Journal of Plant Pathology (2006) 88, p. S45 (Giobbe et al.)
S. Giobbe, L. Cubaiu, B. Scherm, M.A. Demontis, M. Budroni and Q. Migheli (2006)
Biocontrol activity of wine yeasts against postharvest rot on apple fruit caused by Penicillium expansum and Monilinia fructigena
Journal of Plant Pathology 88 (3, Special Issue), S45-S45
S.I.Pa.V XIII National Meeting - Foggia, 12-16 September 2006 - Poster
Abstract: Penicillium expansum and Monilinia spp. cause severe rot of apple fruit during storage and shelf life. Aiming at the development of new antagonistic yeast active in controlling multiple postharvest pathogens, over 100 wine isolates representing 32 species were tested from our culture collection in biocontrol experiments carried out under laboratory condition. Three isolates of Pichia fermentans, Metschnikowia pulcherrima and Kloeckera javanica were selected for their high biocontrol efficacy against infection caused by P. expansum, and were used in further experiments against Monilinia spp. Strain 726 of P. fermentans, isolated from wine must, was chosen for its remarkable antagonistic properties against blue mould and brown rot of apple. In trials carried out on the cvs Golden Delicious and Renetta, the yeast reduced both apple rot caused by P. expansum and M. fructigena with up to 100% efficacy. Killed yeast cells and culture filtrates had no or very low biocontrol activity. The role of killer toxins and of the competition for space and nutrients in the biological activity of the most effective strains is reported.
Database assignments for author(s): Quirico Migheli
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
