The Antenna-Reaction Center Complex of Heliobacteria
The discovery of new species and groups of photosynthetic bacteria, as well as the results of 16 S r-RNA sequence analysis have led to a basic revision of the traditional taxonomy of the photosynthetic bacteria (Stackebrandt et al., 1988). At present the following divisions of photosynthetic bacteria are discerned: the purple bacteria, the green sulfur bacteria, the green filamentous (or gliding) bacteria, and the heliobacteria. Of these four groups, the least known are the heliobacteria. This is not surprising, because the first species of this group was discovered only a few years ago, when Gest and Favinger (1983) reported the isolation of Heliobacterium chlorum from a soil sample from the Indiana University campus. Since then, two other species have been found, Heliobacillus mobilis (Beer-Romero and Gest, 1987) and Heliospirillum gestii. The latter two species were isolated from rice paddies in Thailand.
KeywordsPhotosynthetic Bacterium Purple Bacterium Green Sulfur Bacterium Mobilis Membrane Basic Revision
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