In vitro antifungal activity of bacteria against Mycosphaerella fijiensis mediated by diffused and volatile metabolites
Journal Title: Biotecnología Vegetal - Year 2012, Vol 12, Issue 3
Abstract
Antagonistic microorganisms do not have a unique mode of action. Multiplicity of these is an important feature for selection as biological control agents. Black Sigatoka is considered the foliar disease with most economic impact for the banana industry worldwide. New strategies to control it are required to reduce the use of fungicides. That is why an increasing interest to find biological alternatives, such as the use of antagonistic bacteria, has risen. Assays were carried ou t to determine whether in v it r o ant ifungal activity of 20 bacterial strains against Mycosphaerella fijiensis was caused by metabolites diffused into the culture medium or volatile. Results demonstrated that 80.0% of bacterial strains tested showed in vitro antifungal activity by diffused metabolites in the culture medium and 60.0% by producing volatile metabolites. The 55.0% of strains showed both mechanisms. This feature makes these bacteria the best candidate for its selection as biological control agent.
Authors and Affiliations
Mileidy Cruz-Martín , Mayra Acosta-Suárez , Ivian Poveda , Michel Leiva-Mora , Berkis Roque , Yelenys Alvarado-Capó
Keywords
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