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Bacillus thuringiensis Overview

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Questions and Answers

What is Bacillus thuringiensis (Bt) and where is it naturally found?

Bacillus thuringiensis (Bt) is a bacterium found naturally in soil.

How does the toxin from Bt affect insect larvae?

The Bt toxin damages the insect larvae's gut after ingestion, leading to infection and starvation.

What types of products commonly contain Bt?

Bt is found in sprays, dusts, granules, concentrates, and pellets.

Why is Bt considered a biopesticide?

<p>Bt is considered a biopesticide because it is derived from a natural source.</p> Signup and view all the answers

What safety considerations should people keep in mind when using Bt products?

<p>Always follow label instructions and minimize exposure to Bt products.</p> Signup and view all the answers

Flashcards

Bt bacterium

A naturally occurring soil bacterium that produces proteins toxic to insect larvae.

Bt toxins

Proteins produced by Bacillus thuringiensis that are lethal to insect larvae.

Biopesticide

A pesticide derived from a natural source, like Bt, often considered less risky than human-made pesticides.

Bt crops

Genetically modified crops containing genes from Bacillus thuringiensis to produce toxins harmful to specific insects.

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Insect gut activation

Bt toxins are activated in the insect gut, which must reach a specific pH range for activation.