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

Autor: Mingzhi Liang, Hao Qu, Jiang Huibing, Yue Liu, Lifei Xia, Chang-Jun Jiang, Sun Yunnan, Linbo Chen
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Hereditas, Vol 156, Iss 1, Pp 1-10 (2019)
Hereditas
ISSN: 1601-5223
DOI: 10.1186/s41065-019-0090-z
Popis: Background The 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. Results In 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. Conclusion The 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.
Databáze: OpenAIRE
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