Affiliation:
1. Departamento de Bioquímica, Biología Molecular y Fisiología, Facultad de Ciencias, Universidad de Córdoba, Spain.
Abstract
Rhodobacter capsulatus E1F1, a phototrophic purple nonsulfur bacterium capable of photoassimilating nitrate or nitrite, grew phototrophically in the presence of mono- and dinitrophenols with acetate as a carbon source, the highest growth levels being obtained under microaerobic conditions. Utilization of 2,4-dinitrophenol was strictly light dependent, was inhibited by O2 and by ammonium, and took place with the simultaneous and stoichiometric production of 2-amino-4-nitrophenol, which accumulated in the medium and was poorly used for further growth in anaerobiosis. Metabolism of mononitrophenols was also light dependent but was activated by O2 and by ammonium. Metabolism of nitrophenols seemed to depend on inducible systems which were repressed in nitrogen-starved cells. Induction of the in vivo 2,4-dinitrophenol reducing system was strongly inhibited by chloramphenicol.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Reference29 articles.
1. Nitrosubstituted aromatic compounds as nitrogen source for bacteria;Bruhn C.;Appl. Environ. Microbiol.,1987
2. Nitrite uptake system in photosynthetic bacterium Rhodopseudomonas capsulata ElFl;Caballero F. J.;Biochim. Biophys. Acta,1986
3. Nitrate reduction by photosynthetic purple bacteria;Castillo F.;Photosynth. Res.,1982
4. Ferredoxin and the dark and light reduction of dinitrophenol;Del Campo F. F.;Biochem. Biophys. Res. Commun.,1966
5. Dutton P. L. and W. C. Evans. 1978. Metabolism of aromatic compounds by Rhodospirillaceae p. 719-726. In R. K. Clayton and W. R. Sistrom (ed.) The photosynthetic bacteria. Plenum Press New York.
Cited by
44 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献