Rhodoplanes
Bergey's Manual of Systematics of Archaea and Bacteria(2021)
Abstract
Rho.do.pla'nes. Gr. neut. n. rhodon rose; Gr. masc. n. planos a wanderer; N.L. masc. n. Rhodoplanes a red wanderer. Proteobacteria / Alphaproteobacteria / Rhizobiales / Hyphomicrobiaceae / Rhodoplanes The genus Rhodoplanes accommodates species of anoxygenic facultative phototrophic bacteria that grow optimally under anaerobic conditions in the light. They belong to the family Hyphomicrobiaceae of the order Rhizobiales within the class Alphaproteobacteria . Cells are Gram‐stain‐negative rods and multiply by budding and asymmetric cell division. Motile by means of polar, subpolar, or lateral flagella. Internal photosynthetic membranes are present as lamellar stacks parallel to the cytoplasmic membrane. Photosynthetic pigments are bacteriochlorophyll a and carotenoids of the spirilloxanthin series. Photoorganotrophy with pyruvate and some other organic acids is the best mode of growth. Straight‐chain, monounsaturated C 18:1 ω7 c is the main component of the cellular fatty acids and C 16:0 is a second major component. Ubiquinones and rhodoquinones with 10 isoprene units (Q‐10 and RQ‐10) are present. The main components of polar lipids are phosphatidylethanolamine, phosphatidylcholine, phosphatidylglycerol, and diphosphatidylglycerol. Terrestrial and freshwater bacteria having a preference for mesophilic to moderately thermophilic habitats and neutral pH. DNA G + C content (mol%) : 67.2–70.4. Type species : Rhodoplanes roseus Hiraishi and Ueda 1994 ( Rhodopseudomonas rosea Janssen and Harfoot 1991).
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