期刊
FOOD CHEMISTRY
卷 363, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.130288
关键词
UV-C; Grape; Waste berries; Stilbene; Transcriptome
资金
- National Natural Science Foundation of China [32001990]
- Doctoral Research Fund of Northwest AF University [2452020049, 2452020048]
- Ningxia Hui Autonomous Region Key RD Program [2020BCF01003]
- Shaanxi Province Innovation Capability Support Program Project [2020TD047]
This study investigated the effects of UV-C treatment on grape berries, showing that UV-C can promote the accumulation of phenolic components in grapes, thereby enhancing the application value of waste grapes. UV-C treatment at different developmental stages led to changes in grape berry appearance and sugar content, with the most significant effects seen in the veraison stage. UV-C also upregulated genes related to transcription factors, protein modification, and various plant hormones, suggesting its potential for improving the nutritional quality of grapes.
Table grape is a popular fruit worldwide. The quality of the appearance of table grapes directly affects their commercial value. Table grape bunches are usually carefully managed during production. At different developmental stages, a large number of grape berries are pruned as waste for commercial appearance, which leads to wasted resources. Ultraviolet-C (UV-C) can regulate the accumulation of secondary metabolites in fruits. In this study, metabolomic profile was combined with transcriptomic analysis technology to explore the value of UV-C in improving the utilization of waste grapes. The berries of the 'Jumeigui' grape were subjected to UV-C radiation treatment in the green-berry stage, veraison stage, and maturation stage. The results showed that UV-C could brown grape berries and decrease their sugar content at different developmental stages. Compared with other samples, those treated with UV-C in the veraison stage had the most upregulated metabolites, while samples in the green-berry stage had the most down-regulated metabolites. UV-C promoted the accumulation of stilbenes and some flavonoids in the berries at each developmental stage (especially at the green-berry and veraison stages). Compared with other stages, UV-C treatment during the veraison stage led to the highest number of upregulated genes related to transcription factors, protein modification, indole-3-acetic acid (IAA), abscisic acid (ABA), gibberellin acid (GA), receptor kinases, and Ascorbic acid/Glutathione (Ascorb/Gluath). UVC might promote the accumulation of phenolic components by upregulating the expression of their biosynthesis related genes. UV-C may be an effective in vitro approach for improving the application value of waste grape berries by enhancing the accumulation of the nutritious phenolic components.
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