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Hormonal and Transcriptomic Analysis Reveal Gibberellin-Induced Fruit Set in Jujube (Ziziphus jujuba Mill.)

文献类型： 外文期刊

作者： Fan, Dingyu 1 ; Yang, Lei 2 ; Jin, Juan 2 ; Hao, Qing 2 ; Abudoukayoumu, Ayimaiti 1 ; Zhao, Jingtong 1 ; Liao, Kang 1 ;

作者机构： 1.Xinjiang Agr Univ, Coll Forestry & Hort, 311,Nongda East Rd, Xinjiang 830052, Peoples R China

2.Xinjiang Acad Agr Sci, Inst Hort Crops, 403,Nanchang Rd, Xinjiang 830091, Peoples R China

关键词： Jujube flowers; Gibberellin; Phytohormone; Fruit set; Hormones

期刊名称：PLANT MOLECULAR BIOLOGY REPORTER （ 影响因子：1.595； 五年影响因子：2.042 ）

ISSN： 0735-9640

年卷期：

页码：

收录情况： SCI

摘要： Gibberellin (GA) is a crucial hormone that drives parthenocarpy and fruit set progression. However, it remains unknown whether GA participates in the parthenocarpy and fruit set in jujube (Ziziphus jujuba Mill.). In this study, we observed the morphology and effect of parthenocarpy in jujube flowers with GA3 treatment. Liquid chromatography tandem-mass spectrometry analysis was performed to detect the levels of endogenous hormones in sepal spread (H), filament wilting (S), and ovary inflation (G) stages of jujube flowers, and the GA3-induced differentially expressed genes (DEGs) were identified by RNA sequencing. We found that GA3 improved jujube parthenocarpic fruit set and that the morphology and size of flowers after GA3 treatment were superior to those in control flowers. GA3 treatment increased the levels of gibberellin, ABA, auxins, and cytokinins in jujube flowers. RNA sequencing revealed that GA3-induced DEGs expressed in the H, S, and G stages. Functional and pathway analyses demonstrated that these DEGs belong to plant development, including glucan metabolic processes and plant hormone signal transduction. Moreover, quantitative reverse transcription polymerase chain reaction validated the reliability of the sequencing data. Fruit set-related genes were significantly induced in the H, S, and G stages of jujube flowers. Our study confirmed that GA3 induced phytohormone production and fruit set by regulating the expression of endogenous hormones and related genes.

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