YEASTS AS ANTAGONISTS AGAINST ERWINIA AMYLOVORA

Autor:	Wilhelm Jelkmann, Anja Seibold, M. Viehrig
Rok vydání:	2006
Předmět:	education.field_of_study PEAR food.ingredient biology Population food and beverages Horticulture Erwinia biology.organism_classification Yeast Aureobasidium pullulans food Fire blight Agar education Metschnikowia pulcherrima
Zdroj:	Acta Horticulturae. :367-370
ISSN:	2406-6168 0567-7572
DOI:	10.17660/actahortic.2006.704.56
Popis:	Epiphytic yeasts are potential antagonists to fire blight in apple blossoms. They showed effects against Erwinia amylovora in field experiments and reduced symptoms on detached apple blossoms. In this study, strains of Aureobasidium pullulans and Metschnikowia pulcherrima were investigated using the immature pear fruit assay and agar diffusion assay. Population studies were performed during the flowering period to examine which parts of the blossom were colonized by the antagonists. Coculture experiments in liquid basal media with synthetic nectar resulted in suppression of E. amylovora by yeast strains. A drop of pH in the medium is partially responsible for the decrease of the E. amylovora population. The production of an antimicrobial compound might be involved. Field, greenhouse and laboratory experiments indicated that yeasts have antagonistic properties against fire blight. The mode of action could possibly be a combination of effects resulting in suppression of E. amylovora.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cefdcdbcda47bffa753e5b12628ee04f https://doi.org/10.17660/actahortic.2006.704.56 Zobrazit plný text záznamu