Results 151 to 160 of about 2,035 (203)

Agroclavine hydroxylase of Claviceps purpurea

Biochimica et Biophysica Acta (BBA) - General Subjects, 1970
Abstract The 60–80% ammonium sulfate fraction of Claviceps purpurea PRL 1980 catalyzed the conversion of agroclavine to elymoclavine. The reaction required NADPH. EDTA and cyanide inhibited the reaction. Agroclavine increased the rate of oxidation of NADPH. The increase in rate was 4.8 μmoles NADPH per h mg protein at 25° and pH 7.0.
J C, Hsu, J A, Anderson
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The Infection of Rye Callus With Claviceps purpurea

Journal of the American Pharmaceutical Association (Scientific ed.), 1959
Abstract The methods and results of inoculating callus cultures of rye( Secale cereale ) with ergot ( Claviceps purpurea ) are described. The fungus grows intercellularly and invades some cells, but does not produce alkaloids.
D P, CAREW, A E, SCHWARTING
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Enzymatic Methylation of Nicotinamide by Claviceps purpurea

Journal of Pharmaceutical Sciences, 1964
Soluble supernatant fractions from two strains of Claviceps purpurea were tested for the presence of enzymes capable of methylating tryptamine, 5-hydroxytryptamine, tyramine, and nicotinamide. The latter compound was the only one of the substrates tested in which methylation took place.
R C, AUDETTE, L R, WORTHEN, H W, YOUNGKEN   +2 more
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Succinate dehydrogenase in the ergot fungus claviceps purpurea☆

Biochimica et Biophysica Acta, 1963
Abstract 1. 1. A study of electron transport by cell extracts of the parasitic fungus Claviceps purpurea revealed a succinate dehydrogenase (EC 1.3.99.1) which appeared unique among mammalian and microbial succinate dehydrogenases so far studied in respect to ease of solubilization, solubility and stability, freedom from cytochrome contamination,
J K, MCDONALD, J A, ANDERSON, V H, CHELDELIN, T E, KING   +3 more
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Host infection by Claviceps purpurea

Transactions of the British Mycological Society, 1980
Infection of wheat and rye by Claviceps purpurea and its subsequent sphacelial development was investigated by light and electron microscopy. Penetration occurred via the stigma and ovary wall and colonization was intercellular. Pectolytic enzymes were detected both in submerged cultures of the fungus and in infected ovaries and may play a part in ...
Barbara I. Shaw, P.G. Mantle
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Parasitic differentiation of Claviceps purpurea

Transactions of the British Mycological Society, 1980
The origin and progress of differentiation of sclerotial tissues of Claviceps purpurea within the parasitic sphacelium is described. Light microscopy revealed early differentiation adjacent to conidiogenous tissue in a superficial region 12 days after inoculation.
Barbara I. Shaw, P.G. Mantle
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A GLUCAN PRODUCED BY CLAVICEPS PURPUREA

Canadian Journal of Chemistry, 1963
A glucan is produced by pure cultures of Claviceps purpurea (Fr.) Tul., PRL 1980, and its formation appears to be related to the accumulation of other shunt products such as ergot alkaloids, polyols, and trehalose. The glucan consists of β-D-glucopyranosyl units, most of which constitute a (1 → 3)-linked main chain.
A. S. Perlin, W. A. Taber
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Resistance to Claviceps purpurea in Spring and Durum Wheat

Nature, 1970
THE ergot fungus, Claviceps purpurea (Fr.) Tul., is common on cereals and grasses throughout the temperate regions of North America1,2. It is often severe on rye (Secale cereale L.) and durum wheat (Triticum durum Desf.) and in recent years it has also been troublesome on Triticale (Triticum sp. × S.
R G, Platford, C C, Bernier
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Delimitation of cryptic species inside Claviceps purpurea

Fungal Biology, 2015
Claviceps purpurea is an ovarian parasite infecting grasses (Poaceae) including cereals and forage plants. This fungus produces toxic alkaloids and consumption of contaminated grains can cause ergotism in humans and other mammals. Recent molecular genetics studies have indicated that it included three cryptic species (G1, G2, G3).
Sylvie Pažoutová, Kamila Pešicová, Milada Chudíčková, Petr Šrůtka, Miroslav Kolařík   +4 more
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ESTIMATION OF ERGOT ALKALOIDS IN CULTURES OF CLAVICEPS PURPUREA

Canadian Journal of Microbiology, 1959
Methods for estimating the content of ergot alkaloids in cultures of Claviceps purpurea have been examined to select a simple but reliable assay procedure for evaluating the effects of cultural conditions and strain differences on yield. Modification of a solvent extraction method used for ergot sclerotia gave the most satisfactory results ...
L C, VINING, W A, TABER
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