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Grimmig, B. ; Schubert, R. ; Fischer, R.* ; Hain, R.* ; Schreier, P.H.* ; Betz, C. ; Langebartels, C. ; Ernst, D. ; Sandermann, H.

Ozone- and ethylene-induced regulation of a grapevine resveratrol synthase promoter in transgenic tobacco.

Acta Physiol. Plant. 19, 467-474 (1997)

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Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.

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Stilbene synthases (STSs) are enzymes that play a critical role in the biosynthesis of stilbene, phytoalexins in a small number of unrelated plant species, and are induced by various biotic and abiotic stressors like pathogen attack, UV-irradiation or ozone exposure. To investigate the molecular basis for ozone-induced plant stress responses, we have examined the promoter of the grapevine resveratrol synthase (Vst1). In this report we summarize the influence of ozone on gene regulation. In transgenic tobacco a chimeric gene construct, containing the Vst1 promoter combined with the β-glucuronidase (GUS) reporter gene, is rapidly induced by ozone (0.1 µl·l⁻¹, 12 h). The same construct is also strongly induced by ethylene (20 µl·l⁻¹, 12 h). Promoter deletion analysis of the 5′ flanking sequence identified a positive regulatory element between −430 bp and −280 bp. This region contains ethylene-responsive enhancer elements, as well as an elicitor-responsive sequence in inverse orientation.

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