Results 131 to 140 of about 2,450 (173)

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.
M TERESA Ruiz, FRANCISCO Javier Cejudo, A 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

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
openaire   +2 more sources

Carbon Dots Enhance the Nitrogen Fixation Activity of Azotobacter Chroococcum

ACS Applied Materials & Interfaces, 2018
Biological nitrogen fixation is critical for the nitrogen cycle on the earth. Nitrogen-fixing bacteria, as an environmentally friendly microorganism, convert atmospheric nitrogen to available nitrogen source for plants.
Hao Li, Yuxiang Song, Hui Huang
exaly   +2 more sources

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

FEMS Microbiology Letters, 1989
M G Yates
exaly   +2 more sources

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

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

Nitrate permease from Azotobacter chroococcum

Physiologia Plantarum, 1993
Active transport systems in bacteria can be divided into two groups: those that are osmotic shock‐resistant with one single membrane protein, and those that are shock‐sensitive and have a membrane‐bound protein complex plus a soluble periplasmic protein.
A. Paneque, M. C. Muñoz‐Centeno, M. T. Ruiz, F. J. Cejudo   +3 more
openaire   +1 more source

Occurrence of Multiple Antibiotic Resistance in Azotobacter chroococcum

Zentralblatt für Mikrobiologie, 1989
Of 117 strains of Azotobacter chroococcum, isolated from local soils the antibiotic resistance pattern to ten widely used antibiotics was determined by antibiotic disk and agar plate dilution method. Over 95% of the strains were resistant to 10 micrograms ml-1 concentration of ampicillin, chloramphenicol, erythromycin and tetracycline and 70% or more ...
S S, Sindhu, V, Grover, N, Narula, K, Lakshminarayana   +3 more
openaire   +2 more sources