Physicochemical and microbiological characteristics of groundwater from observation wells of a deep radioactive liquid waste repository

被引：0
|
作者：
T. N. Nazina
I. M. Kosareva
A. S. Davidov
T. P. Tourova
E. V. Novikova
R. R. Khafizov
A. B. Poltaraus
机构：
[1] Russian Academy of Sciences,Institute of Microbiology
[2] Russian Academy of Sciences,Institute of Physical Chemistry
[3] Mining and Chemical Plant,Engelhardt Institute of Molecular Biology
[4] Russian Academy of Sciences,undefined
来源：
Microbiology | 2000年 / 69卷
关键词：
the number of bacteria; groundwater; nitrate reduction; 16S rRNA; phylogeny; radioactive waste;
D O I：
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中图分类号：
学科分类号：
摘要：
A radioactive liquid waste repository was found to be the habitat of a rich microbial community with a high catabolic potential. Groundwater from a depth of 162–189 m contained aerobic saprotrophic and anaerobic fermentative, sulfate-reducing, and denitrifying bacteria. Nitrate-reducing bacteria residing in this groundwater were isolated in pure cultures. Based on the results of their physiological studies, 16S rRNA sequencing, and phylogenetic analysis, the microorganisms isolated were ascribed to one phylogenetic branch, the γ-subclass of gram-negative bacteria. Among six isolates, four belonged to the genusAcinetobacter, whereas two others belonged to the generaComamonas andAeromonas. The data obtained indicate that the microflora of the repository can exert a certain effect on the chemical composition of the formation fluids and bearing rocks, as well as on the migration of radionuclides
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页码：89 / 95
页数：6
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