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Bacillus thuringiensis (Bt) in Brief This fact sheet describes Bt used as a pesticide in sprays, granules, and other products. Bt crops are different. They're called 'genetically engineered' or 'transgenic' crops because they use DNA from Bt bacteria. The plants make Bt proteins (toxins) that only target specific insects. 1 The Bt toxin made by the plant is called a 'plant-incorporated ...
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Feb 25, 2015 · Back to Pathogens Table of Contents Bacillus thuringiensis, bio-pesticide By Zachary P. Cohen, Cornell University Last updated Feb 25, 2015 History Bacillus thuringiensis (Bt) is a bacterium that was first identified by S. Ishiwata in 1901 in Japanese silkworms presenting flacherie, or flaccid disease. It was later scientifically described and named by E. …
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Gram stain of Bacillus thuringiensis under 1000 × magnification Bacillus thuringiensis (or Bt) is a gram-positive, soil-dwelling bacterium, the most commonly used biological pesticide worldwide. B. thuringiensis also occurs naturally in the gut of caterpillars of various types of moths and butterflies, as well as on leaf surfaces, aquatic environments, animal feces, insect-rich …
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