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Rhodopseudomonas globiformis, sp. n., a new species of the Rhodospirillaceae

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Abstract

Enrichments of pH: 5.1, inoculated from a warm, acidic sulfur spring of the Yellowstone Park, yielded purple red cultures of a mobile, spherical organism belonging to the Rhodospirillaceae, described herein as a new species Rhodopseudomonas globiformis. Under favourable conditions, the cells are 1.6–1.8 μm in diameter, smaller and larger cells may occur. The photopigments consist of bacterio-chlorophyll aP and new aliphatic methoxylated ketocarotenoids. The organism grows either under anaerobic conditions in the light or under microaerophilic conditions in the dark. Biotin, p-aminobenzoic acid and a source of reduced sulfur are required as growth factors. Gluconate, mannitol, fructose and ethanol are the best carbon sources at a pH of 4.9. Growth is inhibited by low concentrations of sulfide.

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Abbreviations

DSM:

Deutsche Sammlung von Mikroorganismen

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  1. Institut für Mikrobiologie der Gesellschaft für Strahlen- und Umweltforschung mbH München, Göttingen

    Norbert Pfennig

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  1. Norbert Pfennig
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Pfennig, N. Rhodopseudomonas globiformis, sp. n., a new species of the Rhodospirillaceae. Arch. Microbiol. 100, 197–206 (1974). https://doi.org/10.1007/BF00446317

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  • DOI: https://doi.org/10.1007/BF00446317

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