Abstract

Blas . to . chlo ' ris . Gr. n. blastos bud shoot; Gr. adj. chloros green; M.L. fem. n. Blastochloris green bud shoot. Proteobacteria / Alphaproteobacteria / Rhizobiales / Hyphomicrobiaceae / Blastochloris Cells are rod shaped to ovoid and motile by means of subpolar flagella. They exhibit polar growth, budding, and asymmetric cell division and form rosette‐like cell aggregates. They are Gram negative and belong to the Alphaproteobacteria . Internal photosynthetic membranes are present as lamellae underlying and parallel to the cytoplasmic membrane. Photosynthetic pigments are bacteriochlorophyll b and carotenoids . Straight‐chainmonounsaturated C 18 : 1 is the predominant component of cellular fatty acids. Ubiquinones and menaquinones are present , and the lipopolysaccharides are characterized by a 2,3‐diamino‐2,3‐deoxy‐ D ‐glucose (DAG)‐containing, phosphate‐free lipid A with amidebound C 14:0 3OH . The mol % G + C of the DNA is : 66.3–71.4. Type species : Blastochloris viridis (Drews and Giesbrecht 1966) Hiraishi 1997, 218 ( Rhodopseudomonas viridis Drews and Giesbrecht 1966, 261.)

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