Effect of UV-C irradiation on stilbene synthase localization in young grape plants

Effect of UV-C irradiation on stilbene synthase localization in young grape plants Stilbene synthase (STS) is a pivotal enzyme that catalyzes the biosynthesis of resveratrol and could be induced by UV-C irradiation. However, at present the effect of UV-C irradiation on tissue and subcellular localization of STS is not studied. In this work, subcellular localization of STS in young grape (Vitis vinifera L. cv. Cabernet Sauvignon) plants exposed to UV-C was examined immunohistochemically using a polyclonal antibody raised against grape berry STS. The immunohistochemical analysis showed that the UV-induced STS occurred in palisade tissues of grape leaves and phloem tissues of grape leaf veins, stems, and roots. At the subcellular level, the enhanced STS stimulated by UV-C light was visualized in the cell walls, chloroplasts (plastids), cytoplasm, and nucleus of the phloem (stems and roots), while only in chloroplasts in mesophyll cells. This distribution pattern of STS arising in response to UV-C irradiation may be closely involved in its defense function, which needs much more in-depth evidence to confirm. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Effect of UV-C irradiation on stilbene synthase localization in young grape plants

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2011 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443711040200
Publisher site
See Article on Publisher Site

Abstract

Stilbene synthase (STS) is a pivotal enzyme that catalyzes the biosynthesis of resveratrol and could be induced by UV-C irradiation. However, at present the effect of UV-C irradiation on tissue and subcellular localization of STS is not studied. In this work, subcellular localization of STS in young grape (Vitis vinifera L. cv. Cabernet Sauvignon) plants exposed to UV-C was examined immunohistochemically using a polyclonal antibody raised against grape berry STS. The immunohistochemical analysis showed that the UV-induced STS occurred in palisade tissues of grape leaves and phloem tissues of grape leaf veins, stems, and roots. At the subcellular level, the enhanced STS stimulated by UV-C light was visualized in the cell walls, chloroplasts (plastids), cytoplasm, and nucleus of the phloem (stems and roots), while only in chloroplasts in mesophyll cells. This distribution pattern of STS arising in response to UV-C irradiation may be closely involved in its defense function, which needs much more in-depth evidence to confirm.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Jun 19, 2011

References

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