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dc.contributor.authorGuevara-Avendano, Edgar
dc.contributor.authorCarrillo, Joseph D
dc.contributor.authorNdinga-Muniania, Cedric
dc.contributor.authorMoreno, Kevin
dc.contributor.authorMendez-Bravo, Alfonso
dc.contributor.authorGuerrero-Analco, Jose A
dc.contributor.authorEskalen, Akif
dc.contributor.authorReverchon, Frederique
dc.date.accessioned2019-06-19T13:04:07Z
dc.date.available2019-06-19T13:04:07Z
dc.date.issued2018
dc.identifier.issn0003-6072
dc.identifier.doi10.1007/s10482-017-0977-5
dc.identifier.urihttp://hdl.handle.net/10072/383054
dc.description.abstractPlant rhizobacteria have been successfully used as biocontrol agents against fungal phytopathogens. However, their potential to control two important avocado diseases, namely Fusarium dieback (FD) and Phytophthora root rot (PRR), has been poorly studied. FD is an emerging disease triggered by fungi associated with two ambrosia beetle species (Euwallacea fornicatus species complex), while PRR is caused by Phytophthora cinnamomi, a soil-borne oomycete. In the present work, the antifungal activity of bacteria isolated from avocado rhizosphere was tested in dual culture assays against Fusarium euwallaceae, Graphium euwallaceae and Graphium sp., causal agents of FD, and against P. cinnamomi. In 2015, rhizosphere soil samples of FD infested and non-infested avocado trees were collected from a commercial avocado orchard in Escondido, California. In an initial screening, 72 of the 168 assessed bacterial isolates reduced mycelial growth of F. euwallaceae by up to 46%. Eight bacterial isolates showing inhibition percentages larger than 40% were then selected for further antagonism assays against the other fungal pathogens. Five bacterial isolates, determined by 16S rDNA sequencing to belong to the Bacillus subtilis/Bacillus amyloliquefaciens species complex, successfully inhibited the mycelial growth of both Graphium species by up to 30%. The same isolates and an additional isolate identified as Bacillus mycoides, inhibited the growth of P. cinnamomi by up to 25%. This is the first report of avocado rhizobacteria with antifungal activity against pathogens responsible for FD and PRR in avocado.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSPRINGER
dc.relation.ispartofpagefrom563
dc.relation.ispartofpageto572
dc.relation.ispartofissue4
dc.relation.ispartofjournalANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
dc.relation.ispartofvolume111
dc.subject.fieldofresearchMicrobiology
dc.subject.fieldofresearchMedical Microbiology
dc.subject.fieldofresearchcode0605
dc.subject.fieldofresearchcode1108
dc.titleAntifungal activity of avocado rhizobacteria against Fusarium euwallaceae and Graphium spp., associated with Euwallacea spp. nr. fornicatus, and Phytophthora cinnamomi
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright
gro.hasfulltextNo Full Text
gro.griffith.authorReverchon, Frederique


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