[Mercury-resistant bacteria from permafrost sediments and prospects for their use in comparative studies of mercury resistance determinants]. / Rezistentnye k soedineniiam rtuti bakterii iz mnogoletnemerzlykh otlozhenii i perspektivy ikh ispol'zovaniia v sravnitel'nykh issledovaniiakh determinant rtut'-ustoichivosti.
Genetika
; 38(11): 1569-74, 2002 Nov.
Article
en Ru
| MEDLINE
| ID: mdl-12500685
Mercury-resistant bacteria were isolated from permafrost sediments of Kolyma lowland and Canada existing over five thousand to two million years. Their content was shown to vary within the range 0.001-2.9% and to depend on the amount of mercury in sampling sites (coefficient of correlation 0.75). A collection of mercury-resistant bacterial strains was created. In this collection, various representatives of both Gram-positive bacteria (Bacillus, Exiguobacterium, Micrococcus, Arthrobacter) and Gram-negative bacteria (Pseudomonas, Acinetobacter, Plesiomonas, Myxobacteriales) were identified. Most resistant bacteria were found to contain determinants homologous to mer-operons of contemporary bacteria. The isolated strains of paleobacteria are proposed to be used for a comparative structural study of contemporary and ancient plasmids and transposons carrying mercury resistance determinants.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Bacterias
/
Sedimentos Geológicos
/
Farmacorresistencia Bacteriana
/
Mercurio
Tipo de estudio:
Prognostic_studies
País/Región como asunto:
America do norte
/
Asia
Idioma:
Ru
Revista:
Genetika
Año:
2002
Tipo del documento:
Article
Pais de publicación:
Rusia