Results 131 to 140 of about 1,879 (172)
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Studies on Azotobacter chroococcum
Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Zweite Naturwissenschaftliche Abteilung: Mikrobiologie der Landwirtschaft, der Technologie und des Umweltschutzes, 1981Summary Seeds of wheat, maize and cotton were inoculated with different strains of A. chroococcum . The performance of the strains was evaluated by conducting sowing experiments with and without basal dressing of fertilizer. Homologous selection of a pigmented strain which established better on roots of that particular crop has shown increase in ...
Rajani Apte, S.T. Shende
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Utilization of aromatic substances by Azotobacter chroococcum
Research in Microbiology, 1990Azotobacter 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
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Sensitivity of Azotobacter Chroococcum to some Antibiotics
Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Zweite Naturwissenschaftliche Abteilung: Allgemeine, Landwirtschaftliche und Technische Mikrobiologie, 1973Summary 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, 1991Synthesis 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 +2 more
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Biosynthesis of cytokinins by Azotobacter chroococcum
Soil Biology and Biochemistry, 1989Abstract 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
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Complementation ofAzotobacter chroococcumhydrogenase mutants by clonedhupdeterminants fromBradyrhizobium japonicumandAzotobacter chroococcum [PDF]
FEMS Microbiology Letters, 1989 M G Yates
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Reduction of Nitrates by Azotobacter indicum and Azotobacter chroococcum Cultures
Applied Biochemistry and Microbiology, 2002The 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 +4 more
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Nitrate permease from Azotobacter chroococcum
Physiologia Plantarum, 1993Active 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 +3 more
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Occurrence of Multiple Antibiotic Resistance in Azotobacter chroococcum
Zentralblatt für Mikrobiologie, 1989Of 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 +3 more
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The ultrastructure of vegetative cells and cysts of Azotobacter chroococcum
Archiv f�r Mikrobiologie, 1962The ultrastructure of vegetative cells and cysts of Azotobacter chroococcum shows that these two morphological forms are distinctly different. The cyst is surrounded by a multi-layered envelope consisting of the following structural elements: an irregularly outlined exocystorium and a cyst coat made up of an outer dense and an inner less dense layer ...
Y T, TCHAN +2 more
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