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Involvement of reactive oxygen species during early stages of ectomycorrhiza establishment between Castanea sativa and Pisolithus tinctorius

2007Journal article Open access
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dc.contributor.authorBaptista, Paula
dc.contributor.authorMartins, Anabela
dc.contributor.authorPais, Maria Salomé
dc.contributor.authorTavares, Rui Manuel
dc.contributor.authorLino-Neto, Teresa
dc.date.accessioned2008-11-11T14:30:00Z
dc.date.available2008-11-11T14:30:00Z
dc.date.issued2007
dc.description.abstractEvidence for the participation of reactive oxygen species (ROS) and antioxidant systems in ectomycorrhizal(ECM) establishment is lacking. In this paper, we evaluated ROS production and the activities of superoxide dismutase (SOD) and catalase (CAT) during the early contact of the ECM fungus Pisolithus tinctorius with the roots of Castanea sativa (chestnut tree). Roots were placed in contact with P. tinctorius mycelia, and ROS production was evaluated by determining the levels of H2O2 and O2 I− during the early stages of fungal contact. Three peaks of H2O2 production were detected, the first two coinciding with O2 I− bursts. The first H2O2 production peak coincided with an increase in SOD activity, whereas CAT activity seemed to be implicated in H2O2 scavenging. P. tinctorius growth was evaluated in the presence of P. tinctorius-elicited C. sativa crude extracts prepared during the early stages of fungal contact. Differential hyphal growth that matched the H2O2 production profile with a delay was detected. The result suggests that during theearly stages of ECM establishment, H2O2 results from an inhibition of ROS-scavenging enzymes and plays a role in signalling during symbiotic establishment.en
dc.identifier.citationBaptista, Paula; Martins, Anabela; Pais, Maria Salomé; Tavares, Rui; Lino-Neto, Teresa (2007). Involvement of reactive oxygen species during early stages of ectomycorrhiza establishment between Castanea sativa and Pisolithus tinctorius. Mycorrhiza. ISSN 0940-6360. 17:3, p. 185-193en
dc.identifier.doi10.1007/s00572-006-0091-4
dc.identifier.issn0940-6360
dc.identifier.urihttp://hdl.handle.net/10198/947
dc.language.isoengen
dc.publisherSpringeren
dc.relationStudy of the mecanisms regulating the interactions between ectomycorrhizal fungi and roots of Castanea sativa Mill. European chestnut
dc.subjectCastanea sativaen
dc.subjectPisolithus tinctoriusen
dc.subjectEctomycorrhiza (ECM)en
dc.subjectReactive oxygen speciesen
dc.subjectCatalase (CAT)en
dc.subjectSuperoxide dismutase (SOD)en
dc.titleInvolvement of reactive oxygen species during early stages of ectomycorrhiza establishment between Castanea sativa and Pisolithus tinctoriusen
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleStudy of the mecanisms regulating the interactions between ectomycorrhizal fungi and roots of Castanea sativa Mill. European chestnut
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCTI%2FBSE%2F38059%2F2001/PT
oaire.fundingStreamPOCI
person.familyNameBaptista
person.familyNameMartins
person.givenNamePaula
person.givenNameAnabela
person.identifier.ciencia-id7D11-FE1E-CD0F
person.identifier.ciencia-id7B18-A810-6B93
person.identifier.orcid0000-0001-6331-3731
person.identifier.orcid0000-0001-6218-4413
person.identifier.ridG-5488-2013
person.identifier.scopus-author-id14051688000
person.identifier.scopus-author-id7203013518
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticleen
relation.isAuthorOfPublication3f35226a-b17a-4f7d-8da1-3297105cbfe9
relation.isAuthorOfPublication383370dd-10e5-40e6-9a15-f2201fe95581
relation.isAuthorOfPublication.latestForDiscovery383370dd-10e5-40e6-9a15-f2201fe95581
relation.isProjectOfPublicationb9e0d402-9c37-4a64-b62f-f12950bc8be1
relation.isProjectOfPublication.latestForDiscoveryb9e0d402-9c37-4a64-b62f-f12950bc8be1

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