Endophytic actinomycetes encompass bacterial groups that are well known for the production of a diverse range of secondary metabolites. Vochysia divergens is a medicinal plant, common in the ‘‘Pantanal’’ region (Brazil) and was focus of many investigations, but never regarding its community of endophytic symbionts. During a screen- ing program, an endophytic strain isolated from the V. divergens, was investigated for its potential to show bio- logical activity. The strain was characterized as Microbis- pora sp. LGMB259 by spore morphology and molecular analyze using nucleotide sequence of the 16S rRNA gene. Strain LGMB259 was cultivated in R5A medium produc- ing metabolites with significant antibacterial activity. The strain produced 4 chemically related b-carbolines, and 3 Indoles. Compound 1-vinyl-b-carboline-3-carboxylic acid displayed potent activity against the Gram-positivebacterial strains Micrococcus luteus NRRL B-2618 and Kocuria rosea B-1106, and was highly active against two human cancer cell lines, namely the prostate cancer cell line PC3 and the non-small-cell lung carcinoma cell line A549, with IC50 values of 9.45 and 24.67 lM, respectively. 1-Vinyl-b-carboline-3-carboxylic acid also showed mod- erate activity against the yeast Saccharomyces cerevisiae ATCC204508, as well as the phytopathogenic fungi Phyl- losticta citricarpa LGMB06 and Colletotrichum gloeo- sporioides FDC83.