On the Applicability of Chitosan Oligomers-Amino Acid Conjugate Complexes as Eco-Friendly Fungicides against Grapevine Trunk Pathogens

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dc.bibliographicCitation.titleAgronomyen
dc.bibliographicCitation.volume11(2)es_ES
dc.contributor.authorBuzón Durán, Lauraes_ES
dc.contributor.authorLanga Lomba, Nataliaes_ES
dc.contributor.authorGonzález García, Vicentees_ES
dc.contributor.authorCasanova Gascón, Josées_ES
dc.contributor.authorMartín Gil, Jesúses_ES
dc.contributor.authorPérez Lebeña, Eduardoes_ES
dc.contributor.authorMartín Ramos, Pabloes_ES
dc.coverage.spatialSanidad vegetales_ES
dc.date.accessioned2021-02-23T11:20:04Z
dc.date.available2021-02-23T11:20:04Z
dc.date.issued2021es_ES
dc.description.abstractIn a context in which the incidence and severity of grapevine fungal diseases is increasing as a result of both climate change and modern management culture practices, reducing the excessive use of phytosanitary products in viticulture represents a major challenge. Specifically, grapevine trunk diseases (GTDs), caused by several complexes of wood decay or xylem-inhabiting fungi, pose a major challenge to vineyard sustainability. In this study, the efficacy of chitosan oligomers (COS)–amino acid conjugate complexes against three fungal species belonging to the Botryosphaeriaceae family (Neofusicoccum parvum, Diplodia seriata, and Botryosphaeria dothidea) was investigated both in vitro and in planta. In vitro tests led to EC50 and EC90 effective concentrations in the 254.6−448.5 and 672.1−1498.5 µg·mL−1 range, respectively, depending on the amino acid involved in the conjugate complex (viz. cysteine, glycine, proline or tyrosine) and on the pathogen assayed. A synergistic effect between COS and the amino acids was observed against D. seriata and B. dothidea (synergy factors of up to 2.5 and 2.8, respectively, according to Wadley’s method). The formulations based on COS and on the conjugate complex that showed the best inhibition rates, COS−tyrosine, were further investigated in a greenhouse trial on grafted vines of two varieties (”Tempranillo” on 775P and “Garnacha” on 110R rootstock), artificially inoculated with the mentioned three Botryosphaeriaceae species. The in planta bioassay revealed that the chosen formulations induced a significant decrease in disease severity against N. parvum and B. dothidea. In summary, the reported conjugate complexes may be promising enough to be worthy of additional examination in larger field trials.en
dc.description.statusPublishedes_ES
dc.identifier.citationAgronomy, vol. 11, num. 2, (2021)
dc.identifier.urihttp://hdl.handle.net/10532/5237
dc.language.isoenes_ES
dc.relation.doi10.3390/agronomy11020324es_ES
dc.relation.urihttps://www.mdpi.com/2073-4395/11/2/324es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.agrovocVitis viníferaes
dc.subject.agrovocOrganismos patógenoses
dc.subject.agrovocFungicidases
dc.subject.agrovocQuitosanoes
dc.titleOn the Applicability of Chitosan Oligomers-Amino Acid Conjugate Complexes as Eco-Friendly Fungicides against Grapevine Trunk Pathogensen
dc.typeJournal Contribution*
dc.type.refereedRefereedes_ES
dc.type.specifiedArticlees_ES

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