Purple Sulfur Bacteria ThesisGroups of anoxygenic phototrophic bacteria established. Purple sulfur bacteria. Purple nonsulfur bacteria. Aerobic anoxygenic phototrophic purple bacteria. Further, anoxygenic photosynthesis has been demonstrated in methylotrophic bacteria and rhizobia. In this thesis puflm genes were tested for their suitability as phylogenetic markers for purple sulfur bacteria. And applied in environmental community studies as well as in polyphasic taxonomy. Puflm genes encode for the light and medium subunit of the photosynthetic reaction center type ii proteins exclusively present in the polyphyletic group of anoxygenic phototrophic purple bacteria and chloroflexaceae.
Physiological and mechanistic studies of phototrophic fe. Oxidation in purple non. Sulfur bacteria thesis by yongqin jiao in partial fulfillment of the. The family chromatiaceae. Purple sulfur bacteria. Comprises physiologically and genetically closely related species and genera. That carry out anoxygenic photosynthesis.
Characterization of a purple sulfur bacterium, strain sw26 isolated from sylt. Thesis is possible only under relatively low light and fully anoxic conhtions. Of purple sulfur bacteria in these enrichments also par.
Some purple sulfur bacteria have evolved to optimize their environmental conditions for their own growth. For example, in the south andros black hole in the bahamas, purple sulfur bacteria adopted a new characteristic in which they are able to use their metabolism to radiate heat energy into their surroundings. Sulfur bacteria can also take up low molecular weight organic compounds such as acetate. In the dark, they prefer microaerobic conditions and perform aerobic respiration. Sulfur bacteria are common in surface sediments.