Pseudomonas orientalis F9: A potent antagonist against phytopathogens with phytotoxic effect in the apple flower

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dc.contributor.authorZengerer V
dc.contributor.authorSchmid M
dc.contributor.authorBieri M
dc.contributor.authorMüller DC
dc.contributor.authorRemus-Emsermann MNP
dc.contributor.authorAhrens CH
dc.contributor.authorPelludat C
dc.date.accessioned2018-12-17T23:58:49Z
dc.date.available2018-12-17T23:58:49Z
dc.date.issued2018en
dc.date.updated2018-10-31T19:42:17Z
dc.description.abstract© 2018 Zengerer, Schmid, Bieri, Müller, Remus-Emsermann, Ahrens and Pelludat. In light of public concerns over the use of pesticides and antibiotics in plant protection and the subsequent selection for spread of resistant bacteria in the environment, it is inevitable to broaden our knowledge about viable alternatives, such as natural antagonists and their mode of action. The genus Pseudomonas is known for its metabolic versatility and genetic plasticity, encompassing pathogens as well as antagonists. We characterized strain Pseudomonas orientalis F9, an isolate from apple flowers in a Swiss orchard, and determined its antagonistic activity against several phytopathogenic bacteria, in particular Erwinia amylovora, the causal agent of fire blight. P. orientalis F9 displayed antagonistic activity against a broad suite of phytopathogenic bacteria in the in vitro tests. The promising results from this analysis led to an ex vivo assay with E. amylovora CFBP1430Rifand P. orientalis F9 infected detached apple flowers. F9 diminished the fire blight pathogen in the flowers but also revealed phytotoxic traits. The experimental results were discussed in light of the complete genome sequence of F9, which revealed the strain to carry phenazine genes. Phenazines are known to contribute to antagonistic activity of bacterial strains against soil pathogens. When tested in the cress assay with Pythium ultimum as pathogen, F9 showed results comparable to the known antagonist P. protegens CHA0.en
dc.identifier.doihttps://doi.org/10.3389/fmicb.2018.00145
dc.identifier.issn1664-302X
dc.identifier.issn1664-302X
dc.identifier.urihttp://hdl.handle.net/10092/16374
dc.languageEnglish
dc.language.isoen
dc.rightsCopyright © 2018 Zengerer, Schmid, Bieri, Müller, Remus-Emsermann, Ahrens and Pelludat. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en
dc.subjectPseudomonas orientalisen
dc.subjectErwinia amylovoraen
dc.subjectantagonistic traitsen
dc.subjectphytotoxicityen
dc.subjectwhole genome sequencingen
dc.subject.anzsrcField of Research::06 - Biological Sciences::0607 - Plant Biology::060704 - Plant Pathologyen
dc.subject.anzsrcField of Research::06 - Biological Sciences::0607 - Plant Biology::060705 - Plant Physiologyen
dc.titlePseudomonas orientalis F9: A potent antagonist against phytopathogens with phytotoxic effect in the apple floweren
dc.typeJournal Articleen
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