Summary
The present paper reports the isolation of an obligate phototrophic bacterium which belongs to the Rhodospirillum fulvum-group on the basis of its colour, morphology, nutritional requirements and strictly anaerobic nature. p-Aminobenzoic acid was shown to be the only growth factor required.
Rhsp. fulvum synthesizes bacteriochlorophyll a as its only chlorophyllous pigments. The carotenoid composition comprises lycopene (I) and rhodopin (II) as the major components; traces of 1,2,1′,2′-tetrahydro-1,1′-dihydroxy-lycopene (III) were also present.
Zusammenfassung
Es wird die Isolierung eines obligat phototrophen Bakteriums beschrieben, welches auf Grund seiner Farbe, Morphologie, Nährstoff-Bedürfnisse und streng anaeroben Lebensweise in die Rhodospirillum fulvum-Gruppe eingeordnet wird. Als einzigen Wachstumsfaktor benötigt der Stamm p-Aminobenzoesäure.
Rhsp. fulvum bildet Bacteriochlorophyll a als einzigen chlorophyllartigen Farbstoff. Die Hauptmenge der Carotinoide besteht aus Lycopin (I) und Rhodopin (II); es sind außerdem Spuren von 1,2,1′2′-Tetrahydro-1,1′-dihydroxy-Lycopin (III) nachgewiesen.
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Peennig, N., Eimhjellen, K.E. & Jensen, S.L. A new isolate of the rhodospirillum fulvum group and its photosynthetic pigments. Archiv. Mikrobiol. 51, 258–266 (1965). https://doi.org/10.1007/BF00408142
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DOI: https://doi.org/10.1007/BF00408142