proteomic analyses, 17 genes/proteins involved in lipid transport/binding and phenylpropane metabolism were significantly down-regulated at both the mRNA and protein levels. Through further analysis, we identified some key genes that may be involved in tobacco male sterility, including beta-GLU related to energy metabolism, 4CL and bHLHs related to anther wall formation, nsLTPs related to pollen germination and anther cuticle, and bHLHs related to pollen tapetum degradation. We speculate that the down-regulation of these genes affects the normal physiological metabolism, making tobacco plants show male sterility.Significance: Cytoplasmic male sterility (CMS) plays a vital role in utilizing tobacco heterosis and enhancing crop yield and quality. We observed paraffin sections and conducted transcriptome sequencing and mitochondrial proteomics to examine the tobacco CMS line Yunyan 87 (MSYY87) and its maintainer line Yunyan 87 (YY87). The down-regulation expression of beta-GLU resulted in insufficient ATP supply, which resulted in disordered en-ergy metabolism. The down-regulation expression of 4CL, nsLTPs and bHLHs may affect the formation of anther wall and anther cuticle, pollen germination, as well as the degradation of pollen tapetum. These various abnormal physiological processes, the male sterility of tobacco is finally caused. The findings shed light on the molecular mechanisms of tobacco CMS and serve as a model for fertility research in other flowering plants.
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页数:12
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