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dc.contributor.authorMELO, I. S. dept_BR
dc.contributor.authorVALENTE, A. M. M. P.pt_BR
dc.contributor.authorKAVAMURA, V. N.pt_BR
dc.contributor.authorVILELA, E. S. D.pt_BR
dc.contributor.authorFAULL, J. L.pt_BR
dc.date.accessioned2015-12-07T11:11:11Zpt_BR
dc.date.available2015-12-07T11:11:11Zpt_BR
dc.date.created2015-12-07pt_BR
dc.date.issued2014pt_BR
dc.identifier.citationJournal of Plant Protection Research, Varsóvia, v. 54, n. 4, p. 327-333, 2014.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1030877pt_BR
dc.descriptionAbstract: In this study, a Bionectria sp. strain isolated from citrus rhizosphere was evaluated for its potential in inhibiting the growth of Rhizoctonia solani and Pythium aphanidermatum. It was demonstrated that Bionectria sp. 6.21 inhibited the growth of P. aphanidermatum and R. solani. In dual cultures, however, the antagonist only parasitised R. solani. Regarding the assay involving P. aphanidermatum, a lack of mycoparasitic ability was demonstrated. Crude extract of Bionectria completely inhibited the mycelial growth of both fungi. It appears that the main mechanism involved in the antagonism of Pythium by Bionectria is through antibiotic production. The antagonistic fungus released extracellular secondary metabolites. The metabolites were found to be inhibitory to both plant pathogenic fungi. From the crude extract, eleven fractions were obtained and tested for their antifungal properties. Two of them showed very strong activity against P. aphanidermatum. The obtained results indicated that this biocontrol agent has both antibiotic and mycoparasitic properties. On the other hand, evidence obtained from Scanning Electron Microscopy (SEM) suggests the involvement of an enzymatic process, with enzymatic digestion playing a major role in the parasitism of Bionectria sp. 6.21. In conclusion, these results provide evidence that mainly due to mycoparasitism, this strain has the potential to become a good candidate for biological control.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectAtividade antifúngicapt_BR
dc.subjectAntifungal activitypt_BR
dc.subjectBionectria sppt_BR
dc.subjectPlant diseasespt_BR
dc.subjectMycoparasitspt_BR
dc.titleMycoparasitic nature of Bionectria sp. strain 6.21.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-01-25T11:11:11Zpt_BR
dc.subject.thesagroFungopt_BR
dc.subject.thesagroFungo para controle biológicopt_BR
dc.subject.thesagroControle biológicopt_BR
dc.subject.thesagroRhizoctonia solanipt_BR
dc.subject.thesagroPythium aphanidermatumpt_BR
dc.subject.thesagroDoença de plantapt_BR
dc.subject.nalthesaurusFungipt_BR
dc.subject.nalthesaurusPlant diseases and disorderspt_BR
dc.subject.nalthesaurusBiological control agentspt_BR
dc.subject.nalthesaurusAntifungal propertiespt_BR
dc.subject.nalthesaurusenzymespt_BR
riaa.ainfo.id1030877pt_BR
riaa.ainfo.lastupdate2016-01-25pt_BR
dc.contributor.institutionITAMAR SOARES DE MELO, CNPMA; ANGELA MARIA MONTES PERAL VALENTE; VANESSA NESSNER KAVAMURA, FAPESP; ELKE SIMONI DIAS VILELA, CNPMA; JANE LOUISE FAULL, University of London.pt_BR
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