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Transcriptome profiling of the fertile parent and sterile hybrid in tea plant flower buds

文献类型: 外文期刊

作者: Chen, Linbo 1 ; Qu, Hao 1 ; Xia, Lifei 1 ; Liu, Yue 1 ; Jiang, Huibing 1 ; Sun, Yunnan 1 ; Liang, Mingzhi 1 ; Jiang, Chan 1 ;

作者机构: 1.Yunnan Acad Agr Sci, Tea Res Inst, Menghai 666201, Peoples R China

2.Yunnan Prov Key Lab Tea Sci, Menghai 666201, Peoples R China

3.Anhui Agr Univ, State Key Lab Tea Plant Biol & Utilizat, Hefei 230036, Anhui, Peoples R China

关键词: Tea plant; Sterile floral buds; Differentially expressed genes; Auxin

期刊名称:HEREDITAS ( 影响因子:3.271; 五年影响因子:2.807 )

ISSN: 1601-5223

年卷期: 2019 年 156 卷

页码:

收录情况: SCI

摘要: BackgroundThe tea plant is a crucial economic crop. The floral organ development consumes a large amount of nutrients, which affects the leaf yield. To understand the mechanism by which the tea plant produces sterile floral buds, we obtained a sterile tea plant by artificial hybridization. RNA-sequencing based transcriptome analysis was implemented in three samples to determine the differentially expressed genes (DEGs) related to flower development.ResultsIn this study, a total of 1991 DEGs were identified; 1057 genes were up-regulated and 934 genes were down-regulated in sterile hybrid floral buds. These were mainly distributed in the regulation of biological and metabolic processes. Significantly, auxin biosynthesis genes YUCCA, AUX1 and PIN were dramatically down-regulated, and ARF gene was up-regulated in the sterile hybrid floral buds, and flower development-related genes AP1, AP2 and SPL were changed. A total of 12 energy transfer-related genes were significantly decreased. Furthermore, the expression of 11 transcription factor genes was significantly different.ConclusionThe transcriptome analysis suggested that the production of sterile floral buds is a complex bioprocess, and that low auxin-related gene levels result in the formation of sterile floral buds in the tea plant.

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