T-resveratrol accumulation and polygalacturonase inhibition during infection of grape berries by Botrytis cinerea

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dc.authorscopusid6507892141
dc.authorscopusid7006798815
dc.authorscopusid37021602200
dc.authorscopusid16306574700
dc.authorscopusid6603831098
dc.authorscopusid6701589609
dc.authorscopusid6603227931
dc.contributor.authorKöycü, Nagehan Desen
dc.contributor.authorÖzer, Nuray
dc.contributor.authorMartignoni, D.
dc.contributor.authorAleandri, M.P.
dc.contributor.authorTimperio, A.
dc.contributor.authorMagro, P.
dc.contributor.authorChilosi, G.
dc.date.accessioned2022-05-11T14:43:31Z
dc.date.available2022-05-11T14:43:31Z
dc.date.issued2014
dc.departmentFakülteler, Ziraat Fakültesi, Bitki Koruma Bölümü
dc.description.abstractThe resistance of immature grape berries to Botrytis cinerea Pers. ex Fr. results from a combination of factors, among which the accumulation of the stilbene phytoalexin t-resveratrol. Stilbene accumulation is thought to be induced by oligogalacturonides (OGs) which are released from the plant cell wall during tissue maceration catalysed by polygalacturonases (PGs) produced by necrotrophic fungal pathogens. Inhibitors of PG activity, the polygalacturonase- inhibiting proteins (PGIPs), have the capability to slow the hydrolytic activity of PGs and favour the accumulation of active OGs. In the present work we have observed that artificial inoculation of grape inflorescences and immature berries at bloom and post bloom, leads to severe infection of the rachis, while lesions on young berries did not result in the development of the disease, but in the development of necrotic spots and rings. PG was detectable in berry tissues, but its secretion was significantly lower than in infected leaves. Tissues of immature berries reacted to B. cinerea inoculation by a marked accumulation of t-resveratrol. PG produced during spore germination of B. cinerea elicited t-resveratrol accumulation. Apoplastic fluids (AFs) from immature berries and leaves were found to inhibit total PG activity produced by B. cinerea, indicating the involvement of a proteinaceous or non-proteinaceous PG inhibitor, or both, as intercellular defence mechanisms. Taken together, our results suggest that the inhibition of PG produced by B. cinerea mediated by a putative PG inhibitor during the early stages of infection of immature grape berries plays a central role in promoting accumulation of t-resveratrol and, consequently, the restriction of pathogen spread.
dc.identifier.doi10.4454/JPP.V96I2.038
dc.identifier.endpage269
dc.identifier.issn1125-4653
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-84903958035
dc.identifier.scopusqualityQ2
dc.identifier.startpage261
dc.identifier.urihttps://doi.org/10.4454/JPP.V96I2.038
dc.identifier.urihttps://hdl.handle.net/20.500.11776/9630
dc.identifier.volume96
dc.indekslendigikaynakScopus
dc.institutionauthorKöycü, Nagehan Desen
dc.institutionauthorÖzer, Nuray
dc.language.isoen
dc.publisherEdizioni ETS
dc.relation.ispartofJournal of Plant Pathology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDefence responses
dc.subjectGrey mould
dc.subjectPolygalacturonase- inhibiting activity
dc.subjectStilbene phytoalexins
dc.subjectSusceptibility
dc.titleT-resveratrol accumulation and polygalacturonase inhibition during infection of grape berries by Botrytis cinerea
dc.typeArticle

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