Results 181 to 190 of about 32,850 (226)

Pseudolysogeny of Azotobacter phages

Virology, 1980
Abstract The establishment of a pseudolysogenic state accompanied by a phenotypic conversion in Azotobacter vinelandii strain O by phages A14, A21, A31, and A41 has been identified. Host cells can be recovered from the pseudolysogens by cultivation in phage-specific antiserum. Pseudolysogens continually give rise at a low rate to phage as a result of
B J, Thompson, E, Domingo, R C, Warner
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Azotobacter vinelandii Citrate Synthase

Biochemistry, 1995
We have purified the citrate synthase from Azotobacter vinelandii and have determined that the size of the subunit is 48,000 Da and the structure of the holoenzyme is a hexamer. This contrasts with earlier estimates that indicate a 58,000 Da subunit and a tetrameric structure.
M, Rault-Leonardon, M A, Atkinson, C A, Slaughter, C R, Moomaw, P A, Srere   +4 more
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Capsule degradation in azotobacter

Life Sciences, 1974
Abstract Enzymic degradation of Azotobacter capsular polysaccharide by the depolymerases from azotophage lysates of A . vinelandii , and from a strain of A . chroococcum was examined. The molecular size of the capsular polysaccharide was examined by molecular sieve chromatography both before and after exposure to the ...
L, Pike, R D, Humphrey, O, Wyss
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Antigens of Azotobacter

Nature, 1960
PREVIOUS attempts at studying the antigens of Azotobacter have met with only limited success. Azo and Yoshida in a brief report1 described complement-fixation by Azotobacter cells in the presence of specific antisera but gave few experimental details. Jensen and Petersen2 obtained an agglutinating antiserum for Azotobacter chroococcum.
exaly   +2 more sources

Derepression of nitrogenase in Azotobacter

Biochemical and Biophysical Research Communications, 1974
Abstract When nitrogenase in Azotobacter vinelandii 12837 is repressed by ammonia, the derepression is accelerated by endotoxin or cyclic AMP. The phenomenon appears neither to be a consequence of accelerated ammonia utilization nor altered activity of preformed enzyme. This is a unique example of an effect of endotoxin on a procaryotic system.
J E, Lepo, O, Wyss
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Acid Production by Azotobacter vinelandii

Nature, 1963
Azotobacter vinelandii has been characterized by its lack of acid production in culture1. In fact, most species of Azotobacter do not form acid, but appear to oxidize carbohydrates completely to carbon dioxide and water2. The notable exceptions to this are the acid-tolerant A. indicum (Beijerinckia indica)3 and A. macrocytogenes4 that are characterized
G H, COHEN, D B, JOHNSTONE
exaly   +3 more sources

Azotobacters as biofertilizer

2019
Azotobacters have been used as biofertilizer since more than a century. Azotobacters fix nitrogen aerobically, elaborate plant hormones, solubilize phosphates and also suppress phytopathogens or reduce their deleterious effect. Application of wild type Azotobacters results in better yield of cereals like corn, wheat, oat, barley, rice, pearl millet and
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Symbiosis of Azotobacter with Insects

Nature, 1946
IN 1912, I published (Ber. d. bot. Ges.) a preliminary note on the constant symbiosis of Aphides with Azotobacter. The entomologist, Prof. K. Aulc, of Brno, had previously (1910) found that the hitherto mysterious function of an organ in aphides and similar insects, called the pseudovitellus, was a seat of symbiotic organisms.
exaly   +3 more sources

Electron transport in Azotobacter vinelandii

Biochimica et Biophysica Acta (BBA) - Enzymology and Biological Oxidation, 1966
Summary 1. The nature and intracellular distribution of the respiratory enzyme system of Azotobacter vinelandii has been investigated. 2. Whole cells of this organism were found to contain high concentrations of ubiquinone (Q-8) but, in contrast to Azotobacter vinelandii strain O, no menaquinone (vitamin K2) was detected. 3.
C W, Jones, E R, Redfearn
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Nutritive Qualities of Azotobacter vinelandii

Journal of the American Dietetic Association, 1957
The bodies of the bacteria called Azotobacter, when dried, contain 75 per cent protein of good quality. Growing this organism on a commercial scale could conceivably add substantially to the world's supply of protein ...
L, ALMON, L, KILGORE, M, GIEGER
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