Results 161 to 170 of about 8,712 (203)

Nitrite uptake in Azotobacter chroococcum

Archives of Microbiology, 1992
Nitrite uptake is made up of two components in Azotobacter chroococcum, a passive diffusion, presumably of nitrous acid, and an active transport of nitrite which uses the nitrate transport system. Only the active component is under regulatory control.
Maria T Ruiz, Francisco J. Cejudo, Antonio Paneque   +2 more
exaly   +2 more sources

Utilization of aromatic substances by Azotobacter chroococcum

Research in Microbiology, 1990
Azotobacter chroococcum utilized catechol, protocatechuic acid and gentisic acid as sole carbon source. Rothera's test indicated the ortho cleavage of phenols. The cells displayed high levels of dioxygenase activity. Catechol was cleaved by the ortho pathway mediated by catechol 1,2-dioxygenase.
S, Balajee, A, Mahadevan
openaire   +2 more sources

Degradation of Oxyfluorfen by Azotobacter chroococcum (Beijerink)

Bulletin of Environmental Contamination and Toxicology, 2002
S K, Chakraborty, A, Bhattacharyya, A, Chowdhury   +2 more
exaly   +3 more sources

Sensitivity of Azotobacter Chroococcum to some Antibiotics

Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Zweite Naturwissenschaftliche Abteilung: Allgemeine, Landwirtschaftliche und Technische Mikrobiologie, 1973
Summary Low numbers of Azotobacter , and failure of the response of crops to inoculation with organism have been attributed to inhibition by many rhizosphere organisms, like actinomycetes and bacteria which produce toxic substances, including some known antibiotics (Krasil'nikov 1954). Inhibition of Azotobacter chroococcum by penicillin was noted
E, James, S T, Shende, A, Sen
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Regulation of Azotobacter chroococcum invertase

Archives of Microbiology, 1991
Synthesis of the Azotobacter chroococcum invertase was found to be dependent on sucrose or raffinose in the growth medium. The activity of this invertase was slightly inhibited by glucose. Fructose, which by itself did not affect the enzyme activity, protected invertase from glucose inhibition.
Mercedes G. de la Vega, Francisco J. Cejudo, Antonio Paneque   +2 more
openaire   +1 more source

Biosynthesis of cytokinins by Azotobacter chroococcum

Soil Biology and Biochemistry, 1989
Abstract Cytokinins were detected in culture nitrates of Azotobacter chroococcum, A. beijerinckii, A. vinelandii, Pseudomonas fluorescens and P. putida . The most prolific producer of cytokinins was A. chroococcum . Several purine ring constituents [adenine (ADE), adenosine, adenosine-5′-monophosphate, hypoxanthine, inosine and inosine-5 ...
K.F. Nieto, W.T. Frankenberger
openaire   +1 more source

Complementation ofAzotobacter chroococcumhydrogenase mutants by clonedhupdeterminants fromBradyrhizobium japonicumandAzotobacter chroococcum [PDF]

FEMS Microbiology Letters, 1989
exaly   +2 more sources

Reduction of Nitrates by Azotobacter indicum and Azotobacter chroococcum Cultures

Applied Biochemistry and Microbiology, 2002
The capacity for denitrification was studied in Azotobacter bacteria, which are free-living nitrogen-fixing obligatory aerobes. Data on nitrate reduction to nitrites and nitric oxide by A. indicum under anaerobic conditions were obtained for the first time for genus Azotobacter.
E. K. Furina, D. A. Nikolaeva, G. A. Bonartseva, V. L. Myshkina, N. P. L'vov   +4 more
openaire   +1 more source

The hydrogen cycle in nitrogen-fixing Azotobacter chroococcum

Biochimie, 1978
H2 will support nitrogenase activity (C2H2 reduction) in Azotobacter chroococcum with or without added carbon substrate. Results show that H2 is metabolised to transfer electrons to nitrogenase and to the respiratory chain to produce ATP. H2-supported nitrogenase activity is most significant at low carbon substrate concentrations, but also occurs at ...
C C, Walker, M G, Yates
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On Carbohydrate Consumption by Azotobacter chroococcum

Annals of the Missouri Botanical Garden, 1920
In a previous paper (Allen, '19) devoted mainly to the study of the cause of beneficial action resulting from mechanical agitation of Azotobacter solution cultures, the defects of existing experimental methods for the study of the physiology of this organism were pointed out.
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