Journal
EUROPEAN JOURNAL OF PLANT PATHOLOGY
Volume 124, Issue 2, Pages 261-268Publisher
SPRINGER
DOI: 10.1007/s10658-008-9411-1
Keywords
Antifungal activity; Botrytis cinerea; Pythium aphanidermatum; Quorum sensing
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Funding
- National Natural Science Foundation of China [30670030, 30470954]
- Jiangsu University [07JDG030]
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Quorum sensing regulation, mediated by N-acyl homoserine lactone signals, produced by strain Serratia plymuthica HRO-C48 isolated from the rhizosphere of oilseed rape, was found to be responsible for this strain's ability to produce the broad spectrum antibiotic pyrrolnitrin. In this study, we have shown that some other biocontrol-related traits of strain HRO-C48, such as protection of cucumbers against Pythium apahnidermatum damping-off disease, induced systemic resistance to Botrytis cinerea grey mold in bean and tomato plants, and that colonisation of the rhizosphere also depends on AHL signalling. The results prove that quorum sensing regulation may be generally involved in interactions between plant-associated bacteria, fungal pathogens and host plants.
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