Antibacterial Activity of Austdiol Isolated from Mycoleptodiscus indicus against Xanthomonas axonopodis pv. passiflorae

Resumo

Plant diseases caused by bacteria result in severe losses to agriculture. The chemical study of endophytic fungi represents a potential area in the development of biological pesticides. Thus, the present work aimed to verify the antibacterial activity of the extract of the endophytic fungus Mycoleptodiscus indicus NF12 from Morinda citrifolia against Xanthomonas axonopodis pv. passiflorae, a bacterium that causes bacterial blight of passion fruit, as well as to determine which compound is responsible for the observed activity. The compound austdiol (1) was isolated by chromatographic methods from the methanolic biomass extract of the endophytic fungus M. indicus NF12 and showed bacteriostatic activity at all concentrations tested on five strains of X. axonopodis pv. passiflorae.