In:
International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, Vol. 54, No. 2 ( 2004-03-01), p. 393-399
Abstract:
A rod-shaped, slightly curved sulfate reducer, designated strain P2 T , was isolated from the sulfate–methane transition zone of a marine sediment. Cells were motile by means of a single polar flagellum. The strain reduced sulfate, thiosulfate and sulfite to sulfide and used propionate, lactate and 1-propanol as electron donors. Strain P2 T also grew by fermentation of lactate. Propionate was oxidized incompletely to acetate and CO 2 . The DNA G+C content was 48·8mol%. Sequence analysis of the small-subunit rDNA and the dissimilatory sulfite reductase gene revealed that strain P2 T was related to the genera Desulfonema , Desulfococcus , Desulfosarcina , ‘ Desulfobotulus ’, Desulfofaba , Desulfomusa and Desulfofrigus . These genera include incomplete as well as complete oxidizers of substrates. Strain P2 T shared important morphological and physiological traits with Desulfofaba gelida and Desulfomusa hansenii , including the ability to oxidize propionate incompletely to acetate. The 16S rRNA gene similarities of P2 T to Desulfofaba gelida and Desulfomusa hansenii were respectively 92·9 and 91·5%. Combining phenotypic and genotypic traits, we propose strain P2 T to be a member of the genus Desulfofaba . The name Desulfofaba fastidiosa sp. nov. (type strain P2 T =DSM 15249 T =ATCC BAA-815 T ) is proposed, reflecting the limited number of substrates consumed by the strain. In addition, the reclassification of Desulfomusa hansenii as a member of the genus Desulfofaba , Desulfofaba hansenii comb. nov., is proposed. A common line of descent and a number of shared phenotypic traits support this reclassification.
Type of Medium:
Online Resource
ISSN:
1466-5026
,
1466-5034
DOI:
10.1099/ijs.0.02820-0
Language:
English
Publisher:
Microbiology Society
Publication Date:
2004
detail.hit.zdb_id:
215062-1
detail.hit.zdb_id:
2056611-6
SSG:
12
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