| phylogenetic relationships among the chromatiaceae, their taxonomic reclassification and description of the new genera allochromatium, halochromatium, isochromatium, marichromatium, thiococcus, thiohalocapsa and thermochromatium. | sequences of the 16s rdna from all available type strains of chromatium species have been determined and were compared to those of other chromatiaceae, a few selected ectothiorhodospiraceae and escherichia coli. the clear separation of ectothiorhodospiraceae and chromatiaceae is confirmed. most significantly the sequence comparison revealed a genetic divergence between chromatium species originated from freshwater sources and those of truly marine and halophilic nature. major phylogenetic branch ... | 1998 | 9828415 |
| regiospecific enzymatic oxygenation of cis-vaccenic acid during aerobic senescence of the halophilic purple sulfur bacterium thiohalocapsa halophila. | a regiospecific oxygenation of the allylic carbon 10 of cis-vaccenic acid has been observed in senescent cells of the halophilic purple sulfur bacterium thiohalocapsa halophila incubated under aerobic conditions in darkness. the results obtained strongly suggest that these enzymatic processes involve the initial dioxygenase-mediated formation of 1 o-hydroperoxyoctadec-cis-11-enoic acid, which is not accumulated in the cells of t. halophila owing to its high cytotoxic properties. deuterium labeli ... | 2002 | 12120951 |
| thiohalocapsa marina sp. nov., from an indian marine aquaculture pond. | 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 a ... | 2009 | 19620368 |
| novel magnetite-producing magnetotactic bacteria belonging to the gammaproteobacteria. | two novel magnetotactic bacteria (mtb) were isolated from sediment and water collected from the badwater basin, death valley national park and southeastern shore of the salton sea, respectively, and were designated as strains bw-2 and ss-5, respectively. both organisms are rod-shaped, biomineralize magnetite, and are motile by means of flagella. the strains grow chemolithoautotrophically oxidizing thiosulfate and sulfide microaerobically as electron donors, with thiosulfate oxidized stoichiometr ... | 2011 | 21776027 |