Identification of major planktonic sulfur oxidizers in stratified freshwater lake

Planktonic sulfur oxidizers are important constituents of ecosystems in stratified water bodies, and contribute to sulfide detoxification. In contrast to marine environments, taxonomic identities of major planktonic sulfur oxidizers in freshwater lakes still remain largely unknown. Bacterioplankton...

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Bibliographic Details
Published in:PloS one 2014-04, Vol.9 (4), p.e93877-e93877
Main Authors: Kojima, Hisaya, Watanabe, Tomohiro, Iwata, Tomoya, Fukui, Manabu
Format: Article
Language:English
Subjects:
Adenosine
Analysis
Aquatic ecosystems
Bacteria
Bacterioplankton
Betaproteobacteria - genetics
Biodiversity
Biology and Life Sciences
Cloning
Community structure
Deoxyribonucleic acid
Detoxification
DNA
DNA, Bacterial - genetics
Earth Sciences
Ecology and Environmental Sciences
Ecosystems
Environmental aspects
Fresh Water - microbiology
Freshwater lakes
Genes
Genetic aspects
Genetic testing
Japan
Lakes
Marine environment
Offshore structures
Oxidation
Oxidizing agents
Plankton
Plankton - genetics
Prokaryotes
RNA
RNA, Ribosomal, 16S - genetics
rRNA 16S
Stratified water
Studies
Sulfide
Sulfur
Sulfur - metabolism
Sulfur oxidation
Sulfur-oxidizing bacteria
Taxonomy
Water depth
Water Microbiology
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Summary:Planktonic sulfur oxidizers are important constituents of ecosystems in stratified water bodies, and contribute to sulfide detoxification. In contrast to marine environments, taxonomic identities of major planktonic sulfur oxidizers in freshwater lakes still remain largely unknown. Bacterioplankton community structure was analyzed in a stratified freshwater lake, Lake Mizugaki in Japan. In the clone libraries of 16S rRNA gene, clones very closely related to a sulfur oxidizer isolated from this lake, Sulfuritalea hydrogenivorans, were detected in deep anoxic water, and occupied up to 12.5% in each library of different water depth. Assemblages of planktonic sulfur oxidizers were specifically analyzed by constructing clone libraries of genes involved in sulfur oxidation, aprA, dsrA, soxB and sqr. In the libraries, clones related to betaproteobacteria were detected with high frequencies, including the close relatives of Sulfuritalea hydrogenivorans.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0093877