Physiological Role and Molecular Aspects of Grapevine Stilbenic Compounds

Bavaresco, Luigi; Fregoni, Costanza

doi:10.1007/978-94-017-2308-4_6

Cited by 36 publications

(52 citation statements)

References 69 publications

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“…Stilbene synthase, which is a key enzyme in the synthesis of trans-resveratrol and stilbene phytoalexins, is induced in response to fungal elicitors, the oomycete Plasmopara viticola, and the necrotrophic fungal pathogens Botrytis cinerea and Phomopsis viticola in V. vinifera (Melchior and Kindl, 1991;Bavaresco and Fregoni, 2001;Tassoni et al, 2005). In this study, multiple transcripts of stilbene synthase genes were induced in response to the biotrophic E. necator (Figs.…”

Section: Primary Metabolism Is Affected In Pm-inoculated V Viniferamentioning

confidence: 92%

Powdery Mildew Induces Defense-Oriented Reprogramming of the Transcriptome in a Susceptible But Not in a Resistant Grapevine

et al. 2007

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Grapevines exhibit a wide spectrum of resistance to the powdery mildew fungus (PM), Erysiphe necator (Schw.) Burr., but little is known about the transcriptional basis of the defense to PM. Our microscopic observations showed that PM produced less hyphal growth and induced more brown-colored epidermal cells on leaves of PM-resistant Vitis aestivalis 'Norton' than on leaves of PM-susceptible Vitis vinifera 'Cabernet sauvignon'. We found that endogenous salicylic acid levels were higher in V. aestivalis than in V. vinifera in the absence of the fungus and that salicylic acid levels increased in V. vinifera at 120 h postinoculation with PM. To test the hypothesis that gene expression differences would be apparent when V. aestivalis and V. vinifera were mounting a response to PM, we conducted a comprehensive Vitis GeneChip analysis. We examined the transcriptome at 0, 4, 8, 12, 24, and 48 h postinoculation with PM. We found only three PM-responsive transcripts in V. aestivalis and 625 in V. vinifera. There was a significant increase in the abundance of transcripts encoding ENHANCED DISEASE SUSCEPTIBILITY1, mitogen-activated protein kinase kinase, WRKY, PATHOGENESIS-RELATED1, PATHOGENESIS-RELATED10, and stilbene synthase in PM-infected V. vinifera, suggesting an induction of the basal defense response. The overall changes in the PM-responsive V. vinifera transcriptome also indicated a possible reprogramming of metabolism toward the increased synthesis of the secondary metabolites. These results suggested that resistance to PM in V. aestivalis was not associated with overall reprogramming of the transcriptome. However, PM induced defense-oriented transcriptional changes in V. vinifera.

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Section: Primary Metabolism Is Affected In Pm-inoculated V Viniferamentioning

confidence: 92%

Powdery Mildew Induces Defense-Oriented Reprogramming of the Transcriptome in a Susceptible But Not in a Resistant Grapevine

et al. 2007

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“…The interaction between grey mould and stilbene synthesis/degradation was widely studied since 1976 (Bavaresco and Fregoni 2001). Recently Montero et al (2003) assessed trans-resveratrol and ethylene levels after infection with Botrytis cinerea.…”

Section: Botrytis Cinereamentioning

confidence: 99%

“…Review on stilbenes and their occurrence in the Vitaceae was presented by Bavaresco and Fregoni (2001) and updated in this Chapter.…”

Section: Grapevine Induced Stilbenes (Phytoalexins) and Their Biotic mentioning

confidence: 99%

“…The new term classifies 'low molecular weight, antimicrobial compounds that are present in plants before challenge by microorganisms, or are produced after infection solely from pre-existing precursors'. The molecules responsible for triggering plant responses are called elicitors, which can be either biotic or abiotic, according to the previous review of Bavaresco and Fregoni (2001).…”

Section: Grapevine Induced Stilbenes (Phytoalexins) and Their Biotic mentioning

confidence: 99%

“…An extensive review on grape stilbenes was published in the previous edition of this book (Bavaresco and Fregoni 2001). In this chapter, effort has been made to update the review, presenting the state-of the-art in the topic.…”

Section: Introductionmentioning

confidence: 99%

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