| RRC ID |
5870
|
| 著者 |
Fardeau ML, Barsotti V, Cayol JL, Guasco S, Michotey V, Joseph M, Bonin P, Ollivier B.
|
| タイトル |
Caldinitratiruptor microaerophilus, gen. nov., sp. nov. isolated from a French hot spring (Chaudes-Aigues, Massif Central): a novel cultivated facultative microaerophilic anaerobic thermophile pertaining to the Symbiobacterium branch within the Firmicutes.
|
| ジャーナル |
Extremophiles
|
| Abstract |
A novel facultative microaerophilic nitrate-reducing bacterium designated CA62N(T) was isolated from a thermal spring in France. Cells were non-motile rods (2-3 x 0.2 mum) and showed low cytoplasmic density when observed under a phase-contrast microscope. Strain CA62N(T) grew at temperatures between 50 and 75 degrees C (optimum 65 degrees C) and at a pH between 6.3 and 7.9 (optimum 7.0). NaCl was not required for growth but was tolerated up to 10 gl(-1). Sulfate, thiosulfate, elemental sulfur, sulfite, and nitrite were not used as electron acceptors. Nitrate was reduced to nitrite. Strain CA62N(T) used lactate, pyruvate, glucose, mannose, fructose, and casamino acids and some amino acids as electron donors only in the presence of nitrate as electron acceptor. None of these substrates was fermented. The main end-products of glucose oxidation were acetate, CO(2), and traces of H(2). The G + C content of the genomic DNA was 70.3 mol% (HPLC techniques). Phylogenetic analysis of the small-subunit (SSU) ribosomal RNA (rRNA) gene sequence indicated that strain CA62N(T) was affiliated to the Symbiobacterium branch within the Firmicutes and had Symbiobacterium thermophilum and "S. toebii" as its closest phylogenetic relatives. On the basis of phylogenetical and physiological characteristics, strain CA62N(T) is proposed to be the type strain for the novel species in the novel genus, Caldinitratiruptor microaerophilus gen. nov., sp. nov. (DSM 22660, JCM 16183).
|
| 巻・号 |
14(3)
|
| ページ |
241-7
|
| 公開日 |
2010-5-1
|
| DOI |
10.1007/s00792-010-0302-y
|
| PMID |
20165893
|
| MeSH |
Bacteria, Anaerobic / genetics*
Base Composition / genetics
Ecosystem
Evolution, Molecular
France
Geologic Sediments
Hot Springs / microbiology*
Hot Temperature
Hydrogen-Ion Concentration
Microscopy, Electron / methods
Phenotype
Phylogeny
Polymerase Chain Reaction
Sequence Analysis, DNA
Temperature
|
| IF |
2.462
|
| 引用数 |
11
|
|
WOS 分野
|
MICROBIOLOGY
BIOCHEMISTRY & MOLECULAR BIOLOGY
|
| リソース情報 |
| 一般微生物 |
JCM 16183 |
