Effectiveness of Radiant SC 12% on superoxide dismutase (SOD) and catalase (CAT) activities in storage pest Rice weevil, Sitophilus oryzae L.
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 5
Abstract
Radiant SC12% (Spinetoram) is a new generation of spinosyn group. Evaluated the efficacy of different concentrations of spinosad against adults of the rice weevil, Sitophilus oryzae were studied in the laboratory. The highest effect of different concentrations in laboratory were recorded 55 and 31% adult mortality after 4 days for the two concentrations (1.87 and 0.93 ppm), while they caused 100% mortality of adult after 6 and 8 days respectively, Antioxidant defense components protect insects by scavenging reactive oxygen species, leading to oxidative stress. The present study was investigated the effects of Radiant SC 12%, on the oxidative stress indicator, and antioxidant enzymes [superoxide dismutase (SOD) and catalase (CAT)] activities in Sitophilus oryzae tissues. There were statistically significant increases in SOD and CAT activities in the LC50/48h concentration of Radiant-treated Sitophilus oryzae compared to the control. These results indicated that Radiant causes an increase in oxidative stress and we inferred that increasing oxidative stress induces antioxidant defense mechanisms.
Authors and Affiliations
Reham Z. Hamza, Amal M. F. Al-Barty and Rania S. Rashwan
Keywords
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