Similar term(s): Bacillus thuringiensis, Bt gene , Bt crops.


A naturally occuring bacteria that produces a protein toxic to certain types of insects.

The gene inside the bacteria that is responsible for producing that toxin - the Bt gene - can be transferred to crops, thereby making them more resistant to the corresponding insect.

Source: GreenFacts, based on University of Minnesota Glossary of Biotechnology Terms  


The Bt-toxin is poisonous to many moth and butterfly larvae, and some beetle and fly larvae, but not to humans. It has been available as a commercial insecticide since the 1960s.

Source: GreenFacts

Related words:

Bacteria - Genetic Engineering

To read about this term in context:

GreenFacts Summary on Genetically Modified Crops:


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