Results 131 to 140 of about 713 (164)

On the mechanism of photoinduced carotenoid synthesis: Aspects of the photoinductive reaction

Archives of Biochemistry and Biophysics, 1964
Abstract Photoinduced carotenoid synthesis has been studied in two species of mycobacteria, Mycobacterium marinum and an unclassified species. The action spectra of photo-induction have been shown to be markedly different for these two organisms. The action spectrum for the Mycobacterium sp.
P P, BATRA, H C, RILLING
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Aspects of photoinduction of carotenogenesis in the fungus Verticillium agaricinum

Physiologia Plantarum, 1982
An action spectrum for light induced carotenogenesis in Verticillium agaricinum (Link) Corda (ATCC 24668) was obtained by exposing mycelial pads to monochromatic radiation. Action maxima occurred at 290 (main peak) and 390 nm, and there was a minor peak at 483 nm. The results also showed interaction between the blue and UV light.
K. C. Hsiao, L. O. Björn
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Photoinduction of phenylalanine deaminase in gherkin seedlings

Planta, 1967
1. Exposure of dark-grown gherkin seedlings to blue light causes temporary changes in the level of phenylalanine deaminase (PADAse). Following a time lag of about 90 min the enzyme level increases; about 180 min after the beginning of irradiation it declines again. 2. The light-induced increase in the level of PADAse is due to de-novo enzyme synthesis,
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Photoinduction of phenylalanine deaminase in gherkin seedlings

Planta, 1970
1. The temperature dependence of each of the three phases (lag phase, increase of the enzyme level, decrease of this level) of the photoinduced development of phenylalanine deaminase (PADAse) in gherkin seedlings has been determined. 2. For the temperature range of 12-32°, the higher efficiency of the irradiation at a higher temperature is compensated ...
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Photoinduction of cataracts in rat lens in vitro. Preventive effect of pyruvate

Experimental Eye Research, 1990
Intact rat lenses were incubated in riboflavin-containing Tyrode solution or medium-199, generating photochemically active species of oxygen and the oxidative stress measured in terms of the decrease in active accumulation of rubidium, and the fall in the levels of glutathione and ATP.
S D, Varma, P S, Devamanoharan, S M, Morris   +2 more
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An action spectrum for photoinduction of pileus formation in a basidiomycete, Favolus arcularius

Planta, 1974
The action spectrum for photoinduction of pileus formation in Favolus arcularius (Fr.) Ames. shows four maxima, at ca. 375-385, 420, 446, and 480 nm, and minima near 365, 400, 435, and 470 nm. Wavelengths above 510 nm were ineffective. The maxima coincided with four of the six maxima for primordium formation of this fungus, but the two maxima for the ...
Y, Kitamoto, T, Horikoshi, A, Suzuki
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PHOTOINDUCTION AND PHOTOREVERSAL OF THE NOSTOCACEAN DEVELOPMENTAL CYCLE¹

Journal of Phycology, 1966
SUMMARY The developmental cycle of Nostoc muscorum, a nitrogen‐fixing blue‐green alga, is controlled by the spectral quality of illumination. Red light with peak activity at 650 mμ induces development of filaments from a nonfilamentous (aseriate) stage of the life cycle.
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In situ toxicity evaluations of turbidity and photoinduction of polycyclic aromatic hydrocarbons

Environmental Toxicology and Chemistry, 1996
Abstract Polycyclic aromatic hydrocarbons (PAHs) are prevalent pollutants in the aquatic environment that can cause a wide range of toxic effects. Earlier studies have shown that toxicity of PAHs can be enhanced by ultraviolet (UV) radiation.
D. Scott Ireland, G. Allen Burton Jr., George G. Hess   +2 more
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Photoinduction of albino-3 gene expression in Neurospora crassa conidia

Journal of Photochemistry and Photobiology B: Biology, 1992
The synthesis of carotenoids is induced by blue light in Neurospora crassa mycelia, while in conidia (the vegetative spores) the accumulation of carotenoids also occurs in the dark. The expression of the albino-3 (al-3) gene (coding for the carotenogenic enzyme geranyl-geranyl pyrophosphate synthetase) in isolated conidia was analysed.
Baima S, Carattoli A, Macino G, Morelli G.   +3 more
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NDE Applications of High-Resolution Photoinductive Imaging

1990
High-resolution thermal-wave images have been produced by incorporating a photoinductive sensor into an existing high-resolution photoacoustic imaging system. Four different specimens were studied: a tight fatigue crack in a 7075-T6 aluminum alloy plate, a compressed notch in the same alloy, an yttria-stabilized zirconia thermal barrier coating vapor ...
J. C. Moulder, D. N. Rose, D. C. Bryk, J. S. Siwicki   +3 more
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