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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 7
pubmed:dateCreated
2009-7-6
pubmed:databankReference
pubmed:abstractText
A novel strictly anaerobic, endospore-forming, rod-shaped, Gram-positive bacterium, designated strain SGB2(T), was isolated from a mixed culture from a pond sediment during screening for sulfate-reducing bacteria capable of degrading cyanophycin (CGP). In this study, the taxonomic characterization of this mesophilic, proteolytic Clostridium isolate and the role which it, and its phylogenetic relatives, may play in peptide degradation and in the sulfur cycle are reported. Strain SGB2(T) was a commensal strain, utilizing CGP degradation products produced by other micro-organisms. Cells were motile until sporulation, forming oval, terminal spores that swell the cells. It showed optimum growth at 34 degrees C, pH 6.6 and in the absence of NaCl. Strain SGB2(T) utilized proteinaceous compounds such as peptone, Casamino acids, gelatin and trypticase soy, in addition to several amino acids and pyruvate. Utilization of many of these compounds was enhanced in the presence of thiosulfate. The isolate was unable to use any of the carbohydrates or alcohols investigated or CGP as carbon and energy sources. Thiosulfate and elemental sulfur were used as terminal electron acceptors. Phylogenetic analysis revealed that strain SGB2(T) belongs to the low-G+C-containing Clostridiales group. It exhibited 99 % 16S rRNA gene sequence similarity to its closest relatives Clostridium thiosulfatireducens Lup21(T) and Clostridium subterminale DSM 6970(T). DNA-DNA hybridization values with these two strains were 39.4 and 42.1 %, respectively. Based on phenotypic, genotypic and phylogenetic characteristics, we conclude that the isolate represents a novel species of the genus Clostridium, Clostridium sulfidigenes sp. nov. The type strain is SGB2(T) (=DSM 18982(T) =ATCC BAA-1538(T)).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1466-5026
pubmed:author
pubmed:issnType
Print
pubmed:volume
59
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1661-5
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed-meshheading:19542123-Bacterial Proteins, pubmed-meshheading:19542123-Bacterial Typing Techniques, pubmed-meshheading:19542123-Base Composition, pubmed-meshheading:19542123-Clostridium, pubmed-meshheading:19542123-DNA, Bacterial, pubmed-meshheading:19542123-Fresh Water, pubmed-meshheading:19542123-Genes, rRNA, pubmed-meshheading:19542123-Genotype, pubmed-meshheading:19542123-Geologic Sediments, pubmed-meshheading:19542123-Molecular Sequence Data, pubmed-meshheading:19542123-Nucleic Acid Hybridization, pubmed-meshheading:19542123-Oxidation-Reduction, pubmed-meshheading:19542123-Peptide Hydrolases, pubmed-meshheading:19542123-Phenotype, pubmed-meshheading:19542123-Phylogeny, pubmed-meshheading:19542123-Plant Proteins, pubmed-meshheading:19542123-RNA, Ribosomal, 16S, pubmed-meshheading:19542123-Sequence Analysis, DNA, pubmed-meshheading:19542123-Species Specificity, pubmed-meshheading:19542123-Sulfur-Reducing Bacteria, pubmed-meshheading:19542123-Thiosulfates
pubmed:year
2009
pubmed:articleTitle
Clostridium sulfidigenes sp. nov., a mesophilic, proteolytic, thiosulfate- and sulfur-reducing bacterium isolated from pond sediment.
pubmed:affiliation
Institut für Molekulare Mikrobiologie und Biotechnologie, Westfälische Wilhelms-Universität Münster, D-48149 Münster, Germany.
pubmed:publicationType
Journal Article