Nickel requirement for the formation of active urease in purple sulfur bacteria (Chromatiaceae)

1988 ◽  
Vol 150 (1) ◽  
pp. 6-10 ◽  
Author(s):  
Eckhard Bast
Keyword(s):  
Purple Sulfur Bacteria ◽  
Sulfur Bacteria ◽  
Nickel Requirement

Phototrophic purple sulfur bacteria as heat engines in the South Andros Black Hole

2007 ◽  
Vol 95 (2-3) ◽  
pp. 261-268 ◽  
Author(s):  
Rodney A. Herbert ◽  
Andrew Gall ◽  
Takashi Maoka ◽  
Richard J. Cogdell ◽  
Bruno Robert ◽  
...  
Keyword(s):  
Black Hole ◽  
Purple Sulfur Bacteria ◽  
The South ◽  
Heat Engines ◽  
Sulfur Bacteria

Thiosulfate and Sulfur Oxidation in Purple Sulfur Bacteria

2008 ◽  
pp. 101-116 ◽  
Author(s):  
Frauke Grimm ◽  
Bettina Franz ◽  
Christiane Dahl
Keyword(s):  
Sulfur Oxidation ◽  
Purple Sulfur Bacteria ◽  
Sulfur Bacteria

Effects of Metabolism and Physiology on the Production of Okenone and Bacteriochlorophyllain Purple Sulfur Bacteria

2013 ◽  
Vol 31 (2) ◽  
pp. 128-137 ◽  
Author(s):  
Derek Smith ◽  
James Scott ◽  
Andrew Steele ◽  
George Cody ◽  
Shohei Ohara ◽  
...  
Keyword(s):  
Purple Sulfur Bacteria ◽  
Sulfur Bacteria

A Study of the Performance of a High-Rate Photosynthetic Pond System

1987 ◽  
Vol 19 (12) ◽  
pp. 237-241 ◽  
Author(s):  
H. M. Pinheiro ◽  
M. T. Reis ◽  
J. M. Novais
Keyword(s):  
Sulfate Reducing Bacteria ◽  
Operating Conditions ◽  
High Rate ◽  
Purple Sulfur Bacteria ◽  
Residence Times ◽  
Sulfate Reducing ◽  
Pond System ◽  
Sulfur Bacteria ◽  
Colour Changes ◽  
Reducing Bacteria

Colour changes and other marked disturbances were observed at a high-rate photosynthetic pond system at Alcochete, Portugal. Previous chemical and microbiological tests made it possible to attribute these occurrences to the proliferation of purple sulfur bacteria, following the probable production of sulfide inside the ponds by sulfate-reducing bacteria. Results from more recent tests and observations are presented, which confirm the earlier conclusions, in addition to revealing a number of inadequacies in the ponds chosen operating conditions, which are in all probability at the origin of the observed disturbances. Corrective actions planned include a more efficient mixing of pond contents, the strict prevention of contamination with salty estuarine waters and the control of residence times and bottom sludge accumulation.

scholarly journals Thiocystis chemoclinalis sp. nov. and Thiocystis cadagnonensis sp. nov., motile purple sulfur bacteria isolated from the chemocline of a meromictic lake

2011 ◽  
Vol 61 (7) ◽  
pp. 1682-1687 ◽  
Author(s):  
Sandro Peduzzi ◽  
Allana Welsh ◽  
Antonella Demarta ◽  
Paola Decristophoris ◽  
Raffaele Peduzzi ◽  
...  
Keyword(s):  
Dna Hybridization ◽  
Phylogenetic Analyses ◽  
Distinct Species ◽  
Meromictic Lake ◽  
Purple Sulfur Bacteria ◽  
Rrna Gene ◽  
Bacterial Populations ◽  
Sulfur Bacteria ◽  
Type Strains ◽  
Sequence Similarities

Two isolates, designated CadH11T and Cad448T, representing uncultured purple sulfur bacterial populations H and 448, respectively, in the chemocline of Lake Cadagno, a crenogenic meromictic lake in Switzerland, were obtained using enrichment and isolation conditions that resembled those used for cultured members of the genus Thiocystis. Phenotypic, genotypic and phylogenetic analyses of these isolates confirmed their assignment to the genus Thiocystis. However, 16S rRNA gene sequence similarities of 98.2 % between CadH11T and Cad448T, and similarities of 97.7 and 98.5 %, respectively, with their closest cultured relative Thiocystis gelatinosa DSM 215T, as well as differences in DNA G+C content and carbon source utilization suggested that the isolates belonged to two distinct species. DNA–DNA hybridization of CadH11T and Cad448T with T. gelatinosa DSM 215T showed relatedness values of 46.4 and 60.8 %, respectively; the relatedness value between CadH11T and Cad448T was 59.2 %. Based on this evidence, strains CadH11T and Cad448T represent two novel species within the genus Thiocystis, for which the names Thiocystis chemoclinalis sp. nov. and Thiocystis cadagnonensis sp. nov. are proposed, respectively. The type strains of T. chemoclinalis sp. nov. and T. cadagnonensis sp. nov. are CadH11T ( = JCM 15112T  = KCTC 5954T) and Cad448T ( = JCM 15111T  = KCTC 15001T), respectively.

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