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Open AccessArticle

Antimicrobial Activity of Microorganisms Isolated from Ant Nests of Lasius niger

1
Gause Institute of New Antibiotics, 119021 Moscow, Russia
2
Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 117997 Moscow, Russia
3
Russian Entomological Society, 199034 Saint-Petersburg, Russia
*
Author to whom correspondence should be addressed.
Life 2020, 10(6), 91; https://doi.org/10.3390/life10060091
Received: 5 June 2020 / Revised: 19 June 2020 / Accepted: 20 June 2020 / Published: 22 June 2020
(This article belongs to the Section Microbiology and Engineering)
In this study, the microbial communities of two nests of black garden ants (Lasius niger) in the hollows of stem branches of old apple trees were found to have similar species compositions: each community contained representatives of three species from the Bacillaceae family and one species of actinomycetes from the genus Streptomyces. In total, four types of bacilli and two actinomycetes were isolated. Actinomycetes were identified as Streptomyces antibioticus-like and Streptomyces sp. None of the bacilli had antibiotic activity, whereas both streptomycetes produced antibiotics that inhibited the growth of Gram-positive bacteria in vitro, including isolates from their community. Antibiotic compounds of S. antibioticus-like strain INA 01148 (Institute of New Antibiotics) were identified as actinomycin D and its closest homologue, actinomycin A. Actinomycins presumably change the microbial community of the ant nest substrate as they act against Gram-positive bacteria and against fungi and Gram-negative bacteria. The antibiotic activity of the isolated Streptomyces sp. INA 01156 is of interest, since the substances produced by this strain inhibit the growth of drug-resistant bacteria, including methicillin-resistant Staphylococcus aureus INA 00761 (MRSA) and vancomycin-resistant strain Leuconostoc mesenteroides VKPM B-4177 (VR) (VKPM–National Collection of Industrial Microorganisms (Russian acronym)). View Full-Text
Keywords: ant nests; Lasius niger; microbial community; actinomycetes; bacilli; Streptomyces antibioticus-like; actinomycin D ant nests; Lasius niger; microbial community; actinomycetes; bacilli; Streptomyces antibioticus-like; actinomycin D
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Efimenko, T.A.; Glukhova, A.A.; Demiankova, M.V.; Boykova, Y.V.; Malkina, N.D.; Sumarukova, I.G.; Vasilieva, B.F.; Rogozhin, E.A.; Ivanov, I.A.; Krassilnikov, V.A.; Efremenkova, O.V. Antimicrobial Activity of Microorganisms Isolated from Ant Nests of Lasius niger. Life 2020, 10, 91.

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