Pseudomonas orientalis F9 Pyoverdine, Safracin, and Phenazine Mutants Remain Effective Antagonists against Erwinia amylovora in Apple Flowers
Amanda Santos KronAgroscope, Research Division Plant Protection, Wädenswil, SwitzerlandVeronika ZengererAgroscope, Research Division Plant Protection, Wädenswil, SwitzerlandMarco BieriAgroscope, Research Division Plant Protection, Wädenswil, SwitzerlandVera DreyfussAgroscope, Research Division Plant Protection, Wädenswil, SwitzerlandTanja SostizzoAgroscope, Research Division Phytosanitary Service, Wädenswil, SwitzerlandMichael SchmidGenexa AG, Zürich, SwitzerlandMatthias LutzAgroscope, Research Division Extension Vegetable Growth, Wädenswil, SwitzerlandMitja N. P. Remus‐EmsermannBiomolecular Interaction Centre, University of Canterbury, Christchurch, New ZealandCosima PelludatAgroscope, Research Division Plant Protection, Wädenswil, Switzerland
2020en
ABI
Annotatsiya
Pseudomonas orientalis F9 is an antagonist of the economically important phytopathogen Erwinia amylovora , the causal agent of fire blight in pomme fruit. On King’s B medium, P. orientalis F9 produces a pyoverdine siderophore and the antibiotic safracin. P. orientalis F9 transposon mutants lacking these factors fail to antagonize E. amylovora , depending on the in vitro assay. On isolated flowers and in soil microcosms, however, pyoverdine, safracin, and phenazine mutants control phytopathogens as clearly as their parental strains.
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