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Universidade de Brasília
Use este identificador para citar ou linkar para este item: http://repositorio2.unb.br/jspui/handle/10482/46858
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dc.contributor.authorSantos, Jônatas Barros dos-
dc.contributor.authorCruz, José de Oliveira-
dc.contributor.authorGeraldo, Leticia Costa-
dc.contributor.authorDias, Emanuel Guimarães-
dc.contributor.authorQueiroz, Paulo Roberto Martins-
dc.contributor.authorMonnerat, Rose Gomes-
dc.contributor.authorBorges, Miguel-
dc.contributor.authorMoraes, Maria Carolina Blassioli-
dc.contributor.authorBlum, Luiz Eduardo Bassay-
dc.date.accessioned2023-11-14T14:26:06Z-
dc.date.available2023-11-14T14:26:06Z-
dc.date.issued2023-
dc.identifier.citationSANTOS, Jônatas Barros dos et al. Detection and evaluation of volatile and non-volatile antifungal compounds produced by Bacillus spp. strains. Microbiological Research, v. 275, 127465, out. 2023. DOI: https://doi.org/10.1016/j.micres.2023.127465.pt_BR
dc.identifier.urihttp://repositorio2.unb.br/jspui/handle/10482/46858-
dc.language.isoengpt_BR
dc.publisherElsevier GmbHpt_BR
dc.rightsAcesso Restritopt_BR
dc.titleDetection and evaluation of volatile and non-volatile antifungal compounds produced by Bacillus spp. strainspt_BR
dc.typeArtigopt_BR
dc.subject.keywordControle biológicopt_BR
dc.subject.keywordCompostos orgânicos voláteispt_BR
dc.subject.keywordMetabólitos secundáriospt_BR
dc.subject.keywordMofo brancopt_BR
dc.identifier.doihttps://doi.org/10.1016/j.micres.2023.127465pt_BR
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0944501323001672?via%3Dihubpt_BR
dc.description.abstract1The identification of antifungal compounds produced by microorganisms is crucial in the context of sustainable agriculture. Bacteria of the genus Bacillus have a broad spectrum of action that can influence plant growth and control pests, vectors of public health relevance and phytopathogens. Lipopeptides are the main compounds related to the biological control of several pathogen species. Strains with biotechnological potential are identified by means of in vitro bioassays and molecular tests. In this study, strains from the Bacillus Bank of Brazilian Agricultural Research Corporation (EMBRAPA/DF/Brazil) were selected to control the fungal pathogens Sclerotinia sclerotiorum and Fusarium oxysporum by pairing assays. The detection of genes for biosynthesis of antifungal compounds from strains with high pathogen-inhibition capacity was correlated with peptide synthesis, such as bacillomycin D, fengycin d, bacilysin and surfactin. Their gene expression in contact with the pathogen was analyzed by Real-Time PCR. The volatile organic compounds produced by selected Bacillus strains were identified and quantified. In co-culture assays, the inhibition zone between Bacillus strains and Sclerotinia sclerotiorum was evaluated by scanning electron microscopy. Thirteen potentially anti-pathogenic strains were selected. Genes related to the synthesis of antifungal peptides were detected in 11 of them. In five strains, all tested genes were detected. Bacillomycin was the most frequently found lipopeptide gene. The fungus-bacteria interaction potentiated the production of volatiles. Several ketones and other volatile compounds with antifungal activity were identified. Relevant morphological changes in the fungus were observed when paired with bacteria. The study demonstrated the efficacy of the selected strains with regard to the biological control of phytopathogens and their biotechnological potential.pt_BR
dc.contributor.affiliationUniversity of Brasília, Faculty of Agronomy and Veterinary Medicine, Postgraduate Program in Agronomypt_BR
dc.contributor.affiliationUniversity of Brasília, Faculty of Agronomy and Veterinary Medicine, Postgraduate Program in Agronomypt_BR
dc.contributor.affiliationUniversity of Brasília, Faculty of Agronomy and Veterinary Medicine, Postgraduate Program in Agronomypt_BR
dc.contributor.affiliationUniversity of Brasília, Faculty of Agronomy and Veterinary Medicine, Postgraduate Program in Agronomypt_BR
dc.contributor.affiliationUniversity Center of Brasíliapt_BR
dc.contributor.affiliationEmpresa Brasileira de Pesquisa Agropecuáriapt_BR
dc.contributor.affiliationEmpresa Brasileira de Pesquisa Agropecuáriapt_BR
dc.contributor.affiliationEmpresa Brasileira de Pesquisa Agropecuáriapt_BR
dc.contributor.affiliationUniversity of Brasília, Faculty of Agronomy and Veterinary Medicine, Postgraduate Program in Agronomypt_BR
dc.description.unidadeFaculdade de Agronomia e Medicina Veterinária (FAV)pt_BR
dc.description.ppgPrograma de Pós-Graduação em Agronomiapt_BR
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