Fermentation and Anaerobic Respiration by Rhodospirillum rubrum and Rhodopseudomonas capsulata
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چکیده
منابع مشابه
Fermentation and anaerobic respiration by Rhodospirillum rubrum and Rhodopseudomonas capsulata.
Rhodospirillum rubrum and Rhodopseudomonas capsulata were able to grow anaerobically in the dark either by a strict mixed-acid fermentation of sugars or, in the presence of an appropriate electron acceptor, by an energy-linked anaerobic respiration. Both species fermented fructose without the addition of accessory oxidants, but required the initial presence of bicarbonate before fermentative gr...
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A Rhodopseudomonas capsulata nifH::lacZ gene fusion was used to isolate constitutive mutants of R. capsulata, unable to repress nif gene transcription anaerobically with every fixed-nitrogen source tested. When these nifc strains were grown aerobically, nif gene transcription was repressed. These results indicate that the regulation of nif gene transcription by fixed nitrogen is different from ...
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As in many other kinds of bacteria, the addition of oxygen to anaerobic photosynthetic bacteria in the dark results in the oxidation of the cytochrome pigments of the respiratory chain (1, 2). Illumination of the anaerobic bacteria results in the oxidation of the respiratory chain cytochrome system as well as at least one additional cytochrome pigment (2). This type of observation, and work on ...
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After growth in the absence of nitrogenous oxides under anaerobic phototrophic conditions, several strains of Rhodopseudomonas capsulata were shown to possess a nitrous oxide reductase activity. The enzyme responsible for this activity had a periplasmic location and resembled a nitrous oxide reductase purified from Pseudomonas perfectomarinus. Electron flow to nitrous oxide reductase was couple...
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A system for genetic exchange in Rhodopseudomonas capsulata has been discovered. Each genetic marker thus far examined can be transferred, and many strains of Rps. capsulata can participate in genetic exchange. The mechanism of gene transfer seems unlike that of any previously described bacterial system, since genes can be transferred by cell-free filtrates, but the vector is resistant to deoxy...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1982
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.149.1.181-190.1982