Oxidative stress effects of abamectin and hematoporphyrin with the antioxidant efficiency in the cotton leaf worm, Spodoptera littoralis (Biosd.)

Abd El-Aziz, Nahla M.; Fahmy, Nedal M.

doi:10.21608/eajbsf.2015.17239

	Oxidative stress effects of abamectin and hematoporphyrin with the antioxidant efficiency in the cotton leaf worm, Spodoptera littoralis (Biosd.)
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Article 7, Volume 7, Issue 1, December 2015, Page 55-63 PDF (290.84 K)
Document Type: Original Article
DOI: 10.21608/eajbsf.2015.17239
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Authors
Nahla M. Abd El-Aziz¹; Nedal M. Fahmy²
¹1Entomology Department, Faculty of Science, Cairo university, Egypt
²Plant Protection Research Institute, Agricultural Research Center. Giza, Egypt
Abstract
Effects of abamectin and hematoporphyrin (HP), eco-friendly insecticides, on the concentration of the oxidative stress indicator malondialdehyde (MDA) and on the antioxidant enzymes; catalase (CAT), glutathione-S-transferase (GST); activity were studied in the 4^thinstar larvae of Spodoptera littoralis (Biosd.). There effects on glutathione (GSH) level were also investigated. MDA content was significantly increased on the 1^st day post treatment of both insecticides, but increased significantly only with HP treatment on the 5^thday of treatment. Abamectin treatment decreased GSH significantly on the 3^rd and 4^thdays, while HP treatment increased its level on the 1^st and ^2ndday post treatment. Activities of antioxidant enzymes, CAT and GST, did not show a consistent pattern with respect to abamectin and HP. These results suggest that exposure to abamectin and HP resulted in impaired enzymatic antioxidant defense capacity in 4^th instar S. littoralis larval tissues.
Keywords
Antioxidant enzymes; biopesticides; Abamectin; Porphyrins; Oxidative Stress; Spodoptera littoralis


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