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Effect of Bacillus thuringansis var kurstaki on some biochemical parameters of the cotton leaf worm Spodoptera littoralis (Biosd)
• 2008
Publication Information
Authors
M.W.F.Younes, Y.A.Elsayed and M.M.A. Hegazy
Keywords
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Journal
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Issue
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Pages
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publication.type
Local
Paper Link
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Supplementary Materials
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Abstract
The present study was planned to elucidate the effect of LC30 of Bacillus thuringiensisvarkurstaki on the enzymatic activity of non specificesterases ( - and -esterases), alkaline and acid phosphatases and carbohydrate hydrolyzing enzymes (invertase, trehalase and amylase) of the cotton leafwormSpodoptera littoralis (Boisd.) treated as 4th larval instar.
It’s clear from our results that the applied concentration induced decrease in the enzyme activities of both & -esterases at different time intervals post-treatment (6, 12, 24 and 48 hrs.)
Alkaline and acid phosphatases activities were significantly decreased (p <0.01) at all inspected times.
Additionally, LC30 of tested material, caused significant decrease in the carbohydrate hydrolyzing enzymes of the treated larvae as compared to control groups.
Yasser.Abdelrahman@fsc.bu.edu.eg
It’s clear from our results that the applied concentration induced decrease in the enzyme activities of both & -esterases at different time intervals post-treatment (6, 12, 24 and 48 hrs.)
Alkaline and acid phosphatases activities were significantly decreased (p <0.01) at all inspected times.
Additionally, LC30 of tested material, caused significant decrease in the carbohydrate hydrolyzing enzymes of the treated larvae as compared to control groups.
Yasser.Abdelrahman@fsc.bu.edu.eg