Полирезистентность и сверхустойчивость к тяжелым металлам антарктических микроорганизмов

• Datum: 2007
• Hauptverfasser: Таширев, А.Б., Матвеева, Н.А., Романовская, В.А., Таширева, А.А., Рокитко, П.В.
• Format: Artikel
• Sprache: Russisch
• Veröffentlicht: Видавничий дім "Академперіодика" НАН України 2007
• Schlagworte: Біологія
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/3563
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Полирезистентность и сверхустойчивость к тяжелым металлам антарктических микроорганизмов / А.Б. Таширев, Н.А. Матвеева, В.А. Романовская, А.А. Таширева, П.В. Рокитко // Доп. НАН України. — 2007. — № 11. — С. 170-175. — Бібліогр.: 11 назв. — рос.

It is shown for the first time, that in Antarctic Region (island Galindez of the Argentine archi-
 pelago) are occurred the microorganisms which are resistant to high concentrations of toxic
 heavy metals. The microorganisms which grow under aerobic conditions in the presence of
 200–500 ppm Hg2+, 1000–3000 ppm Cu2+, and 3000–60000 ppm CrO2−
 4 are isolated. Mi-
 croorganisms are characterized by a polyresistance to metals (Hg2+, Cu2+ and CrO2−
 4 ). They
 grow in the presence of these three metals separately and in their mixture. On adding glucose
 to a nutrient medium (20 g/l), microorganisms reduce CrO2−
 4 up to insoluble Cr(OH)
 .
 3nH2O.
 The absence of correlation between the resistance of microorganisms to high concentrations of
 metals and the concentration of these metals in the Antarctic soils is shown. The number of
 soil microorganisms, which are resistant to 1000 ppm Cu2+, was 106
 . . . 108
 cells/g of soil, and
 the concentration of copper in soils was in a range 13 . . . 172 ppm. Probably, the isolated mi-
 croorganisms are “retro-forms”, and their resistance to high concentrations of toxic metals was
 formed during an epoch of neotectonic activities in the Antarctic Region.