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Effect of cold acclimation on the antioxidant defense system of two larval lepidoptera (noctuidae)

Grubor-Lajsic, G.; Block, W.; Telesmanic, M.; Jovanovic, A.; Stevanovic, D.; Baca, F.. 1997 Effect of cold acclimation on the antioxidant defense system of two larval lepidoptera (noctuidae). Archives of Insect Biochemistry and Physiology, 36 (1). 1-10. 10.1002/(SICI)1520-6327(1997)36:1<1::AID-ARCH1>3.0.CO;2-#

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Abstract/Summary

Activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), glutathione reductase (GR), glutathione-S-transferase (GST), as well as total glutathione (tGSH) concentration were analyzed in the hemolymph and fat body of the European corn borer Ostrinia nubilalis Hubn. and the Mediterranean borer Sesamia cretica Led. (Lepidoptera, Noctuidae). Controls were maintained at 8°C while experimental groups of larvae were exposed to –3°C for ten days and then to –12°C for 23 days (only for Ostrinia). Cold exposure significantly increased fat body SOD, GR, and GST activities of Ostrinia larvae. Only GST activity and tGSH levels increased significantly in Ostrinia larval hemolymph on cold exposure. In Sesamia larvae after cold exposure, hemolymph CAT activity was significantly lower, while fat body tGSH increased. The antioxidant defense systems of these two species show differences, probably influenced by their respective cold-hardiness metabolism. According to its antioxidant profile, the response of Ostrinia suggests a significant physiological alteration in its metabolism during cold exposure, indicating a compensatory mechanism. By contrast this is not evident in Sesamia.Arch. Insect Biochem. Physiol. 36:1–10, 1997

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1002/(SICI)1520-6327(1997)36:1<1::AID-ARCH1>3.0.CO;2-#
Programmes: BAS Programmes > Pre 2000 programme
ISSN: 0739-4462
Additional Keywords: antioxidant enzymes, glutathione, cold exposure, insect, Ostrinia nubialis, Sesamia cretica
Date made live: 13 Sep 2016 13:30 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/514475

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