caa a22 4500 463159675 CHVBK 20180406164743.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10535-007-0030-z doi (NATIONALLICENCE)springer-10.1007/s10535-007-0030-z Agarwal S. Stress Physiology Laboratory, Department of Botany, JNV University, 342011, Jodhpur, Rajasthan, India aut Increased antioxidant activity in Cassia seedlings under UV-B radiation [Elektronische Daten] [S. Agarwal] Cassia auriculata L. seedlings were irradiated with ultraviolet B (UV-B) in an environment-control chamber. The two doses assayed (7.5 and 15.0 kJ m−2) induced oxidative damage with an increase in lipid peroxidation and hydrogen peroxide and a decrease in chlorophyll and total phenol contents. The ascorbate and dehydroascorbate content as well as the reduced glutathione/oxidized glutathione content and ratio were significantly increased. The UV-B stress led to significant increases of the activity of superoxide dismutase, catalase, peroxidase and polyphenol oxidase. It is suggested that Cassia seedlings try to counteract high concentrations of oxygen species produced under UV-B stress through a co-ordinated increase in the contents and activities of antioxidants involved in their detoxification. Institute of Experimental Botany, ASCR, 2007 ascorbate nationallicence catalase nationallicence glutathione nationallicence hydrogen peroxide nationallicence oxidative stress nationallicence peroxidase nationallicence phenol nationallicence polyphenol oxidase nationallicence superoxide dismutase nationallicence thiobarbituric acid reactive substances nationallicence ASA : ascorbate nationallicence CAT : catalase nationallicence DHA : dehydroascorbate nationallicence DTNB : 5,5′-dithio-bis-(2-nitrobenzoic acid) nationallicence EDTA : ethylenediaminetetraacetic acid (disodium salt) nationallicence f.m. : fresh mass nationallicence GSH : reduced glutathione nationallicence GSSG : oxidized glutathione nationallicence NADPH : reduced nicotinamide adenine dinucleotide phosphate nationallicence NBT : nitroblue tetrazolium nationallicence POX : peroxidase nationallicence PPO : polyphenol oxidase nationallicence PVP : polyvinylpyrrolidone nationallicence ROS : reactive oxygen substances nationallicence SOD : superoxide dismutase nationallicence TBA : thiobarbituric acid nationallicence TBARS : thiobarbituric acid reactive substances nationallicence Biologia Plantarum Springer Netherlands 51/1(2007-03-01), 157-160 0006-3134 51:1<157 2007 51 10535 https://doi.org/10.1007/s10535-007-0030-z text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10535-007-0030-z text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Agarwal S. Stress Physiology Laboratory, Department of Botany, JNV University, 342011, Jodhpur, Rajasthan, India aut NATIONALLICENCE 773 0- Biologia Plantarum Springer Netherlands 51/1(2007-03-01), 157-160 0006-3134 51:1<157 2007 51 10535 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer