Since 1996, farmers worldwide have planted more than a billion acres (400 million hectares) of genetically modified corn and cotton that produce insecticidal proteins from the bacterium Bacillus thuringiensis, or Bt for short. ...
Biotechnology
Jun 10, 2013
0
0
In the first chapter of The Origin of Species, Charles Darwin detailed his examinations of the skeletons of a variety of different breeds of domestic pigeons. To agreement today, he concluded that they all descended, by selective ...
(Phys.org) —The popular new strategy of planting genetically engineered crops that make two or more toxins to fend off insect pests rests on assumptions that don't always apply, UA researchers have discovered. Their study ...
Ecology
Mar 29, 2013
20
0
Genetically modified Bt cotton plants contain a poison that protects them from their most significant enemies. As a result, these plants rely less on their own defence system. This benefits other pests, such as aphids. These ...
Ecology
Mar 13, 2013
0
0
(Phys.org) -- Pests are adapting to genetically modified crops in unexpected ways, researchers have discovered. The findings underscore the importance of closely monitoring and countering pest resistance to biotech crops.
Ecology
Jun 20, 2012
1
0
(Phys.org) -- Because they can modify plants to either produce better fruit or in many other cases ward off disease and pests, researchers genetically alter crop plants to increase yields without adding additional costs to ...
Genetically modified crops that produce insect-killing proteins from the bacterium Bacillus thuringiensis (Bt) have reduced reliance on insecticide sprays since 1996. These proteins are lethal to some devastating crop pests, ...
Ecology
Jun 3, 2012
4
0
(Phys.org) -- The discovery that more Western corn rootworms are resistant to the toxin contained in widely planted transgenic corn has sparked a warning that farmers must change tactics or lose a valuable management tool ...
Ecology
Apr 23, 2012
0
0
Policies regarding genetically modified organisms (GMOs) need to take biodiversity and regional attributes into account, according to Sandra Mitchell, professor and chair in the Department of History and Philosophy of Science ...
Ecology
Feb 19, 2012
0
0
Toxins from Bacillus thuringiensis bacteria (Bt toxins) are used in organic and conventional farming to manage pest insects. Sprayed as pesticides or produced in genetically modified plants, Bt toxins, used in pest control ...
Biotechnology
Oct 19, 2011
0
0
