Efficacy and putative mode of action of native and commercial antagonistic yeasts against postharvest pear pathogens
- Lutz, María Cecilia
- Lopes, Christian Ariel
- Rodríguez, María Eugenia
- Sosa, M. Cristina
- Sangorrin, Marcela Paula
DOIAbstract
The putative mechanisms of action involved in the biocontrol capacity of four yeast strains (Cryptoccocus albidus NPCC 1248, Pichia membranifaciens NPCC 1250, Cryptoccocus victoriae NPCC 1263 and NPCC 1259) against Penicillium expansum and Botrytis cinerea were studied in vitro and in situ assays. C. albidus YP commercial strain was also evaluated with comparative purposes. All yeast strains showed different mechanisms including: wound colonization, germination inhibition, biofilms formation, secretion of killer toxins, competition for nutrient and secretion of hydrolytic enzymes (protease, quitinase and glucanase activities). The relationship between strains (and their associated antagonist mechanisms) and the in situ antagonist activity w...
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