文献类型： 外文期刊
作者： Su, Wenbing 1 ; Zhang, Ling 2 ; Jiang, Yuanyuan 2 ; Huang, Tianqi 2 ; Chen, Xiuping 1 ; Liu, Yuexue 3 ; Wu, Jincheng 4 ;
作者机构： 1.Fujian Acad Agr Sci, Fujian Breeding Engn Technol Res Ctr Longan & Loq, Fruit Res Inst, Fuzhou 350013, Peoples R China
2.South China Agr Univ, Coll Hort, Key Lab Innovat & Utilizat Hort Crop Resources So, Minist Agr, Guangzhou 510642, Peoples R China
3.Shenyang Agr Univ, Coll Hort, Shenyang 110866, Peoples R China
4.Putian Univ, Key Lab Loquat Germplasm Innovat & Utilizat, Putian 351100, Peoples R China
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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