Exemplar Abstract for Prosthecochloris aestuarii Gorlenko 1970 (Approved Lists 1980) emend. Hahnke et al. 2016.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Prosthecochloris Aestuarii

Structural Studies on Chlorosomes from Prosthecochloris Aestuarii

1988 ◽  
pp. 3-14 ◽  
Author(s):  
W. Wullink ◽  
E. F. J. van Bruggen
Keyword(s):  
Structural Studies ◽  
Prosthecochloris Aestuarii

scholarly journals Experimental Study of Interactions between Purple and Green Sulfur Bacteria in Sandy Sediments Exposed to Illumination Deprived of Near-Infrared Wavelengths

2002 ◽  
Vol 68 (6) ◽  
pp. 2972-2981 ◽  
Author(s):  
Astrid Massé ◽  
Olivier Pringault ◽  
Rutger de Wit
Keyword(s):  
Mixed Culture ◽  
Near Infrared ◽  
Single Species ◽  
Fine Sand ◽  
Green Sulfur Bacteria ◽  
Infrared Light ◽  
Light Conditions ◽  
Purple Sulfur Bacterium ◽  
Prosthecochloris Aestuarii ◽  
Green Sulfur

ABSTRACT Sedimentary biofilms of the green sulfur bacterium Prosthecochloris aestuarii strain CE 2404, the purple sulfur bacterium Thiocapsa roseopersicina strain 5811, and a mixed culture of both were cultured in fine sand (100- to 300-μm grain size) within counter gradients of oxygen and sulfide. The artificial sediments were exposed to illumination deprived of near-infrared light (NIR) by filtering out the wavelengths longer than 700 nm to simulate the critical light conditions in submerged aquatic sediments. A 16 h of visible light-8 h of dark regimen was used. We studied the effects of these light conditions on the metabolisms of and interactions between both species by comparing the single species biofilms with the mixed biofilm. The photosynthesis rates of P. aestuarii were shown to be highly limited by the imposed light conditions, because the sulfide photooxidation rates were strongly stimulated when NIR was added. T. roseopersicina performed both aerobic chemosynthesis and photosynthesis, but the photosynthesis rates were low and poorly stimulated by the addition of NIR. This species decreased the penetration depth of oxygen in the sediment by about 1 mm by actively respiring oxygen. This way, the strict anaerobe P. aestuarii was able to grow closer to the surface in the mixed culture. As a result, P. aestuarii benefited from the presence of T. roseopersicina in the mixed culture, which was reflected by an increase in the biomass. In contrast, the density of the latter species was almost completely unaffected by the interaction. Both species coexisted in a layer of the same depth in the mixed culture, and the ecological and evolutionary implications of coexistence are discussed.

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