Transcription Factor MdWRKY32 Participates in Starch–Sugar Metabolism by Binding to the MdBam5 Promoter in Apples During Postharvest Storage

• DOI: 10.1021/acs.jafc.1c03343
• Publication Date: 2021-12-01T16:32:16Z
• Authors: Ang Li; Jing Chen; Qiong Lin; Yaoyao Zhao; Yuquan Duan; Su Chit Wai; Congcong Song; Jinfeng Bi
• Keywords: Reducing sugar; Carbohydrate Metabolism

Starch degradation with fruit ripening is closely related to the aging process and flavor formation in apples. In this study, ethylene, 1-methylcyclopropene (1-MCP), apples treated at different temperatures were used determine key genes of starch-sugar metabolism during storage. Compared 4 °C storage, 20 storage promoted starch sugar accumulation addition, ethylene treatment apples, while 1-MCP showed opposite effects. The expression MdBams indicated crucial role MdBam5 conversion. Transient overexpression significantly reduced content Furthermore, MdWRKY32 directly combined promoter activated expression, which may promote Therefore, it was concluded that be involved regulation postharvest by activating expression.