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Regulatory role of AdABI5 transcription factor in enhancing aroma biosynthesis in cold-stored kiwifruit

文献类型： 外文期刊

作者： Han, Xueyuan 1 ; Zhang, Ying 1 ; Cao, Chenhao 1 ; Xiao, Chaogeng 2 ; Lu, Wenjing 2 ; Dong, Lijia 1 ; Zhu, Huangjin 1 ; Fu, Jiayao 1 ;

作者机构： 1.Shaoxing Univ, Sch Life & Environm Sci, Shaoxing 312000, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Food Sci, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China

关键词： ABI5; Aroma; Kiwifruit; Cold storage; Regulatory mechanism

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.6； 五年影响因子：6.9 ）

ISSN： 0023-6438

年卷期： 2025 年 215 卷

页码：

收录情况： SCI

摘要： Cold storage is an effective method to extend the shelf life of kiwifruit, but it often leads to a significant reduction in fruit aroma, adversely affecting the quality and marketability of the fruit. The regulatory mechanisms governing aroma synthesis in cold-stored kiwifruit remain unclear. This study identifies transcription factor (TF) AdABI5 as a key regulator of aroma biosynthesis in kiwifruit subjected to cold storage. Transient overexpression of AdABI5 in kiwifruit cubes resulted in increased aroma accumulation, while transient gene silencing had the opposite effect. According to DNA affinity purification sequencing (DAP-seq), AdABI5 bound to motifs associated with genes involved in the biosynthesis and degradation of fatty acid, and amino acid metabolism-pathways intensely linked to volatile compound biosynthesis. Further combining with RNA sequencing (RNA-seq), 428 overlap genes potentially regulated by AdABI5 were determined. Enrichment of these potential target genes can be observed in processes associated with abiotic stress response, lipid response, alcohol response, and abscisic acid (ABA)-activated signaling. Besides, five motifs in promoter region of overlap genes ( AKR4, 13S-LOX, 9S- LOX, ADH1, ALDH) involved in aroma biosynthesis were verified the binding with AdABI5 through EMSA analysis. This study elucidates a potential regulatory mechanism involving the AdABI5 in aroma biosynthesis of cold-stored kiwifruit.

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