Assessment of the relevance of the antibiotic 2‐amino‐3‐(oxirane‐2,3‐dicarboxamido)‐propanoyl‐valine from P antoea agglomerans biological control strains against bacterial plant pathogens

The epiphyte P antoea agglomerans 48b/90 (Pa48b) is a promising biocontrol strain against economically important bacterial pathogens such as E rwinia amylovora . Strain Pa48b produces the broad‐spectrum antibiotic 2‐amino‐3‐(oxirane‐2,3‐dicarboxamido)‐propanoyl‐valine ( APV ) in a temperature‐depend...

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Bibliographic Details
Published in:MicrobiologyOpen (Weinheim) 2012-12, Vol.1 (4), p.438-449
Main Authors: Sammer, Ulrike F., Reiher, Katharina, Spiteller, Dieter, Wensing, Annette, Völksch, Beate
Format: Article
Language:English
Subjects:
Antagonism
Antibiotics
Biological control
Blight
Colonization
E coli
Economic importance
Ethylene oxide
Experiments
Laboratories
Metabolites
Pathogens
Signs and symptoms
Soybeans
Studies
Temperature dependence
Valine
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Summary:The epiphyte P antoea agglomerans 48b/90 (Pa48b) is a promising biocontrol strain against economically important bacterial pathogens such as E rwinia amylovora . Strain Pa48b produces the broad‐spectrum antibiotic 2‐amino‐3‐(oxirane‐2,3‐dicarboxamido)‐propanoyl‐valine ( APV ) in a temperature‐dependent manner. An APV ‐negative mutant still suppressed the E . amylovora population and fire blight disease symptoms in apple blossom experiments under greenhouse conditions, but was inferior to the Pa48b wild‐type indicating the influence of APV in the antagonism. In plant experiments with the soybean pathogen P seudomonas syringae pv. glycinea both, Pa48b and the APV ‐negative mutant, successfully suppressed the pathogen. Our results demonstrate that the P . agglomerans strain Pa48b is an efficient biocontrol organism against plant pathogens, and we prove its ability for fast colonization of plant surfaces over a wide temperature range.
ISSN:2045-8827
2045-8827
DOI:10.1002/mbo3.43