catharanthus roseus/glutation

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Sulfate reduction in Catharanthus roseus (L.) : Identification and subcellular localization of a particulate adenosine 5'-phosphosulfate-reducing activity in cells from cell suspension cultures.

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Cell homogenates from Catharanthus roseus (L.) G. Don. grown S-autotrophically on sulfate in the dark are capable of reducing adenylysulfate (APS) to cysteine. This reduction required a particulate protein fraction from the cell extract and reduced ferredoxin as the electron donor. The protein

Effects of ambient and elevated CO2 on growth, chlorophyll fluorescence, photosynthetic pigments, antioxidants, and secondary metabolites of Catharanthus roseus (L.) G Don. grown under three different soil N levels.

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Catharanthus roseus L. plants were grown under ambient (375 ± 30 ppm) and elevated (560 ± 25 ppm) concentrations of atmospheric CO2 at different rates of N supply (without supplemental N, 0 kg N ha(-1); recommended N, 50 kg N ha(-1); and double recommended N, 100 kg N ha(-1)) in open top chambers

Nicotinamide; antioxidative and DNA hypomethylation effects in plant cells.

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The effects of nicotinamide (NIC) and its natural plant metabolites nicotinic acid (NIA) and trigonelline (TRIG) were studied with respect to defense in plant cell cultures. NIC and NIA could protect against oxidative stress damage caused by 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH),

Structural and kinetic properties of adenylyl sulfate reductase from Catharanthus roseus cell cultures.

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A cDNA encoding a plant-type APS reductase was isolated from an axenic cell suspension culture of Catharanthus roseus (Genbank/EMBL-databank accession number U63784). The open reading frame of 1392 bp (termed par) encoded for a protein (Mr=51394) consisting of a N-terminal transit peptide, a PAPS

Metabolic mechanisms for anoxia tolerance and freezing survival in the intertidal gastropod, Littorina littorea.

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The gastropod mollusk, Littorina littorea L., is a common inhabitant of the intertidal zone along rocky coastlines of the north Atlantic. This species has well-developed anoxia tolerance and freeze tolerance and is extensively used as a model for exploring the biochemical adaptations that support

Silver nanoparticles containing stearic acid isolated from Catharanthus roseus: Ovicidal and oviposition-deterrent activities on Earias vittella and ecotoxicological studies

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In the recent past, many agrochemicals have been used to control pests, but many of these fail due to the development of resistance. Many researchers, therefore, concentrate on developing new pesticide formulations from natural resources (plants/microorganism). In the present study, different

Antioxidant potentials and ajmalicine accumulation in Catharanthus roseus after treatment with giberellic acid.

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Changes in antioxidant potentials and indole alkaloid, ajmalicine, production were studied in Catharanthus roseus (L.) G. Don. plants under treatment with gibberellic acid (GA(3)). The GA(3) treatments were given in two ways, foliar spray and soil drenching methods on 30, 45, 60 and 75 days after

Antioxidant potential and indole alkaloid profile variations with water deficits along different parts of two varieties of Catharanthus roseus.

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The variations in antioxidant potentials and indole alkaloid content were studied in the present investigation, in two varieties (rosea and alba) of Catharanthus roseus, an important herb used in traditional as well as modern medicine, exposed to water deficit stress. The antioxidant and alkaloid

Water deficit stress effects on reactive oxygen metabolism in Catharanthus roseus; impacts on ajmalicine accumulation.

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In the present work, we have analysed the changes in the reactive oxygen metabolism of Catharanthus roseus (L.) G. Don. plants in terms of H(2)O(2) content, lipid peroxidation and the free radical quenching systems (non-enzymatic and enzymatic antioxidants) under drought stress. In addition to this,

Effect of salinity and different nitrogen sources on the activity of antioxidant enzymes and indole alkaloid content in Catharanthus roseus seedlings.

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The activities of antioxidant enzymes viz. glutathione reductase, GR; superoxide dismutase, SOD; peroxidase, POD; catalase, CAT and glutathione-S-transferase, GST and alkaloid accumulation were investigated in leaf pairs (apical, middle, basal) and in roots of Catharanthus roseus seedlings under the

Salicylic acid alters antioxidant and phenolics metabolism in Catharanthus roseus grown under salinity stress.

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BACKGROUND Salicylic acid (SA) acts as a potential non-enzymatic antioxidant and a plant growth regulator, which plays a major role in regulating various plant physiological mechanisms. The effects of salicylic acid (SA; 0.05 mM) on physiological parameters, antioxidative capacity and phenolic

Plant defense metabolism is increased by the free radical-generating compound AAPH.

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Effects of the free radical-generating substance 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH) on defense systems in plant tissue cultures were investigated. Exposure of Catharanthus roseus, C. tricophyllus, and Pisum sativum cultures to AAPH caused altered levels of reduced and oxidized

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