Abstract
Microbiota of soil samples from Terra Nova Bay and Edmonson Point, Antarctica was observed by dilutions spread plate method. Variety of mesophilic and psychrophilic microorganisms was detected and isolated. Bacteria, actinomycetes, fungi, and microalgae occurred. Fungi genera Penicillium, Aspergillus, Paecilomyces, Cladosporium, Mortierella, Candida, Rhodotorula were found. By morphology and cell wall aminoacid composition the actinomycete genus Streptomyces was characterized. The bacteria and actinomycetes were screened for biologically active products. Some cultures formed enzymes, glycolipids and antibiotics. Psychrophilic strain Streptomyces sp. no. 8 was studied more detail and was established that it produced following antibiotics: azalomycin B, nigericin and non-polyenic macrolide antibiotic composed from two components that inhibited the growth of Gram-positive bacteria, yeasts, and phytopathogenic fungi.
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I am grateful to Dr. W. Petz for soils samples from Victoria Land, their description, a map and reprints.
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Gesheva, V. Distribution of psychrophilic microorganisms in soils of Terra Nova Bay and Edmonson Point, Victoria Land and their biosynthetic capabilities. Polar Biol 32, 1287–1291 (2009). https://doi.org/10.1007/s00300-009-0625-2
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DOI: https://doi.org/10.1007/s00300-009-0625-2