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Geographical and seasonal distribution of multiple antibiotic resistance of heterotrophic bacteria of Lake Shira / T. I. Lobova [et al.] // Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - P299-307, DOI 10.1023/A:1015618820450 . - ISSN 1386-2588
Кл.слова (ненормированные):
Ampicillin -- Brackish lake -- Halotolerance -- Heterotrophic bacteria -- Horizontal gene transfer -- Kanamycin -- Multiple antibiotic resistance -- antibiotics -- bacterium -- drug resistance -- geographical distribution -- saline lake -- salinity tolerance -- seasonal variation -- Russian Federation -- Bacteria (microorganisms)
Аннотация: From 1996 to 1999 heterotrophic bacteria of the brackish-water Lake Shira (Republic of Khakasia, Russia) were studied to understand the seasonal dynamics of their antibiotic resistance. During the winter, these bacteria were represented primarily by forms that could not be cultured and were psychrotolerant. In the summer period, heterotrophic, mesophilic bacteria increased in number. The percentages of isolates with multiple, antibiotic resistance isolated from the lake region near the resort area of the lake were 2-3 times higher than those from the central part of the lake. A decline in the bacterial numbers with multiple antibiotic resistance was observed during the cold period (February-March). Various mechanisms of multiple, antibiotic resistance of heterotrophic bacteria isolated from Shira lake are discussed.

Scopus
Держатели документа:
Institute of Biophysics of SB RAS, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Lobova, T.I.; Maksimova, E.Ye.; Popova, L.Yu.; Pechurkin, N.S.

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Antibiotic resistance of heterotrophic bacteria in Shira lake: Natural and anthropogenic impacts / T. I. Lobova, Yu. V. Barkhatov, L. Yu. Popova // Aquatic Microbial Ecology. - 2002. - Vol. 30, Is. 1. - P11-18 . - ISSN 0948-3055
Кл.слова (ненормированные):
Anthropogenic load -- Antibiotic resistance -- Brackish lake -- Halotolerance -- Heterotrophic bacteria -- Mathematical modeling -- algae -- Bacteria (microorganisms) -- Chlorophyta
Аннотация: Studies were conducted to investigate the antibiotic resistance of freshwater, halophile and moderate halotolerant bacteria isolated from the nearshore part of Shira lake, which is affected by the activity of a health resort, and from the central part of the lake in the summer (June to August) of 1999. It has been shown that the allochthonous microflora, which is brought into the lake with the resort effluent in mid-summer, is the anthropogenic factor contributing to an increase in the number of freshwater bacteria that feature multiple antibiotic resistance in the central part of the lake. It has been found that resistance to ampicillin of freshwater and halophile heterotrophic bacteria is related to the increase in the biomass of blue-green and green algae in the central part of Shira lake between mid-July and the end of August. A mathematical model has been constructed to describe the dynamics of the antibiotic resistance of heterotrophic bacteria in the close-to-resort and the central parts of Shira lake under natural and anthropogenic impacts.

Scopus
Держатели документа:
Centre Institute of Biophysics, Russian Academy of Sciences, Siberian Branch, Academgorodok 50, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Lobova, T.I.; Barkhatov, Yu.V.; Popova, L.Yu.

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Antibiotic resistance of heterotrophic bacteria in Shira lake: natural and anthropogenic impacts [Text] / T. I. Lobova, Y. V. Barkhatov, L. Y. Popova // Aquat. Microb. Ecol. - 2002. - Vol. 30, Is. 1. - P. 11-18, DOI 10.3354/ame030011. - Cited References: 33 . - ISSN 0948-3055

РУБ Ecology + Marine & Freshwater Biology + Microbiology
Рубрики:
MARINE-BACTERIA
   DIVERSITY
   POLLUTION
   COMMUNITY
   PATTERNS
   PLANTS
Кл.слова (ненормированные):
heterotrophic bacteria -- halotolerance -- antibiotic resistance -- anthropogenic load -- brackish lake -- mathematical modeling
Аннотация: Studies were conducted to investigate the antibiotic resistance of freshwater, halophile and moderate halotolerant bacteria isolated from the nearshore part of Shira lake, which is affected by the activity of a health resort, and from the central part of the lake in the summer (June to August) of 1999. It has been shown that the allochthonous microflora, which is brought into the lake with the resort effluent in mid-summer, is the anthropogenic factor contributing to an increase in the number of freshwater bacteria that feature multiple antibiotic resistance in the central part of the lake. It has been found that resistance to ampicillin of freshwater and halophile heterotrophic bacteria is related to the increase in the biomass of blue-green and green algae in the central part of Shira lake between mid-July and the end of August. A mathematical model has been constructed to describe the dynamics of the antibiotic resistance of heterotrophic bacteria in the close-to-resort and the central parts of Shira lake under natural and anthropogenic impacts.

WOS
Держатели документа:
Russian Acad Sci, Siberian Branch, Ctr Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Lobova, T.I.; Barkhatov, Y.V.; Popova, L.Y.

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Distribution of heterotrophic bacteria in Lake Shira [Text] / T. I. Lobova, L. V. Listova, L. Y. Popova // Microbiology. - 2004. - Vol. 73, Is. 1. - P. 89-93, DOI 10.1023/B:MICI.0000016375.87884.fc. - Cited References: 12 . - ISSN 0026-2617

РУБ Microbiology

Кл.слова (ненормированные):
saline lakes -- halotolerance -- mesophilic and psychrotolerant heterotrophic bacteria -- autochthonous and allochthonous microorganisms
Аннотация: A study of the horizontal and vertical distribution of heterotrophic bacteria in brackish Lake Shira in summer periods showed that mesophilic bacteria dominated in all areas of the lake, whereas psychrotolerant bacteria dominated in the metalimnion and hypolimnion of its central part. Nonhalophilic bacteria were mostly mesophilic and dominated in coastal waters. Most psychrotolerant bacteria were able to grow in the presence of 5-10% NaCl. Heterotrophic bacteria isolated in different regions of the lake were identified to a generic level. The isolates were classified into autochthonous and allochthonous microorganisms on the bases of their distribution pattern in the lake water, halotolerance, and ability to grow at low temperatures.

WOS
Держатели документа:
Russian Acad Sci, Siberian Div, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Lobova, T.I.; Listova, L.V.; Popova, L.Y.

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The influence of salt concentration on the copy number of plasmid pSH1 replicating in Micrococcus sp 9 [Text] / T. I. Lobova, S. N. Zagrebel'nyi, L. Y. Popova // Microbiology. - 2005. - Vol. 74, Is. 3. - P. 296-302, DOI 10.1007/s11021-005-0066-z. - Cited References: 19 . - ISSN 0026-2617

РУБ Microbiology
Рубрики:
CYANOBACTERIUM-SYNECHOCOCCUS SP
ENDOGENOUS PLASMID
Кл.слова (ненормированные):
saline lakes -- halotolerance -- heterotrophic bacteria -- plasmids
Аннотация: The study of heterotrophic bacteria isolated from the brackish waters of Lake Shira has shown that some of them contain plasmid pSH1 of approximately 2.7 kb in size. The number of plasmid copies in plasmid-containing strains cultivated at a minimal concentration of sodium chloride is found to be low, whereas the sub-culturing of these strains at high salt concentrations increases the plasmid number. The role of natural pSH1 plasmid in the osmotolerance of host bacteria is discussed.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Div, Krasnoyarsk 660036, Russia
Novosibirsk State Univ, Novosibirsk 630090, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Lobova, T.I.; Zagrebel'nyi, S.N.; Popova, L.Y.

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