BILL BARKSDALE / AGSTOCKUSA / SCIENCE PHOTO LIBRARY BILL BARKSDALE / AGSTOCKUSA / SCIENCE PHOTO LIBRARY
Genetically modified cotton. Young genetically modified (GM) cotton (Gossypium hirsutum) plants being sprayed with herbicide. This transgenic cotton (variety BXN) has been genetically engineered to be resistant to a herbicide called bromoxynil. The cotton contains a gene from the bacterium Klebsiella pneumoniae, which produces an enzyme that hydrolyses bromoxynil and related chemicals into non-toxic compounds. Fields of BXN cotton can therefore be sprayed with herbicide to kill weeds without causing any damage to the crop. This will theoretically increase crop yields. Photographed in Arkansas, USA.
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