Imhoff, Johannes F. (2021) Roseospira. In: Bergey's Manual of Systematics of Archaea and Bacteria. . Wiley, Chichester, p. 1. DOI 10.1002/9781118960608.gbm00899.pub2.

Text 378-2021-Roseospira-Bergey s Manual of Systematics of Archaea and Bacteria - 2022 - Imhoff - Roseospira.pdf - Published Version Restricted to Registered users only Download (402kB) | Contact

Abstract

Ro.se.o.spi'ra. L. masc. adj. roseus, rosy; Gr. fem. n. spira, the spiral; N.L. fem. n. Roseospira the rosy spiral.

Proteobacteria / Alphaproteobacteria / Rhodospirillales / Rhodospirillaceae / Roseospira

Roseospira species are vibrioid to spiral shaped, anoxygenic, and phototrophic bacteria of the Rhodospirillaceae family that live in various types of marine and slightly saline habitats all over the world. The photosynthetic pigments are bacteriochlorophyll a and carotenoids of the spirilloxanthin series, and internal photosynthetic membranes are present as vesicles. They perform a phototrophic way of life using organic substrates (photoheterotrophic growth) or inorganic reduced sulfur compounds (photoautotrophic growth) as electron donors for photosynthesis. Bacteriochlorophyll biosynthesis depends on anoxic to microoxic conditions, and chemotrophic growth is possible under microoxic to oxic conditions in the light. Nitrogenase and ribulose bisphosphate carboxylase may be present. Vitamins or yeast extracts are required as growth factors. The G + C content of the DNA is 67.8–71.2 (GA), and the genome size ranges from 4.19 to 4.61 Mb.

DNA G + C content (mol%): 67.8–71.2 (GA) (type species 66.6 Tm).

Type species: Roseospira mediosalina Imhoff et al. 1998VP (synonym: “Rhodospirillum mediosalinum” Kompantseva and Gorlenko 1984).

Actions (login required)

View Item