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Diazotrophic growth of Rhodopseudomonas acidophila and Rhodopseudomonas capsulata under microaerobic conditions in the dark.
Arch. Microbiol. 125, 73-77 (1980)
Diazotrophy of Rhodopseudomonas acidophila and Rhodopseudomonas capsulata was not obligatorily linked to photosynthesis. In the dark R. acidophila grew with dinitrogen as sole nitrogen source at a dissolved oxygen tension of 15 Torr (= 2.0 kPa); the doubling time was 8 h. Acetylene reduction by whole cells was more sensitive to oxygen in the light than in the dark. 16.5 mg N2 were fixed per g lactic acid consumed. R. capsulata synthesized nitrogenase and fixed dinitrogen in the dark at a dissolved oxygen tension of less than one Torr (= 0.13 kPa). The doubling time of this bacterium was 16 h and 10.5 mg N2 were fixed per g lactic acid consumed.
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Keywords
Rhodopseudomonas acidophila; Rhodopseudomonas capsulata; Diazotrophic growth in the dark; Oxygen sensitivity of nitrogenase activity; Efficiency of microaerobic N2-fixation
ISSN (print) / ISBN
0003-9276
e-ISSN
1432-072X
Journal
Archives of Microbiology
Quellenangaben
Volume: 125,
Issue: 1-2,
Pages: 73-77
Publisher
Springer
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institut für Mikrobiologie