Reduced expression of a subunit gene of sucrose non-fermenting 1 related kinase, PpSnRK1 beta gamma, confers flat fruit abortion in peach by regulating sugar and starch metabolism

文献类型： 外文期刊

第一作者： Guo, Jian

作者： Guo, Jian;Cao, Ke;Yao, Jia-Long;Li, Yong;Zhu, Gengrui;Fang, Weichao;Chen, Changwen;Wang, Xinwei;Wu, Jinlong;Wang, Lirong;Guo, Jian;Guo, Wenwu;Yao, Jia-Long;Deng, Cecilia

作者机构：

关键词： Flat peach; Fruit abortion; Sugar; Starch; Carbohydrate

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）

ISSN： 1471-2229

年卷期： 2021 年 21 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundFruit abortion is a major limiting factor for fruit production. In flat peach, fruit abortion is present in the whole tree of some accessions during early fruit development. However, the physiological factors and genetic mechanism underlying flat fruit abortion remain largely elusive.ResultsIn this study, we have revealed that the fertilization process was accomplished and the reduction of sucrose and starch contents might result in flat fruit abortion. By combining association and gene expression analysis, a key candidate gene, PpSnRK1 beta gamma, was identified. A 1.67-Mb inversion co-segregated with flat fruit shape altered the promoter activity of PpSnRK1 beta gamma, resulting in much lower expression in aborting flat peach. Ectopic transformation in tomato and transient overexpression in peach fruit have shown that PpSnRK1 beta gamma could increase sugar and starch contents. Comparative transcriptome analysis further confirmed that PpSnRK1 beta gamma participated in carbohydrate metabolism. Subcellular localization found that PpSnRK1 beta gamma was located in nucleus.ConclusionsThis study provides a possible reason for flat fruit abortion and identified a critical candidate gene, PpSnRK1 beta gamma, that might be responsible for flat fruit abortion in peach. The results will provide great help in peach breeding and facilitate gene identification for fruit abortion in other plant species.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序