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peroxidase/dacsa
L'enllaç es desa al porta-retalls
Pàgina 1 des de 456 resultats
Membrane-bound class III peroxidases: identification, biochemical properties and sequence analysis of isoenzymes purified from maize (Zea mays L.) roots.
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The occurrence of three plasma membrane-bound class III peroxidases has been demonstrated for maize (Zea mays L.) roots [Mika and Lüthje (2003) Plant Physiol. 132:1489-1498]. In the present work a novel PM-bound peroxidase (pmPOX3) was partially purified. The experimental molecular mass of the heme
Modulation of Aleurone Peroxidases in Kernels of Insect-Resistant Maize ( Zea mays L.; Pob84-C3R) After Mechanical and Insect Damage
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Peroxidases (PODs) have many biological functions during the plant life cycle. In maize kernels, endosperm PODs have been identified as biochemical contributors to resistance against Sitophilus zeamais, but their identities have not been determined. In this study, we identified these PODs and
A 3D ecotoxi-topological profile: Using concentration-time-response surfaces to show peroxidase activity in Zea mays (L.) exposed to aluminium or arsenic in hydroponic conditions
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This study sought to use concentration-time-response surfaces to show the effects of exposure to toxic (semi-)metals on peroxidase activity in higher plants as a function of exposure-concentration and exposure-time. Maize (Zea mays L.) seedlings (i.e., leaves and roots) were exposed to arsenic (as
Gibberellic acid and dwarfism effects on the growth dynamics of B73 maize (Zea mays L.) leaf blades: a transient increase in apoplastic peroxidase activity precedes cessation of cell elongation.
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The relationship between apoplastic peroxidase (EC 1.11.1.7) activity and cessation of growth in maize (Zea mays L.) leaf blades was investigated by altering elongation zone length. Apoplastic peroxidase activity in the elongation and secondary cell wall deposition zones of elongating leaf blades of
Effects of copper excess on growth, H2O2, production and peroxidase activities in maize seedlings (Zea mays L.).
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Ten day old mays seedlings (Zea mays L., var. Aligreen) cultured in hydroponic medium were treated by toxic amounts of copper (50 and 100 microM of CuSO4) during seven days. Cupric stress induced changes in growth parameters: The matter productions were more reduced in roots than in shoots. Also, a
Lignin peroxidase production by Streptomyces viridosporus T7A: use of corn oil as a carbon source.
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Lignin peroxidase (LiP) production cost should be reduced to justify its use in the control of environmental pollution. In this work, we studied the enzyme production by Streptomyces viridosporus T7A using glucose or corn oil as a carbon source having 0.65% yeast extract as a nitrogen source. Enzyme
Identification of B6T173 (ZmPrx35) as the prevailing peroxidase in highly insect-resistant maize (Zea mays, p84C3) kernels by activity-directed purification.
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Plant peroxidases (PODs) are involved in diverse physiological processes, including defense against pathogens and insects. Contrary to their biological importance, only very few plant PODs have been proven on protein level, because their low abundance makes them difficult to detect in standard
Heme-independent soluble and membrane-associated peroxidase activity of a Zea mays annexin preparation.
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Annexins are cytosolic proteins capable of reversible, Ca(2+)-dependent membrane binding or insertion. Animal annexins form and regulate Ca(2+)-permeable ion channels and may therefore participate in signaling. Zea mays (maize) annexins (ZmANN33 and ZmANN35) have recently been shown to form a
Cloning and biochemical characterization of an anionic peroxidase from Zea mays.
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We have isolated, cloned and characterized a cDNA from Zea mays L., denoted ZmAP1, coding for an anionic peroxidase. The open reading frame of ZmAP1 starting 72 residues from the 5' end of the cDNA predicts a 37,778 dalton protein of 356 amino acid residues. The protein has high similarity to other
[Antimutagenic activity of plant extracts from Armoracia rusticana, Ficus carica and Zea mays and peroxidase in eukaryotic cells].
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Antimutagene activity and high efficiency of antimutagene action of plant extracts from horseradish roots (Armoracia rusticana), fig brunches (Ficus carica) and mays seedlings (Zea mays) and their ability to decrease the frequency of spontaneous and induced by gamma-rays chromosome aberrations in
Membrane-bound guaiacol peroxidases from maize (Zea mays L.) roots are regulated by methyl jasmonate, salicylic acid, and pathogen elicitors.
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Plant peroxidases are involved in numerous cellular processes in plant development and stress responses. Four plasma membrane-bound peroxidases have been identified and characterized in maize (Zea mays L.) roots. In the present study, maize seedlings were treated with different stresses and signal
Copper-induced oxidative stress in maize shoots (Zea mays L.): H2O2 accumulation and peroxidases modulation.
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The effect of copper excess on growth, H2O2 level and peroxidase activities were studied in maize shoots. Ten-day-old seedlings were cultured in nutrient solution that contained Cu2+ ions at various concentrations (50 and 100 microM) for seven days. High concentrations of Cu2+ ions caused
[Physical mapping of the genes px and cld coding peroxidase and cold-regulated protein in maize (Zea mays L.)].
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Peroxidase plays a key role in plant disease resistance, cold stress and some developmental processes, and cold-regulated protein functions necessarily in reaction of plants on cold or heat stress. Recent studies showed that these processes in plant cells were involved in programmed cell death
Hydroxamate-Stimulated O(2) Uptake in Roots of Pisum sativum and Zea mays, Mediated by a Peroxidase : Its Consequences for Respiration Measurements.
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Low concentrations of salicylhydroxamic acid (<5 millimolar) stimulate O(2) uptake in intact roots of Pisum sativum. We demonstrate that the hydroxamate-stimulated O(2) uptake does not reside in the mitochondria. We also show that the hydroxamate-stimulated O(2) uptake is due to the activation of a
Effects of fish oil, corn oil and lard diets on lipid peroxidation status and glutathione peroxidase activities in rat heart.
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In this study, we investigated the effect of various types of fats on heart lipid peroxidation status and on blood lipid parameters. Rats were fed either a low-fat diet (2.2% lard plus 2.2% corn oil), a corn oil diet (17%), a salmon oil diet (12.5%) supplemented with 4.5% corn oil, or a lard diet
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