Induced sulfur metabolism by sulfur dioxide maintains postharvest quality of 'Thompson Seedless' grape through increasing sulfite content

文献类型： 外文期刊

第一作者： Zhang, Zheng

作者： Zhang, Zheng;Wei, Jia;Zhang, Jian;Wu, Bin;Wang, Man

作者机构：

关键词： sulfur dioxide; table grapes; sulfur metabolism; enzyme activity; gene expression

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.639； 五年影响因子：3.803 ）

ISSN： 0022-5142

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收录情况： SCI

摘要： BACKGROUND The commercial preservation of table grapes largely depends on the application of sulfur dioxide (SO2). However, little is known about whether SO2 participates in sulfur metabolism to improve the postharvest quality of table grapes. In this study, the contents of sulfur-containing compounds, activities of enzymes, and expression of genes involved in sulfur metabolism in table grapes (Vitis vinifera cv. Thompson Seedless) were evaluated. RESULTS The results indicated that SO2 treatment maintained the postharvest quality of table grapes. The sulfite content in rachises and berries, but not the sulfate content, increased in response to SO2 treatment. SO2 caused high activities of sulfite reductase, O-acetylserine (thiol)-lyase, and gamma-glutamylcysteine synthetase, thereby increasing the contents of cysteine, hydrogen sulfide, and glutathione in the rachises and berries. The expression of VvSURTL, VvATPS1, VvATPS2, and VvAPR3 decreased in response to SO2 treatment; however, the transcript levels of VvSiR1 and VvOASTL exhibited the opposite tendency. CONCLUSION These findings indicated that the sulfite converted from SO2 participated in sulfur metabolism and maintained the postharvest quality of table grapes by modulating the contents of metabolites, activities of enzymes, and expression of genes related to sulfur metabolism. (c) 2021 Society of Chemical Industry.

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