Bacterium still a major source of crop pesticide

Excerpt from the April 30, 1966, issue of Science News

Bt peanut plants

SHIELDED  The bacteria Bacillus thuringiensis, Bt, make a natural insecticide that kills pest larvae chowing down on crops. Today, plants are genetically engineered to produce the bacterial toxin. Lesser cornstalk borer larvae can ravage a peanut plant (above, right), but a plant with Bt genes kills hungry pests, protecting the plant (left; dead larva visible to right of plant).

Herb Pilcher/USDA Agricultural Research Service

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