Results 161 to 170 of about 22,187 (200)
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Chemosphere, 2007
Bechmeria nivea (L.) Gaud. (ramie) seedlings subjected to a series of cadmium (Cd) concentrations (0, 1, 3 and 7 mg l(-1)) over a 10d period were investigated with regard to the uptake and distribution of Cd, its effect on membrane lipid and chlorophyll synthesis, and response of the ascorbate-glutathione cycle in both leaves and roots.
Yunguo Liu +2 more
exaly +3 more sources
Bechmeria nivea (L.) Gaud. (ramie) seedlings subjected to a series of cadmium (Cd) concentrations (0, 1, 3 and 7 mg l(-1)) over a 10d period were investigated with regard to the uptake and distribution of Cd, its effect on membrane lipid and chlorophyll synthesis, and response of the ascorbate-glutathione cycle in both leaves and roots.
Yunguo Liu +2 more
exaly +3 more sources
Function of the ascorbate‐glutathione cycle in aged sunflower seeds
Physiologia Plantarum, 1996The function of the ascorbate‐glutathione (AsA/GSH) cycle was analyzed in seeds of sunflower (Helianthus annuus L. cv. Peredovik) subjected to accelerated ageing at 43°C and 75% relative humidity for 1 to 11 days. The study was performed using dry seeds and seeds hydrated by imbibition in distilled water for 4 h at 25 °C.
M. De Paula +5 more
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Microplate quantification of enzymes of the plant ascorbate–glutathione cycle
Analytical Biochemistry, 2008Here, we describe microplate assays for determining the specific activities of four enzymes that constitute the ascorbate-glutathione cycle: APX, MDHAR, DHAR, and GR. In plants, these enzymes play a major role in detoxifying reactive oxygen species produced in cells under environmental stress.
Ramzi, Murshed +2 more
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International Journal of Molecular Sciences, 2016 Reduced forms of ascorbate (AsA) and glutathione (GSH) are among the most important non-enzymatic foliar antioxidants in maize (Zea mays L.). The survey was aimed to evaluate impact of bird cherry-oat aphid (Rhopalosiphum padi L.) or grain aphid ...
Hubert Sytykiewicz, Sytykiewicz Hubert
exaly +2 more sources
Specific features of the ascorbate/glutathione cycle in cultured protoplasts
Plant Cell Reports, 1999Protoplasts isolated from Nicotiana tabacum (L.) leaves were cultured for 6 days in liquid medium and some features of their antioxidant capacity were investigated. Ascorbate exported into the culture medium was oxidized non-enzymically, whereas important modifications of the enzymic scavenging activity were detected inside protoplasts.
A. de Marco, K. A. Roubelakis-Angelakis
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Diurnal changes of the ascorbate-glutathione cycle components in wheat genotypes exposed to drought
Functional Plant Biology, 2020The ascorbate-glutathione (AsA-GSH) cycle is a major pathway of H2O2 scavenging in plants. The effect of diurnal variations in hydrogen peroxide (H2O2) content, the intensity of lipid peroxidation (malondialdehyde, MDA), photosynthesis, antioxidants and antioxidative enzyme activities involved in AsA-GSH metabolism has been studied comparatively in ...
Durna R. Aliyeva +3 more
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Ascorbate-Glutathione Cycle and Abiotic Stress Tolerance in Plants
2017Plants confront fluctuating and in some cases intense environmental conditions, such as changes in irradiation, water availability, extreme temperatures, mineral nutrient accessibility, and air pollutants exposition among others. In order to face abiotic stress situations, the redox buffer capacity, mainly represented by ascorbic acid (AsA) and ...
Bartoli, Carlos Guillermo +4 more
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Activation of ascorbate-glutathione cycle inArabidopsis leaves in response to aminotriazole
Journal of Plant Biology, 1998Aminotriazole(AT)-induced changes in growth, hydrogen peroxide content and activities of H2O2-scavenging antioxidant enzymes were investigated in the growing leaves ofArabidopsis plants (Arabidopsis thaliana cv Columbia). Catalase activity of rosette leaves was reduced by 65% with an application of 0.1 mM AT (a herbicide known as a catalase inhibitor),
Kyong-Suk Kang +4 more
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Effect of High-Temperature Stress on Ascorbate–Glutathione Cycle in Maize
Agricultural Research, 2019High-temperature stress induces cellular changes leading to over-production of highly reactive oxygen species (ROS) which damage macromolecules and cell organelles, eventually resulting in cell death. Antioxidative metabolism in plants comprising of enzymatic and non-enzymatic antioxidants imparts tolerance by scavenging or detoxification of excess ROS.
Yogesh Kumar Tiwari, Sushil Kumar Yadav
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Free Radical Research, 1999
Plants of Nicotiana tabacum (O3-tolerant cv Bel-B and O3-sensitive cv Bel-W3) were exposed to 150 ppb of ozone for 5 h; the fumigation produced visual injury in mature leaves, particularly in Bel-W3. After O3-treatment the pigments of the xanthophyll cycle pool decreased in both cvs, with a strong reduction in violaxanthin content, while antheraxanthin
S, Pasqualini +3 more
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Plants of Nicotiana tabacum (O3-tolerant cv Bel-B and O3-sensitive cv Bel-W3) were exposed to 150 ppb of ozone for 5 h; the fumigation produced visual injury in mature leaves, particularly in Bel-W3. After O3-treatment the pigments of the xanthophyll cycle pool decreased in both cvs, with a strong reduction in violaxanthin content, while antheraxanthin
S, Pasqualini +3 more
openaire +2 more sources