Aureobasidium pullulans is a ubiquitous yeast-like fungus that can be found in different environments (e.g. soil, water, air and limestone). It is well known as a naturally occurring epiphyte or endophyte of a wide range of plant species (e.g. apple, grape, cucumber, green beans, cabbage) without causing any symptoms of disease. A. pullulans has a high importance in biotechnology for the production of different enzymes, siderophores and pullulan. Furthermore A. pullulans is used in biological control of plant diseases, especially storage diseases. In addition to the beneficial aspects, A. pullulans is in a few cases associated with plant disease (e.g. stigmatomycosis on cotton).
