KNOX transcription factor VvHB63 affects grape seed development by interacting with protein VvHB06

文献类型： 外文期刊

第一作者： Yao, Jin

作者： Yao, Jin;Zhang, Songlin;Wu, Na;Li, Xingmei;Guo, Rongrong;Wang, Xiping;Guo, Rongrong;Yao, Jin;Zhang, Songlin;Wu, Na;Li, Xingmei;Wang, Xiping;Ahmad, Bilal;Wu, Jiuyun;Wang, Xiping

作者机构：

关键词： VvHB63; Ovule abortion; ISH; SlTKN1; CRISPR; Cas9

期刊名称：PLANT SCIENCE （ 影响因子：5.2； 五年影响因子：5.7 ）

ISSN： 0168-9452

年卷期： 2023 年 330 卷

页码：

收录情况： SCI

摘要： The fast-growing demand for seedless table grapes has attracted the attention of scientists for the development of new seedless cultivars. Various genes and pathways have been identified which affect seedlessness. However, the detail of the mechanism(s) regulating seedless traits in grape is still unclear, and genes related to seedlessness in grape require further study. Transcriptomic and genomic analyses of Homeobox (HB) transcription factors have suggested the involvement of HB genes, especially of HB-KNOX members, in grape seed development. Here, we functionally characterize VvHB63 gene in grape and report its role in fruit and seed development. VvHB63 showed higher expressions levels in the chalaza and integument of ovules in seedless grapes, than in seeded ones. However, no differences were observed in the sequences of seedless and seeded grape cultivars. In situ hybridization (ISH) analysis showed that VvHB63 gene was expressed in the episperm cells and ovules of 'Thompson Seedless'. Conserved domains KNOX1 and KNOX2 were important for the interaction of VvHB63 with VvHB06. Heterologous over-expression of VvHB63 (35 S::VvHB63-OE) in tomato induced smaller fruits and seeds than in wild type or SlTkn1-KO. The synergistic cooperation between VvHB63 and related proteins play an important role in ovule development.

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