| thioalkalicoccus limnaeus gen. nov., sp. nov., a new alkaliphilic purple sulfur bacterium with bacteriochlorophyll b. | four strains of purple sulfur bacteria containing bacteriochlorophyll b were isolated from cyanobacterial mats of soda lakes in the steppe of south-east siberia, russia. cells of all strains were cocci without gas vesicles. eventually, cells with flagella were seen in the electron microscope, but motile cells were observed very rarely in cultures. internal photosynthetic membranes were of the tubular type. photosynthetic pigments were bacteriochlorophyll b and carotenoids with spectral character ... | 2000 | 11155992 |