Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 60, Issue 44, Pages 11135-11142Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf301936u
Keywords
cell cultures; Vitis vinifera L. cv. Alphonse Lavallee; delta- and epsilon-viniferins; ultrasound sonication; methyl jasmonate; chemical elicitor; physical elicitor
Funding
- Ministry of Agricultural and Forestry Policy (MIPAF), Italy, within the framework of a program on grape quality (VANSUT project)
- University Sapienza of Rome [C26R09X4AK]
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This study examined for the first time the effect of low-energy ultrasound (US), used alone or in combination with methyl jasmonate (MeJA), on viniferin production in cell cultures of Vitis vinifera L. cv Alphonse Lavallee. Cell suspensions were exposed for 2 min to US (power 30, 60, and 90 mW cm(-3)). The highest viniferin production was obtained at 30 mW cm(-3). When sonication was performed twice, the effect on viniferin production was negligible, whereas triple sonication slightly increased production. US treatment at 30 mW cm(-3) for 5 min decreased viniferin production and induced cellular death. The combined use of MeJA and US (2 min) increased the production of delta-viniferin, the dominant stilbene, more than each elicitor used alone. These results suggest that low-energy US, alone and in combination with MeJA, can act as a physical elicitor to stimulate viniferin production in V. vinifera cell cultures.
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