Nitrogen-fixing cyanobacterium Trichormus variabilis of the Lake Baikal phytoplankton

A new filamentous cyanobacterial strain BAC 9610 was isolated from the lake Baikal pelagial. Data obtained by light, scanning, and transmission electron microscopy, along with 16S rRNA gene sequence analysis, allowed the bacterium identification as Trichormus variabilis, previously known as Anabaena...

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Published inMicrobiology (New York) Vol. 77; no. 6; pp. 726 - 733
Main Authors Gladkikh, A. S, Belykh, O. I, Klimenkov, I. V, Tikhonova, I. V
Format Journal Article
LanguageEnglish
Published Dordrecht Dordrecht : SP MAIK Nauka/Interperiodica 01.12.2008
SP MAIK Nauka/Interperiodica
Subjects
Anabaena variabilis
Biomedical and Life Sciences
Cyanobacteria
Experimental Articles
Life Sciences
Medical Microbiology
Microbiology
Trichormus
Russia, Siberia, Baykal L
nitrogen fixation
H gene
cyanobacteria
toxins
16S rRNA gene
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Summary:A new filamentous cyanobacterial strain BAC 9610 was isolated from the lake Baikal pelagial. Data obtained by light, scanning, and transmission electron microscopy, along with 16S rRNA gene sequence analysis, allowed the bacterium identification as Trichormus variabilis, previously known as Anabaena variabilis. Trichormus is a cyanobacterial genus not presented in the list of Baikal plankton algae; A. variabilis also hasn't been previously detected in Baikal phytoplankton. T. variabilis nitrogen fixation ability was demonstrated. The gene responsible for nitrogen fixation, nifH, was identified by PCR and was partially sequenced. No hepatotoxin synthesis genes were revealed in the strain.
Bibliography:http://dx.doi.org/10.1134/S0026261708060118
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0026-2617
1608-3237
DOI:10.1134/S0026261708060118