Thiocapsa halophila sp. nov., a new halophilic phototrophic purple sulfur bacterium

Cartigny, Pierre; Baulaigue, Renée; Matheron, Robert

doi:10.1007/bf00248613

Cited by 69 publications

(45 citation statements)

References 17 publications

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“…At present, the genus Thiohalocapsa comprises only one species, Thiohalocapsa halophila (Imhoff et al, 1998; originally described as Thiocapsa halophila Caumette et al 1991).…”

Section: T )mentioning

confidence: 99%

Thiohalocapsa marina sp. nov., from an Indian marine aquaculture pond

Kumar

Srinivas

Thiel

et al. 2009

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLO

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A spherical-shaped, phototrophic, purple sulfur bacterium was isolated in pure culture from anoxic sediment in a marine aquaculture pond near Bheemli (India). Strain JA142T is Gram-negative and non-motile. It has a requirement for NaCl (optimum of 2 % and maximum of 6 % w/v NaCl). Intracellular photosynthetic membranes are of the vesicular type. In vivo absorption spectra indicate the presence of bacteriochlorophyll a and carotenoids of the okenone series as photosynthetic pigments. Phylogenetic analysis on the basis of 16S rRNA gene sequences showed that strain JA142 T is related to halophilic purple sulfur bacteria of the genera

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“…At present, the genus Thiohalocapsa comprises only one species, Thiohalocapsa halophila (Imhoff et al, 1998; originally described as Thiocapsa halophila Caumette et al 1991).…”

Section: T )mentioning

confidence: 99%

Thiohalocapsa marina sp. nov., from an Indian marine aquaculture pond

Kumar

Srinivas

Thiel

et al. 2009

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLO

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“…Thin greenish and reddish laminated mats have been observed in particular hypersaline lagoons in the commercial salterns in the Salin-de-Giraud (Camargue, France) (Cornée, 1983;Caumette et al, 1988Caumette et al, , 1991Caumette et al, , 1994. These mats are present for most of the year and are fully developed in spring and summer, from May to September.…”

Section: Description Of Microbial Mats and Isolation Of Pure Strainsmentioning

confidence: 99%

“…In these lagoons the salinity of the water column (20-40 cm depth) ranged from 130 to 200 %. These microbial mats consisted principally of a green layer of cyanobacteria overlying a purple layer of phototrophic sulfur bacteria belonging to the family Chromatiaceae (Caumette et al, 1988(Caumette et al, , 1991(Caumette et al, , 1994.…”

Section: Description Of Microbial Mats and Isolation Of Pure Strainsmentioning

confidence: 99%

“…In these lagoons, from May to June, a laminated mat developed at the sediment surface, below the gypsum crust. The sediment was composed of a closed anoxic system containing high amounts of AVS (total acidvolatile sulfide) up to 20-40 mmol kg 21 (Caumette et al, 1991(Caumette et al, , 1994. When the salinity increased up to 300 % in July, the mat decreased gradually and then disappeared by the end of the summer.…”

Section: Description Of Microbial Mats and Isolation Of Pure Strainsmentioning

confidence: 99%

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Isolation and characterization of spirilloid purple phototrophic bacteria forming red layers in microbial mats of Mediterranean salterns: description of Halorhodospira neutriphila sp. nov. and emendation of the genus Halorhodospira

Hirschler-Réa

Matheron

Riffaud

et al. 2003

International Journal of Systematic and Evolutionary Microbiology

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Microbial mats developing in the hypersaline lagoons of a commercial saltern in the Salin-de-Giraud (Rhô ne delta) were found to contain a red layer fully dominated by spirilloid phototrophic purple bacteria underlying a cyanobacterial layer. From this layer four strains of spirilloid purple bacteria were isolated, all of which were extremely halophilic. All strains were isolated by using the same medium under halophilic photolithoheterotrophic conditions. One of them, strain SG 3105 was a purple non-sulfur bacterial strain closely related to Rhodovibrio sodomensis with a 16S rDNA sequence similarity of 98?8 %. The three other isolated strains, SG 3301 T , SG 3302 and SG 3304, were purple sulfur bacteria and were found to be very similar. The cells were motile by a polar tuft of flagella. Photosynthetic intracytoplasmic membranes of the lamellar stack type contained BChl a and spirilloxanthin as the major carotenoid. Phototrophic growth with sulfide as electron donor was poor; globules of elemental sulfur were present outside the cells. In the presence of sulfide and CO 2 good growth occurred with organic substrates. Optimum growth occurred in the presence of 9-12 % (w/v) NaCl at neutral pH (optimal pH 6?8-7) and at 30-35˚C. The DNA base composition of strains SG 3301 T and SG 3304 were 74?5 and 74?1 mol% G+C, respectively.According to the 16S rDNA sequences, strains SG 3301 T and SG 3304 belonged to the genus Halorhodospira, but they were sufficiently separated morphologically, physiologically and genetically from other recognized Halorhodospira species to be described as a new species of the genus. They are, therefore, described as Halorhodospira neutriphila sp. nov. with strain SG 3301 T as the type strain (=DSM 15116 T ).

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“…2). No close relationship was found between the novel isolates and Thiohalocapsa halophila, which also represents a coccoid, purple sulfur bacterium from marine and saline environments and contains okenone as the main carotenoid (Caumette et al, 1991). Within the genus Thiocapsa, all four strains formed a tight cluster, with 16S rDNA sequence similarities of >99 %.…”

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confidence: 93%