[Phylogenetic analysis of bacteria of extreme ecosystems].

Phylogenetic analysis of aerobic chemoorganotrophic bacteria of the two extreme regions (Dead Sea and West Antarctic) was performed on the basis of the nucleotide sequences of the 16S rRNA gene. Thermotolerant and halotolerant spore-forming bacteria 7t1 and 7t3 of terrestrial ecosystems Dead Sea identified as Bacillus licheniformis and B. subtilis subsp.

[Taxonomical status of the psychrotolerant Antarctic microorganisms].

The aerobic chemoorganotrophic bacteria, dominating in soils and phytocenosis of the Antarctic Region, on combination of morphological and biochemical properties belong to several taxons of Bacteria domain. Gram-negative strains 3189, 3415 (fam. Halomonadaceae, Halomonas sp.

[Resistance of microorganisms of coastal ecosystems of the Dead Sea to extremal factors].

Such extreme factors as UV radiation, high temperature and salinity, and also the small amount of accessible water have an influence on microorganisms of coastal ecosystems of the Dead Sea. Resistance to these factors of the microorganisms isolated from ecosystems of this region (vertical steep gorge around the Dead Sea, clay-salt plain and black highly mineralized muds) is studied. Aerobic, chemoorganotrophic, thermotolerant, moderately halophilic bacteria which, according to their morphological and physiological properties, are similar to species Gracilibacillus halotolerans, Salimicrobium album and genus Caryophanon have been isolated from these ecosystems.

[Synthesis of melanin pigments by Antarctic black yeast].

Five strains of the black yeast similar to Exophiala nigra (Nadsoniela nigra), which we have isolated from the Antarctic biotopes, are studied. At cultivation in a periodic operation the maximum level of absolutely dry biomass in five tested strains constituted 3.2-7.

[Study of expression of cytokine genes in the process of cultivation of healthy donor leukocytes].

Aim: Study of expression of cytokine genes in the process of cultivation of healthy donor leukocytes.

Materials And Methods: RNA isolated before, after 3 and 24 hours of cultivation of leukocytes of 15 healthy donors aged 19 - 32 years was the object of the study. Study of the expression of genes of 8 cytokines by the level of their mRNA was performed by using polymerase chain reactionwith reverse transcription.