The major objective of the present work was to isolate and identify
epiphytic yeasts from grapes and to assess their potential ability
for biological control of Aspergillus section Nigri. The usage of
microbial antagonists, which are naturally occurring on the surface
of fruits and vegetables, is a basic approach for the biological control
of plant diseases. Epiphytic yeasts are the major component of
the microbiota on the surface of plants and they are evolutionary
adapted to these ecosystems (Andrews and Harris, 2000; Beech
and Davenport, 1970). Yeasts capacity to colonize plant and grape
surfaces or wounds for long periods under dry conditions and compete
for nutrients and space with other microorganisms makes