Metabolic analysis of Chlorobium chlorochromatii CaD3 reveals clues of the symbiosis in 'Chlorochromatium aggregatum'.

ABSTRACT: A symbiotic association occurs in 'Chlorochromatium aggregatum', a phototrophic consortium integrated by two species of phylogenetically distant bacteria composed by the green-sulfur Chlorobium chlorochromatii CaD3 epibiont that surrounds a central β-proteobacterium. The non-motile chlorobia can perform nitrogen and carbon fixation, using sulfide as electron donors for anoxygenic photosynthesis. The consortium can move due to the flagella present in the central β-protobacterium. Although Chl. chlorochromatii CaD3 is never found as free-living bacteria in nature, previous transcriptomic and proteomic studies have revealed that there are differential transcription patterns between the symbiotic and free-living status of Chl. chlorocromatii CaD3 when grown in laboratory conditions. The differ

SUBMITTER: Cerqueda-Garcia D 

PROVIDER: S-EPMC3996686 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature