Journal of Plant Pathology (2005) 87, p. 307 (Vinale et al.)

F. Vinale, A. Fiore, V. Fogliano, F. Scala, M. Gallo, S. Gigante, G. Cirvilleri, A. Catara and M. Lorito (2005)
Biocontrol Pseudomonas strains against postharvest pathogens of apple
Journal of Plant Pathology 87 (4), 307-307
XII Meeting, Italian Society for Plant Pathology, Reggio Calabria, 29/9 - 1/10, 2005 (poster)
Abstract: Serious economical losses on fruits and vegetables are caused by post-harvest storage rots. Use of biological control agents may prevent post-harvest diseases and may be a useful alternative to pesticide applications. In this work, different Pseudomonas strains (Pseudomonas corrugata and Pseudomonas syringae) were screened for their antagonistic ability to control in vivo the fungal pathogens Penicillium expansum and Alternaria alternata on apple (Malus domestica cv Annurca). Both pathogen and antagonist suspensions were directly co-inoculated on wounded cv Annurca apples and lesion diameter was measured. Results showed that the most promising isolates, P. syringae 1480A and 46, reduced post-harvest symptoms when bacterial suspension and pathogen conidia were inoculated at concentrations of 1-5·107 CFU ml^-1 and 1-6·10⁶ conidia ml^-1, respectively. These strains also provided an excellent control of rot development by dipping the apples in the bacterial suspension. To identify the molecules involved in the biocontrol activity of these strains, the production of lipodepsipeptides (LDPs) and various enzymatic activities (glucanase and chitinase) were investigated. P. syringae strains 1480A and 46 did not produce lipodepsipeptides, but had a considerable level of glucanase and chitinase activity.
Database assignments for author(s): Francesco Vinale, Felice Scala, Gabriella Cirvilleri

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Penicillium expansum	Apple (Malus)
	Alternaria alternata	Apple (Malus)
Pseudomonas syringae (antagonist)	Penicillium expansum	Apple (Malus)
Pseudomonas syringae (antagonist)	Alternaria alternata	Apple (Malus)