| Autor: |
Tomohiro Tsurumoto, Yasuo Fujikawa, Yushi Onoda, Masahiro Kamimori, Kazuya Hiramatsu, Hideo Tanimoto, Daisaku Ohta, Atsushi Okazawa |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Bioscience, Biotechnology, and Biochemistry. 86:502-508 |
| ISSN: |
1347-6947 |
| DOI: |
10.1093/bbb/zbac014 |
| Popis: |
UV-C irradiation increases resveratrol content in grape skins, but it reaches a maximum at a certain UV-C dose. In contrast, UV-B has a weak resveratrol-enhancing effect at low doses, but it has not been investigated at high doses. In this study, we investigated the effect of high-dose UV-B on resveratrol contents in grape skins. Irradiation of Muscat Bailey A with 290 nm UV-B LED at 22 500 and 225 000 µmol m−2 increased the resveratrol contents in the grape skins by 2.1- and 9.0-fold, respectively, without significant increases in other phenolic compounds. The effect was also confirmed for 2 other cultivars: Shine Muscat and Delaware. Transcriptome analysis of the grape skins of Muscat Bailey A immediately after irradiation with UV-B at 225 000 µmol m−2 showed that genes related to biotic and abiotic stresses were upregulated. Hence, it was suggested that high-dose UV-B irradiation induces a stress response and specifically activates resveratrol biosynthesis. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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