Comparison of accumulation of stilbene compounds and stilbene related gene expression in two grape berries irradiated with different light sources

• Published in: Horticulture, environment and biotechnology Vol. 56; no. 1; pp. 36 - 43
• Main Authors: Ahn, Soon Young, Kim, Seon Ae, Choi, Seong-Jin, Yun, Hae Keun
• Format: Journal Article
• Language: English
• Published: Korea Korean Society for Horticultural Science 01.02.2015; 한국원예학회
• Subjects: Agriculture; Biomedical and Life Sciences; Life Sciences; Plant Breeding/Biotechnology; Plant Ecology; Plant Physiology; Research Report; 농학; LED; red light; resveratrol; sp; phytochemical
• ISSN: 2211-3452; 2211-3460
• DOI: 10.1007/s13580-015-0045-x

In this study, the accumulation of stilbene compounds and the expression of genes related to their syntheses in ‘Campbell Early’ and ‘Kyoho’ grapes ( Vitis sp.) were investigated by irradiating the harvested berries with four different light sources (white fluorescent and purple, blue, and red LED lights) for 48 hours. The total concentrations of five stilbene derivatives at 24 hours after irradiation differed in response to different light sources and cultivars. The accumulation of stilbenic compounds in the skins of two grape cultivars and the expression of PAL and STS1 genes were mainly induced under red and blue LED lights. The expression of PAL , CHS , CHI , STS1 , STS12 , and ROMT was differently induced in response to irradiation with different light sources in both grape cultivars. The mRNA levels of PAL and STS1 were higher than those of CHS , CHI , STS12 and ROMT in the two grapes berries. Overall, the results of this study indicated that red and blue LED induced the accumulation of stilbene compounds and the expression of genes related to their syntheses in grape berries, suggesting that irradiation with LEDs can be used to induce the accumulation of phytochemicals that have positive impacts on human health via the induction of related genes.