Tangprasittipap, A. and Prasertsan, P. 5-aminolevulinic acid from photosynthetic bacteria and its applications Songklanakarin J. Sci. Technol., 2002, 24(4) : 717-725 This paper gives an overview on ALA production by photosynthetic bacteria concerning biosynthesis and regulation as well as its application as herbicide, insecticide and growth stimulator. Recent medical applications in the field o...

Most bacteria have the capability to adapt to changes in their environment. Facultatively phototrophic bacteria like Rhodobacter can switch from aerobic respiration to anoxygenic photosynthesis in the absence of oxygen. The formation of the photosynthetic apparatus is primarily regulated by oxygen tension. The amount of photosynthetic complexes is influenced by the light intensity in anaerobic ...

Photosynthesis is the process to convert solar energy to biomass and biofuels, which are the only major solar energy storage means on Earth. To satisfy the increased demand for sustainable energy sources, it is essential to understand the process of solar energy storage, that is, the carbon metabolism in photosynthetic organisms. It has been well-recognized that one bottleneck of photosynthesis...

BACKGROUND There is accumulating evidence that in some marine environments aerobic bacteriochlorophyll a-producing bacteria represent a significant part of the microbial population. The interaction of photosynthesis and carbon metabolism in these interesting bacteria is still largely unknown and requires further investigation in order to estimate their contribution to the marine carbon cycle. ...

A Borrelia burgdorferi secA homologue was cloned and the complete DNA sequence was determined. The deduced protein sequence consists of 899 amino acids and shows a high degree of homology to SecA homologues from other Bacteria and photosynthetic plastids. The presence of the secA gene in Spirochetes suggests that this gene is present in most if not all major lineages within Bacteria. The ease o...

Carbon dixoide is reduced anaerobically to cell substance and water by the hydrogen donor H%A through the agency of photosynthetic pigments with the absorption of radiant energy. Two more or less clear-cut groups ca be distinguished among the purple bacteria on the basis of their physiological characteristics. One group, the sulfur purple bacteria (family Thiorhodeae Molihch, 1907) can develop ...

Autotrophic organisms can use carbon dioxide as their sole source of carbon. Within this group, the chemosynthetic bacteria secure energy for carbon dioxide assimilation by the oxidation of simple inorganic substances, although the photosynthetic organisms obtain this energy from light. The phylogenetic relationships of the chemosynthetic bacteria to the photosynthetic and to the heterotrophic ...