γ-Aminobutyric Acid Treatment Suppresses Ethylene Biosynthesis in Actinidia aruguta during Postharvest Storage

• DOI: 10.7235/hort.20240046
• Publication Date: 2024-05-29T05:46:35Z
• Authors: Qi Zhu; Xu Li; Siyi Chen; John Kojo Ahiakpa; Chao Chen; Wona Ding; Haiqiang Dong

γ-aminobutyric acid (GABA) is known to exert significant influence on plant development. Nevertheless, there a limited study the modulation of kiwifruit ripening through use GABA. In this study, we conducted an assessment physicochemical properties and gene expression patterns associated with in hardy (Actinidia aruguta). Specifically, result showed that application exogenous GABA had positive impact quality. Additionally, it was observed treatment led decrease respiration rate ethylene production. Furthermore, enzyme activities 1-aminocyclopropane-1-carboxylate (ACC) oxidase (ACO) ACC synthase (ACS) were reduced as treatment. Conversely, overexpression AaGAD1 or AaGAD4 gene, which plays role biosynthesis GABA, resulted inhibition production by decreasing levels AaACO1, AaACO3, AaACS1, AaACS2. The silencing opposite effect. Our findings provide evidence has potential enhance storage quality extend shelf life kiwifruit. Thus, confirms involvement molecular-level regulation