ascorbate peroxidase
Modeling and phylogenetic analysis of chloroplast ascorbate peroxidase in Ipomea nil (L.)
... carotenoids, ascorbate and glutathione that are free-radical-scavenging ...catalase, ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase and glutathione reductase ...
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when the plant shifts from vegetative to reproductive stage. Key words : Antioxidant enzymes, ascorbate peroxidase, catalase, guaiacol peroxidase, heat stress, hydrogen peroxide, rice
... of ascorbate peroxidase (APX) and non specific peroxidase ...(a) peroxidase enzymes detoxify H 2 O 2 under high tempera- ture (b) catalase enzyme scavenges H 2 O 2 when the plant shifts from ...
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generation) also revealed large increases at the final stages of senescence. The activity of IAA oxidase remained unchanged at this time period. Probable role of antioxidants along with peroxidase(s) during senescence had been discussed. Key words: Ascorbate peroxidase, catalase, glutathione, peroxidase, senescence, superoxide dismutase
... of ascorbate peroxidase, peroxidase (o-dianisidine) and superoxide dismutase were increased in senescing leaves as compared to control leaves (freshly excised), while catalase activity showed drastic ...
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Effect of Foliar Spraying of Ascorbic Acid on Cell Membrane Stability, Lipid Peroxidation, Total Soluble Protein, Ascorbate Peroxidase and Leaf Ascorbic Acid Under Drought Stress in Grapes
... 2009). Ascorbate may play a role in regulate hydrogen peroxide produced to neutralize the hydrogen peroxide in order to stomatal closure (Chen et ...by ascorbate peroxidase becomes into water and ...
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Participation of the active oxygen forms in the induction of ascorbate peroxidase and guaiacol peroxidase under heat hardening of wheat seedlings
... of ascorbate peroxidase and guaiacol peroxidase increased after 3-6 hours af- ter the hardening and reached its maximum after 24 hours, when there was the most significant in- crease in heat ...
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Overexpression of Mitochondrial Leishmania major Ascorbate Peroxidase Enhances Tolerance to Oxidative Stress-Induced Programmed Cell Death and Protein Damage
... liferation, detoxification, DNA repair, or apoptosis (11). The detoxification of toxic mitochondrial ROS in cells occurs through a variety of cellular antioxidant enzymes, such as su- peroxide dismutase, which detoxifies ...
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Fingerprinting antioxidative activities in plants
... finding is a massive down-regulation of LUPO (Figure 6B). It returns to normal level when the plant is allowed to recover from heat treatment. In accordance with our findings, are results obtained by heat treatment of ...
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Protective role of antioxidant enzymes in chickpea (Cicer arietinum L.) genotypes under high temperature stress
... maturity [2]. The Inter-Governmental Panel on Climate Change (IPCC) of the United Nations in its recent report has confirmed the global warming trends, and projected that the globally averaged temperature of the air ...
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Impact of an atmosphere rich in sulfur dioxide on a foliose lichen species Flavoparmelia caperata (L) Hale from the El Kala National Park (northeast Algerian)
... Ascorbate peroxidase activity is carried out according to the protocol adopted by (12) ...- ascorbate buffer (50 mM NaK , 0.5 mM ascorbate , pH = ...
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The defense response in Arabidopsis thaliana against Fusarium sporotrichioides
... Keywords: Arabidopsis thaliana , Defense response, Fusarium sporotrichioides , T-2 toxin, MAP kinase, GSTs, Superoxide dismutase, Ascorbate peroxidase.. Background.[r] ...
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NICKEL ALTERS ANTIOXIDATIVE DEFENSE AND WATER STATUS IN GREEN GRAM
... antioxidants ascorbate and dehydroascorbate and decrease in the activity of catalase in the leaves, leading to accumulation of hydrogen ...of ascorbate peroxidase, peroxidase, glutathione ...
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Study of Seed Germination and Enzyme Metabolism during Allelopathic Interaction of Trianthemaportulacastrum L and Fenugreek Seeds
... In the fields, it is commonly observed that fenugreek plants are not growing to their maturity in the vicinity of Trianthema portlacastrum L. In this context, present study was conducted in laboratory to observe ...
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The effects of a variable temperature regime on the physiology of the reef building coral Seriatopora hystrix: results from a laboratory based reciprocal transplant
... Photoinhibition-derived ROS production has repeatedly been observed in corals exposed to elevated temperatures (e.g. Lesser, 1997; Downs et al., 2002), and it has been identified as a major factor eliciting the coral ...
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Development of a cooperative two-factor adaptive-evolution method to enhance lipid production and prevent lipid peroxidation in Schizochytrium sp.
... ALE: adaptive laboratory evolution; APX: ascorbate peroxidase; CAT : catalase; CDW: cell dry weight; DHA: docosahexaenoic acid; DPA: docosapentaenoic acid; EPA: eicosapentaenoic acid; [r] ...
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Antioxidant enzyme activity and initial growth of wheat, rye and bean under soil flooding
... indicates root dry matter. Total protein contentswere quantified in leaf and root fresh matter samples, as described by Bradford (1976). Superoxide dismutase (EC 1.15.1.1; SOD) enzyme activity was measured by the enzyme ...
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Leucaena leucocephala leachate compromised membrane integrity, respiration and antioxidative defence of water hyacinth leaf tissues
... Results: L. leucocephala leachate enhanced electrolyte leakage from water hyacinth leaf discs in a concentration- dependent manner. Control experiments eliminated the possibilities that increased membrane permeability in ...
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RELATIONSHIP BETWEEN ANTIOXIDANT ENZYMES AND SELF- AND CROSS- POLLINATION IN THE STYLES OF TWO PETUNIA HYBRIDA CULTIVARS
... calculated for the formation of 1 mM tetraguaiacol for 1 minute. Ascorbate peroxidase (APX) activity was measured using method of Nakano and Asada (1981). Decreasing absorbance at 290 nm considered as ...
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Transcriptomic characterization of the enzymatic antioxidants FeSOD, MnSOD, APX and KatG in the dinoflagellate genus Symbiodinium
... Results: Based on eight different ITS2 types, covering six clades, multiple protein isoforms for three of the four investigated antioxidants (ascorbate peroxidase [APX], catalase peroxidase [KatG], ...
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ALGAE AND AQUATIC MACROPHYTES RESPONSES TO COPE TO ULTRAVIOLETRADIATION - A REVIEW
... and peroxidase (POX) increased and then maintained at a relatively stable level when subjected to UV-B ...decreased. Ascorbate peroxidase (APX) activity first remained unaltered and then increased in ...
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