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Green sulfur bacteria are gram-negative rod or spherical shaped bacteria. Some types of green sulfur bacteria have gas vacuoles that allow for movement. They are photolithoautotrophs, and use light energy and reduced sulfur compounds as the electron source. [12] Electron donors include H 2, H 2 S, S.
A chlorosome is a photosynthetic antenna complex found in green sulfur bacteria (GSB) and many green non-sulfur bacteria (GNsB), together known as green bacteria. [2] They differ from other antenna complexes by their large size and lack of protein matrix supporting the photosynthetic pigments.
Chlorobium aggregatum is a species which exists in a symbiotic relationship with a colorless, nonphotosynthetic bacteria. This species looks like a bundle of green bacteria, attached to a central rod-like cell which can move around with a flagellum. The green, outer bacteria use light to oxidize sulfide into sulfate.
Desulfuromonas acetooxidans is able to grow in cocultures with green sulfur bacteria such as Chlorobium (vibrioforme and phaeovibroides). The electron donor for the sulfur-reducing bacterium is acetate, coupled with elemental sulfur reduction to sulfide. The green sulfur bacterium produces H 2 re-oxidizing the H 2 S previously produced, in ...
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Chlorobium chlorochromatii, originally known as Chlorobium aggregatum, is a symbiotic green sulfur bacteria that performs anoxygenic photosynthesis and functions as an obligate photoautotroph using reduced sulfur species as electron donors. Chlorobium chlorochromatii can be found in stratified freshwater lakes. [2]
Chlorobaculum tepidum, previously known as Chlorobium tepidum, [1] is an anaerobic, thermophilic green sulfur bacteria first isolated from New Zealand. [2] Its cells are gram-negative and non-motile rods of variable length. They contain chlorosomes [3] and bacteriochlorophyll a and c. [4]
These bacteria are facultative aerobic. [3] They generally use chemotrophy when oxygen is present and switch to light-derived energy when otherwise. Most species are heterotrophs, but a few are capable of photoautotrophy. [2] The order can be divided into two suborders. Chloroflexineae ("Green FAP", "green non-sulfur bacteria") is the better ...