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Transcriptional and post-transcriptional regulation of ethylene biosynthesis by exogenous acetylsalicylic acid in kiwifruit

文献类型： 外文期刊

作者： Wang, Jian 1 ; Liu, Xiao-fen 1 ; Zhang, Hui-qin 3 ; Allan, Andrew C. 4 ; Wang, Wen-qiu 1 ; Yin, Xue-ren 1 ;

作者机构： 1.Zhejiang Univ, Coll Agr & Biotechnol, Zhejiang Prov Key Lab Hort Plant Integrat Biol, Zijingang Campus, Hangzhou 310058, Zhejiang, Peoples R China

2.Zhejiang Univ, State Agr Minist, Lab Hort Plant Growth Dev & Qual Improvement, Zijingang Campus, Hangzhou 310058, Zhejiang, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Hort, Hangzhou 310021, Zhejiang, Peoples R China

4.New Zealand Inst Plant & Food Res Ltd, Private Bag 92169, Auckland, New Zealand

5.Univ Auckland, Sch Biol Sci, Private Bag 92019, Auckland, New Zealand

期刊名称：HORTICULTURE RESEARCH （ 影响因子：7.291； 五年影响因子：7.487 ）

ISSN： 2662-6810

年卷期： 2022 年 9 卷

页码：

收录情况： SCI

摘要： Levels of ethylene, implicated in the induction of fruit ripening in a diverse array of plants, are influenced by genetic and environmental factors, such as other plant hormones. Among these, salicylic acid (SA) and its derivative, acetylsalicylic acid (ASA), have been demonstrated to inhibit ethylene biosynthesis in fruit, yet the underlying regulatory mechanisms remain elusive. Here, we showed that treatment with exogenous ASA dramatically reduced ethylene production, as well as activities of ACC synthase (ACS) and ACC oxidase (ACO), in kiwifruit tissues. Comparative transcriptome analysis indicated the differential expression of ethylene biosynthetic genes (AdACS1/2 and AdACO5). A screen of transcription factors indicated that AdERF105L and AdWRKY29 were ASA-responsive regulators of AdACS1/2 and AdACO5, respectively. In addition to these genes, AdACS3 and AdACO3 were abundantly expressed in both ASA-treated and control tissues. AdACS3 protein was phosphorylated and stabilized by AdMPK16, a mitogen-activated protein kinase, while AdACO3 activity was enhanced by AdAP, an aspartic peptidase. Exogenous ASA downregulated AdMPK16 and AdAP, thereby influencing ethylene biosynthesis at a post-transcriptional level. These findings led us to propose a multidimensional system for inhibition of ethylene biosynthesis by ASA, inducing differential expression of some ethylene biosynthesis genes, as well as differential effects on protein activity on other targets.

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