benish ppt
TRANSCRIPT
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Bacillus thuringiensis (Bt)
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LIST OF CONTENTS• Introduction• Discovery• Crystalline Inclusion Bodies• Action of microbial insecticide• Conclusion
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INTRODUCTION
• B. thuringiensis is a Gram-positive soil bacterium
• Modes of Nutrition Saprophytic Parasitic
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PHOTOGRAPH OF Bt
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DISCOVERY
• In Japan in 1901 by Shigetane Ishiwata
flacherie,a disease of silkworm caused by Bt
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CONTINUED…
• Since 1920s Spores and crystalline insecticidal protein for pest control
• 1996 transgenic crop plants
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CRYSTALLINE INCLUSION BODIESNUTRIENT STORAGE MAINLY PROTEINS
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ACTION OF A B. thuringiensis INSECTICIDE
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TRANSGENIC CORN PLANT
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LIST OF FAMOUS CROPS AND PESTS
CROPS PESTS
• Corn Black cutworm Corn earworm Common stalk borer • Cotton European corn borer
• Potato Pink bollworm
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CONCLUSION• Elimination of undesired pests• Eco-friendly• Cheap
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