Ocurrence of the antibiotic producing bacterium Burkholderia sp in colonies of the leaf-cutting ant Atta sexdens rubropilosa

Reference:

Santos, A. V., Dillon, R. J., Dillon, V. M., Reynolds, S. E. and Samuels, R. I., 2004. Ocurrence of the antibiotic producing bacterium Burkholderia sp in colonies of the leaf-cutting ant Atta sexdens rubropilosa. FEMS Microbiology Letters, 239 (2), pp. 319-323.

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Abstract

Fungus garden material from recently established Atta sexdens rubropilosa colonies (6-12 months old) was sampled to detect antibiotic producing microorganisms that inhibited the growth of pathogens of insects and of the fungus gardens but did not affect their mutualistic fungus. A bacterium with activity against the entomopathogenic fungus Beauveria bassiana was isolated from 56% of the gardens tested (n = 57) and identified from its biochemical profile and from 16S and 23S ribosomal DNA sequences as a member of the genus Burkholderia. The ant-associated Burkholderia isolates secreted a potent, anti-fungal agent that inhibited germination of conidia of the entomopathogenic fungi B. bassiana, Metarhizium anisopliae, of the saprophytic Verticillium lecanii, and also of a specialist fungus garden Escovopsis weberi. Growth of the ant's mutualist fungus was unaffected. (C) 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.

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