Antioxidant responses of citrus red mite, Panonychus citri (McGregor) (Acari Tetranychidae), exposed to thermal stress

作者：Yang Li Hong; Huang Hai; Wang Jin Jun^*

来源：Journal of Insect Physiology, 2010, 56(12): 1871-1876.

DOI：10.1016/j.jinsphys.2010.08.006

• Panonychus citri
• Oxidative stress
• Antioxidant enzymes
• Heat or cold shock

Relatively low or high temperatures are responsible for a variety of physiological stress responses in insects and mites Induced thermal stress was recently associated with Increased reactive oxygen species (ROS) generation which caused oxidative damage In this study we examined the time-related effect of the relatively low (0 5 10 and 15 degrees C) or high (32 35 38 and 41 C) temperatures on the activities of antioxidant enzymes including superoxide dismutase (SOD) catalase (CAT) peroxidases (PDX) and glutathione-S-transferase (GST) and the total antioxidant capacity (TEAC) of the citrus red mite Panonychus citri (McGregor) The malondialdehyde (MDA) concentration as a marker of lipid peroxidation in organisms was also measured in the citrus red mite under thermal stress conditions Results showed that SOD and GST activities were significantly Increased and play an Important role in the process of antioxidant response to thermal stress Lipid peroxidation levels increased significantly (P < 0 001) and changed in a time-dependent manner CAT and PDX activity as well as TEAC did not vary significantly and play a minor role to remove the ROS generation These results

• 出版日期2010-12
• 单位西南大学; 绵阳师范学院