EjFWLs are repressors of cell division during early fruit morphogenesis of loquat

文献类型： 外文期刊

第一作者： Su, Wenbing

作者： Su, Wenbing;Chen, Xiuping;Su, Wenbing;Zhang, Ling;Jiang, Yuanyuan;Huang, Tianqi;Yang, Xianghui;Lin, Shunquan;Liu, Yuexue;Su, Wenbing;Wu, Jincheng

作者机构：

关键词： Loquat; FW2.2-like; Fruit size; Cell division; Cell cycle

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

ISSN： 0304-4238

年卷期： 2021 年 287 卷

页码：

收录情况： SCI

摘要： Fruit size varies widely among different loquat species and varieties. While the cell number of fruit is considered as one of the main factors which affect fruit size forming of loquat, the mechanism of variation in fruit size of loquat is still poorly understood. In this work, we aimed to illuminate the functions of EjFWLs in fruit size forming of loquat. Two FWL (tomato FW2.2-like) genes, EjFWL1 and EjFWL2, of loquat were isolated and characterized. Expression analysis showed that transcription levels of both EjFWL1 and EjFWL2 are negatively correlated with that of EjCDKB1;2 in receptacle before bloom. Meanwhile, compared with that in small-fruited loquat varieties, expression of EjFWL1/2 in large-fruited loquat showed a lower level and shorter duration. Ectopic expression of EjFWL1 in tomato inhibited the fruit cell division with reduced ovary and fruit size. Moreover, EjFWLs could interact with EjAGL2 and EjCKII beta, the proteins which may be involved in the regulation of cell division, respectively. Our data suggested that EjFWLs are cell division repressors and function during early stage of fruit enlargement in loquat.

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