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.)

Document Type : Original Article

Authors

¹ 1Entomology Department, Faculty of Science, Cairo university, Egypt

² Plant Protection Research Institute, Agricultural Research Center. Giza, Egypt

10.21608/eajbsf.2015.17239

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