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dc.contributor.authorCalvo Garrido, Carlos
dc.contributor.authorViñas Almenar, Inmaculada
dc.contributor.authorUsall i Rodié, Josep
dc.contributor.authorRodríguez-Romera, M.
dc.contributor.authorRamos Martín, Ma. C. (Ma. Concepción)
dc.contributor.authorTeixidó i Espasa, Neus
dc.date.accessioned2017-05-22T09:22:15Z
dc.date.issued2014
dc.identifier.issn1364-5072
dc.identifier.urihttp://hdl.handle.net/10459.1/59675
dc.description.abstractAIMS: As reliability of preharvest applications of biological control agents (BCAs) to control fruit pathogens is highly dependent on the survival of the selected organism, this study aimed to describe the population dynamics of the yeast-BCA Candida sake (Saito & Ota) CPA-1 on grape berries under the effect of abiotic factors such as temperature, relative humidity, sunlight and rainfall. METHODS AND RESULTS: Candida sake (5 × 10(7) CFU ml(-1)), combined with different concentrations of the food additive Fungicover(®), was applied on grape berry clusters. Treated clusters were then exposed to abiotic factors in field or laboratory conditions, recovering populations to describe C. sake population dynamics. The addition of Fungicover significantly increased C. sake multiplication under optimal growth conditions and improved survival under fluctuating abiotic factors. After field applications, significant differences in populations on grape bunches exposed or covered by fine foliage were detected. Simulated rainfall washed off C. sake populations by 0·6-0·9 log units after 20 mm of rain volume. Allowing populations to establish for 24 h or more, prior to a rain event, persistence on grape berries significantly increased and the effect of rain intensity was not observable. CONCLUSIONS: Candida sake demonstrated high survival ability under unfavourable environmental conditions and persistence under intense rain. The study evidenced the importance of the first period just after application for C. sake survival on grape tissues and also the protective effect of the additive Fungicover. SIGNIFICANCE AND IMPACT OF THE STUDY: This research provides new information on the survival of C. sake under field conditions and its practical implications for recommending timing of spray with this antagonist. Our results could be useful for other yeast antagonists applied before harvest. This work, for the first time, defines population dynamics of a yeast BCA using simulated rainfall.
dc.description.sponsorshipThe authors are grateful to the University of Lleida for Carlos Calvo Garrido PhD grant and the organic production research project and to the European Union for their financial support through the INTERREG REDBIO project. They are also grateful to E. Cases and R. Oró for their technical support and to the L’Olivera winery vineyard managers for their valuable help with field trials and sampling
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherThe Society for Applied Microbiology
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1111/jam.12570
dc.relation.ispartofJournal of Applied Microbiology, 2014, vol. 117, núm. 3, p. 800-811
dc.rights(c) Society for Applied Microbiology, 2014
dc.subjectVitis vinifera
dc.subjectFatty acids
dc.subjectRainfall
dc.subjectVineyard
dc.subject.otherRaïms
dc.subject.otherVinya
dc.subject.otherMicroorganismes
dc.titleSurvival of the biological control agent Candida sake CPA-1 on grapes under the influence of abiotic factors
dc.typeinfo:eu-repo/semantics/article
dc.date.updated2017-05-22T09:22:24Z
dc.identifier.idgrec021548
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccess
dc.identifier.doihttps://doi.org/10.1111/jam.12570
dc.date.embargoEndDate2025-01-01


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