Green leaf volatiles affect the resveratrol production stimulated by ultraviolet C irradiation in grape leaf discs

Authors

  • I. Komai
  • K. Boushita
  • S. Shiozaki

DOI:

https://doi.org/10.5073/vitis.2014.53.133-137

Keywords:

green leaf volatiles, grape leaf discs, resveratrol, trans-2-hexenal, UV irradiation

Abstract

The effect of green leaf volatiles (GLVs; cis-3-hexenol and trans-2-hexenal) on the resveratrol production stimulated and nonstimulated by ultraviolet C (UV-C) irradiation was elucidated in the leaf discs of ‘Delaware’ grapes. Each GLV treatment slightly reduced resveratrol levels in the leaf discs. Pretreatment with cis-3-hexenol inhibited the resveratrol accumulation stimulated by UV-C irradiation irrespective of the concentration. On the other hand, pretreatment with trans-2-hexenal at low concentration augmented the levels of resveratrol increased by UV-C irradiation. These results suggest that trans-2-hexenal had a priming effect on the resveratrol accumulation stimulated by UV-C irradiation in grape leaf discs. The highest priming effect of trans-2-hexenal was found at 2.58 μM for 24 h exposure. Exposure times, from 2 to 24 h, of 4.3 μM trans-2-hexenal did not change the priming effect.

 

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Published

2015-03-24

Issue

Vol. 53 No. 3 (2014): Vitis

Section

Article

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