Abstract
This article presents an analysis of the microbial community growing on a stainless steel plate. A sample from this plate has been tested for the rpoC gene. Dominant biofilm species (clones) were identified with the help of molecular cloning and nucleotide sequencing of a 16S rRNA gene fragment. The activities of planktonic microorganisms and biofilm microorganisms attached to the plate were compared. Seven of nineteen sequences (37%) were found to belong to the Sphingobacteria group. Analysis of 16S rRNA gene sequences cloned from natural biofilms sampled from Lake Baikal showed a great variety of microorganisms in the biofilm. The following taxonomic groups were revealed among them: sphingobacteria, α-proteobacteria, cyanobacteria, verrucomicrobia, bacilli, γ-proteobacteria, flavobacteria, and β-proteobacteria. This kind of analysis was done in Lake Baikal for the first time.
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