Phytochrome Control of the Development of Ascorbate Oxidase Activity in Mustard (Sinapis alba L.) Cotyledons
نویسندگان
چکیده
منابع مشابه
Dark Reversion of Phytochrome in Sinapis alba L.
Phytochrome in Sinapis alba L. (white mustard) seedlings undergoes both decay and reversion after an exposure to red light. This is typical of other crucifers and of dicotyledons in general. In the presence of sodium azide, decay is inhibited, and reversion continues at about the same rate as in buffer alone. The reversion has been demonstrated both in cotyledon plus hypocotyl hook and in hypoc...
متن کاملcomparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
15 صفحه اولCharacterization of Glutamine Synthetase of Roots, Etiolated Cotyledons and Green Leaves from Sinapis alba (L.)
Glutamine synthetase of roots, etiolated cotyledons and green leaves from mustard plants cannot all clearly be separated by DEAE-Sephacel chromatography. However, the enzyme of the roots, etiolated cotyledons and green leaves, respectively, differed in the kinetic properties deter mined in the crude extract. The root enzyme showed a pH-optimum of about 6.9, a Km value of 3 m M for glutamate an...
متن کاملControl by phytochrome of the level of nicotinamide nucleotides in the cotyledons of the mustard seedling.
Long-term and short-term effects of phytochrome on the levels (“tissue contents”) of NAD, N A D H ,, NADP and NADPH, were measured in the cotyledons of the mustard (Sinapis alba L.) seedling. It was found that long-term far-red light (which is considered to operate exclusively via active phytochrome, Pfr) strongly increases the levels of NADP and NADPH2 , whereas this light treatment suppresses...
متن کاملControl by Phytochrome of Cytoplasmic Precursor rRNA Synthesis in the Cotyledons of Mustard Seedlings.
The influence of phytochrome (high irradiance reaction; operationally, continuous far red light) on the incorporation of [(3)H]uridine into the cytoplasmic 2.5 megadalton precursor rRNA in the cotyledons of mustard (Sinapis alba L.) seedlings has been investigated. After irradiating 36-hour-old etiolated seedlings with 12 hours of far red light, the rate of incorporation is stimulated about 2-f...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1993
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.102.4.1237