Tomato DC1 domain protein SlCHP16 interacts with the 14-3-3 protein TFT12 to regulate flower development
文献类型： 外文期刊
作者： Li, Guobin 1 ; Wang, Jiafa 1 ; Xiao, Licheng 2 ; Zhang, Chunli 2 ; Zhang, Dedi 2 ; Ai, Guo 2 ; Yao, Minghua 4 ; Li, Changxing 2 ; Hong, Zonglie 5 ; Ye, Zhibiao 2 ; Zhang, Junhong 2 ;
作者机构： 1.Northwest A&F Univ, Coll Hort, Yangling 712100, Shaanxi, Peoples R China
2.Huazhong Agr Univ, Coll Hort & Forestry Sci, Natl Key Lab Germplasm Innovat & Utilizat Crops, Wuhan 430070, Peoples R China
3.Minist Agr & Rural Affairs, Key Lab Urban Agr Cent China, Wuhan 430070, Peoples R China
4.Hubei Acad Agr Sci, Ind Crops Inst, Wuhan, Peoples R China
5.Univ Idaho, Dept Plant Sci, Moscow, ID 83844 USA
6.Huazhong Agr Univ, Hort & Forestry Sci Coll, Minist Educ, Key Lab Hort Plant Biol, Wuhan 430070, Peoples R China
关键词： Flower developmental; DC1 domain protein; 14-3-3 protein; Protein dimerization; SlCHP16; TFT12; Tomato (Solanum lycopersicum. L)
期刊名称：PLANT SCIENCE （ 影响因子：4.1； 五年影响因子：5.1 ）
ISSN： 0168-9452
年卷期： 2025 年 355 卷
页码：
收录情况： SCI
摘要： Flower development is of great significance for plant reproductive growth, but the molecular mechanisms underlying flower development remain to be fully understood. In this study, a tomato (Solanum lycopersicum L.) Divergent C1 (DC1) domain protein SlCHP16 was identified as a negative regulator of flower development. Overexpression of SlCHP16 led to the delay of flower bud development and failure of flowers to blossom and bear fruits. Conversely, down-regulation of SlCHP16 transcripts, via RNA interference (RNAi), led to formation of larger flowers in transgenic tomato plants. In SlCHP16-overexpressing plants, floral primordia and floral organs were initiated normally, but their subsequent growth and development were severely arrested. Transcriptome analysis showed that this arrest was associated with the changes in expression levels of a large number of genes involved in cell division and organ development. Tomato 14-3-3 protein 12 (TFT12) was identified as an interacting protein of SlCHP16 by tandem mass spectrometry, and its overexpression in tomato plants led to the formation of enlarged flowers. The presence of SlCHP16 disturbed the stability and homodimerization of TFT12 in plant cells. The results of this study demonstrate an inhibitory role of SlCHP16 in flower development in tomato by interaction with the 14-3-3 protein TFT12. This work provides new insights into the mechanisms that control development of floral organs.
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