{"title":"DkGASA4 plays a role in the postharvest softening of persimmon fruit regulated by gibberellin.","authors":"Ceng-Xi Xiong, Yi-Hang Zhang, Yi-Min Wang, Shen-Yue Xie, Hao-Tian Wu, Hao-Miao Ding, Wei Chen, Li-Yu Shi, Zhen-Feng Yang, Wei Wu","doi":"10.1016/j.plaphy.2025.109509","DOIUrl":null,"url":null,"abstract":"<p><p>Gibberellin (GA) is one of the crucial plant hormones involved in fruit ripening regulation. GASA genes, which respond to GA and encode cysteine-rich peptides, are prevalent in plants. While the GASA gene family has been identified in various plants, its role in persimmon fruit ripening remains unclear. In this study, the GASA genes of persimmon were identified and analyzed. We found that gibberellin treatment suppresses the expression of the DkGASA4. Additionally, through dual-luciferase and yeast two-hybrid assays, we discovered that DkGASA4 interacts with DkNAC9 to synergistically activate the transcription of the cell wall degradation gene DkEGase1. This study highlights the significant regulatory function of DkGASA4 in persimmon fruit ripening and softening.</p>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"220 ","pages":"109509"},"PeriodicalIF":6.1000,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Physiology and Biochemistry","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1016/j.plaphy.2025.109509","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Gibberellin (GA) is one of the crucial plant hormones involved in fruit ripening regulation. GASA genes, which respond to GA and encode cysteine-rich peptides, are prevalent in plants. While the GASA gene family has been identified in various plants, its role in persimmon fruit ripening remains unclear. In this study, the GASA genes of persimmon were identified and analyzed. We found that gibberellin treatment suppresses the expression of the DkGASA4. Additionally, through dual-luciferase and yeast two-hybrid assays, we discovered that DkGASA4 interacts with DkNAC9 to synergistically activate the transcription of the cell wall degradation gene DkEGase1. This study highlights the significant regulatory function of DkGASA4 in persimmon fruit ripening and softening.
期刊介绍：
Plant Physiology and Biochemistry publishes original theoretical, experimental and technical contributions in the various fields of plant physiology (biochemistry, physiology, structure, genetics, plant-microbe interactions, etc.) at diverse levels of integration (molecular, subcellular, cellular, organ, whole plant, environmental). Opinions expressed in the journal are the sole responsibility of the authors and publication does not imply the editors'' agreement.
Manuscripts describing molecular-genetic and/or gene expression data that are not integrated with biochemical analysis and/or actual measurements of plant physiological processes are not suitable for PPB. Also "Omics" studies (transcriptomics, proteomics, metabolomics, etc.) reporting descriptive analysis without an element of functional validation assays, will not be considered. Similarly, applied agronomic or phytochemical studies that generate no new, fundamental insights in plant physiological and/or biochemical processes are not suitable for publication in PPB.
Plant Physiology and Biochemistry publishes several types of articles: Reviews, Papers and Short Papers. Articles for Reviews are either invited by the editor or proposed by the authors for the editor''s prior agreement. Reviews should not exceed 40 typewritten pages and Short Papers no more than approximately 8 typewritten pages. The fundamental character of Plant Physiology and Biochemistry remains that of a journal for original results.
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