[Technology Review]
GM crops that shut down pests' genes: researchers at the Chinese Academy of Sciences, in Shanghai, have made cotton plants that silence a gene that allows cotton bollworms to process the toxin gossypol, which occurs naturally in cotton. Bollworms that eat the genetically engineered cotton can't make their toxin-processing proteins, and they die. Researchers at Monsanto and Devgen, a Belgian company, have made corn plants that silence a gene essential for energy production in corn rootworms; ingestion wipes out the worms within 12 days.
6 Nov 2007 7:59 am MST