Mycobiology.  2018 Mar;46(1):33-46. 10.1080/12298093.2018.1454013.

Screening and Evaluation of Yeast Antagonists for Biological Control of Botrytis cinerea on Strawberry Fruits

• Chen PH
• Chen RY
• Chou JY

• KMID: 2429137
• DOI: http://doi.org/10.1080/12298093.2018.1454013

Abstract

Gray mold (Botrytis cinerea) is one of the most common diseases of strawberries (Fragaria × ananassa Duchesne) worldwide. Although many chemical fungicides are used for controlling the growth of B. cinerea, the risk of the fungus developing chemical resistance together with consumer demand for reducing the use of chemical fungicides have necessitated an alternative method to control this pathogen. Various naturally occurring microbes aggressively attack plant pathogens and benefit plants by suppressing diseases; these microbes are referred to as biocontrol agents. However, screening of potent biocontrol agents is essential for their further development and commercialization. In this study, 24 strains of yeast with antagonistic ability against gray mold were isolated, and the antifungal activity of the volatile and diffusible metabolites was evaluated. Putative mechanisms of action associated with the biocontrol capacity of yeast strains against B. cinerea were studied through in vitro and in vivo assays. The volatile organic compounds produced by the Galactomyces candidum JYC1146 could be useful in the biological control of plant pathogens and therefore are potential alternative fungicides with low environmental impact.

Keyword

Biocontrol; Botrytis cinerea; gray mold; volatile organic compounds; yeast

MeSH Terms

Botrytis*
Fragaria*
Fruit*
Fungi
In Vitro Techniques
Mass Screening*
Methods
Plants
Volatile Organic Compounds
Yeasts*
Volatile Organic Compounds