Results 131 to 140 of about 1,773 (172)

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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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
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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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Nitrogen fixation by immobilized Azotobacter chroococcum

Enzyme and Microbial Technology, 1981
Abstract A nitrogen-fixing bacterium, Azotobacter chroococcum, was immobilized in 2% agar gel. The optimum partial oxygen pressure, pO2, of immobilized cells was 0.2 atm, wherea s that of native cells was 0.05 atm. When continual nitrogen fixation was performed under aerobic conditions, the nitrogenase activity of immobilized cells increased with ...
Isao Karube, Tadashi Matsunaga, Yasuo Otomine, Shuichi Suzuki   +3 more
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Acetylenreduktion durch Azotobacter chroococcum in Bodenproben

Zentralblatt für Mikrobiologie, 1987
Summary A description is given of the nitrogen fixation in samples of soil using the acetylene-reduction method. Fertilizing the soil by means of mannitol brings about an enrichment of the soil with nitrogen fixing bacteria ( Azotobacter ), even a low numbers of bacterias in the beginning so that a sufficiently high ethylene production may be ...
Ingeborg Schwebke, Helga Schröder
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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
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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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Some properties of purified nitrogenase of Azotobacter chroococcum

Biochimica et Biophysica Acta (BBA) - Enzymology, 1969
Abstract The nitrogenase of Azotobacter chroococcum was fractionated into two essential components by anaerobic chromatography and elution with MgCl2. Fraction 1, which contained iron and molybdenum, was not damaged by exposure to air for 30 min at 20° but Fraciton 2, which also contained iron but only traces of molybdenum, was completed inactivated ...
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AZOTOBACTER CHROOCOCCUM BAKTERIYASINING BIOLOGIK XUSUSIYATLARI

Аннотация Azotobacter chroococcum qishloq xo'jaligida judayam katta ahamiyatga ega ya'ni ushbu bakteriya orqali xar taraflama foydali bioog'it olish mumkin. Bioo'g'itlar kimyoviy o'g'itlarga nisbatan o'simliklarga yaxshi foyda keltiradi. A.chroococcum atmosferadagi erkin azotni o'zlashtirib o'simliklarni o'sish gormonlarini ishlab chiqib õsishini ...
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Nitrogen Fixing Azotobacter Species as Potential Soil Biological Enhancers for Crop Nutrition and Yield Stability

Frontiers in Microbiology, 2021
Adnane Bargaz, Issam Meftah Kadmiri
exaly