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Oxidative stress response of Beauveria bassiana induced by Bordeaux mixture and its influence on fungus growth and development

2014Journal article Restricted access
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dc.contributor.authorMartins, Fátima
dc.contributor.authorPereira, J.A.
dc.contributor.authorBaptista, Paula
dc.date.accessioned2014-09-22T11:47:49Z
dc.date.available2014-09-22T11:47:49Z
dc.date.issued2014
dc.description.abstractBACKGROUND: Chemical fungicides used to manage plant diseases may negatively affect beneficial fungi such as entomopathogens. In this study, the participation of the antioxidative system in the entomopathogenic fungus Beauveria bassiana exposed to the copper-based Bordeaux mixture fungicide and its relation with fungus growth and development were examined. The fungus was grown in submerged culture containing Bordeaux mixture at the recommended dose. Within the first 24 h of elicitation, the vegetative growth, germination, sporulation and activity of amylase and laccase and the antioxidative enzymes catalase (CAT) and superoxide dismutase (SOD), as well as the production of hydrogen peroxide (H2O2), were evaluated. RESULTS: Bordeaux mixture inhibited B. bassiana germination (between 65 and 88%) and sporulation (between 15 and 57%) and significantly increased laccase production (≥130%), especially within the first 4 h of fungus exposure. By contrast, the mycelial growth was found to be less affected by the fungicide. These effects were accompanied with a significant increase in H2O2 levels in fungal cells, as well as in SOD activity, but not in CAT, showing clear signs of increased oxidative stress. CONCLUSION: The effect of Bordeaux mixture on B. bassiana development was probably due to the toxicity of the copper ion itself, and it also induced an oxidative state in fungal cells.por
dc.identifier.citationMartins, Fátima; Pereira, J.A.; Baptista, Paula (2014). Oxidative stress response of Beauveria bassiana induced by Bordeaux mixture and its influence on fungus growth and development. Pest Management Science. ISSN 1526-498X. 70:8, p. 1220-1227por
dc.identifier.doi10.1002/ps.3675
dc.identifier.issn1526-498X
dc.identifier.urihttp://hdl.handle.net/10198/10522
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWiley-Blackwellpor
dc.relationEntomopathogenic fungi associated to olive pests: isolation, characterization and selection for biological control
dc.subjectEntomopathogenic fungipor
dc.subjectCopper-based fungicidepor
dc.subjectAntioxidant enzymespor
dc.subjectGerminationpor
dc.subjectSporulationpor
dc.titleOxidative stress response of Beauveria bassiana induced by Bordeaux mixture and its influence on fungus growth and developmentpor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleEntomopathogenic fungi associated to olive pests: isolation, characterization and selection for biological control
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FAGR-AAM%2F102600%2F2008/PT
oaire.citation.endPage1227por
oaire.citation.issue8por
oaire.citation.startPage1220por
oaire.citation.titlePest Management Sciencepor
oaire.citation.volume70por
oaire.fundingStream5876-PPCDTI
person.familyNamePereira
person.familyNameBaptista
person.givenNameJosé Alberto
person.givenNamePaula
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.ciencia-id7D11-FE1E-CD0F
person.identifier.orcid0000-0002-2260-0600
person.identifier.orcid0000-0001-6331-3731
person.identifier.ridL-6798-2014
person.identifier.scopus-author-id57204366348
person.identifier.scopus-author-id14051688000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication7932162e-a2da-4913-b00d-17babbe51857
relation.isAuthorOfPublication3f35226a-b17a-4f7d-8da1-3297105cbfe9
relation.isAuthorOfPublication.latestForDiscovery7932162e-a2da-4913-b00d-17babbe51857
relation.isProjectOfPublicatione196ef88-8e34-4406-b1d0-060c9bae234f
relation.isProjectOfPublication.latestForDiscoverye196ef88-8e34-4406-b1d0-060c9bae234f

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