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Sukhvinder Pal Singh and Zora Singh

assays of ascorbate–glutathione cycle enzymes. The extracts of enzymes involved in the ascorbate–glutathione cycle were prepared and assays were performed as previously described ( Singh et al., 2012 ). The activities of ascorbate peroxidase (APX

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Emily B. Merewitz and Sha Liu

measure the activity of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), ascorbate peroxidase (APX), and the level of lipid peroxidation. For SOD analysis, the reaction solution (3 mL) contained 50 m m phosphate buffer (pH 7.8), 60 m m

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Li-Juan Zhang, Tian-Xiu Zhong, Li-Xin Xu, Lie-bao Han and Xunzhong Zhang

enzymes, such as SOD (EC, CAT (EC, POD (EC, and ascorbate peroxidase [APX (EC] protect plants against oxidative stress ( Blokhina et al., 2003 ). SOD constitutes the first line of defense against ROS by dismutating

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Erick Amombo, Huiying Li and Jinmin Fu

), indole-3-acetic acid (IAA), and cytokinins by tall fescue roots. The signal is transduced leading to the expression of genes that are responsible for biosynthesis superoxide dismutases (SOD) and ascorbate peroxidase (APX) enzymes to scavenge excess

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Dipayan Sarkar, Prasanta C. Bhowmik, Young-In-Kwon and Kalidas Shetty

cold stress period. Higher concentrations of ascorbate and ascorbate peroxidase were also observed in evergreens in winter ( Anderson et al., 1992 ). The importance of a balanced adjustment of electron transport and antioxidative systems for avoidance

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Wilawan Kumpoun, Takashi Nishizawa, Yoshie Motomura, Tanidchaya Puthmee and Toshiyuki Aikawa

, glutathione, tocopherol, flavonoids, alkaloids, and carotenoids. The enzymatic scavenging mechanism includes superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (POD), and ascorbate peroxidase (APX). SOD dismutates O 2 − to H 2 O 2 , then CAT, POD

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Nobuyuki Fukuoka, Takamoto Suzuki, Keisuke Minamide and Tatsuro Hamada

chlorogenic acid, a phenylpropanoid antioxidant, in Mahonia repens Plant Cell Environ. 21 513 521 Gupta, A.S. Webb, R.P. Holaday, A.S. Allen, R.D. 1993 Overexpression of superoxide dismutase protects plants from oxidative stress. Induction of ascorbate

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Hanseul Park, Eunhye Ko and Yeh-Jin Ahn

effects on plants. For example, single-walled carbon nanotubes induced the accumulation of H 2 O 2 and the expression of genes related to oxidative stress such as ascorbate peroxidase 1 and mitochondrial superoxide dismutase 1 ( Shen et al., 2010 ). At

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Jorge A. Osuna-Garcia, Jeffrey K. Brecht, Donald J. Huber and Yolanda Nolasco-Gonzalez

these antioxidant enzymes including catalase, superoxide dismutase, and ascorbate peroxidase. It is possible that inhibition of ethylene action and ethylene production in the 1-MCP-treated mangoes interfered with the fruit’s ability to recover from the

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Jun Tang, Kang-Di Hu, Lan-Ying Hu, Yan-Hong Li, Yong-Sheng Liu and Hua Zhang

tissue, POD and PPO activities are increased ( Arinze and Smith, 1982 ). When treated with H 2 S, the activities of POD are enhanced in sweetpotato slices ( Fig. 3A ), whereas the activities of catalase, ascorbate peroxidase, and superoxide dismutase are