[Bt toxin distribution in transgenic Bt cotton and soil system].
This study showed that the amounts of Bt toxin expressed in transgenic Bt cotton leaves and stems (103.5 - 134.1 ng x g(-1)) were rather higher than those expressed in transgenic Bt cotton roots (44.7 - 21.2 ng x g(-1)), indicating that total amount of soil Bt toxin introduced by transgenic Bt cotton could be decreased through treating its above-ground biomass. In comparing with the amount of Bt toxin expressed in transgenic Bt cotton plant, that expressed in its root exudates was rather lower, showing that the effects of plant Bt toxin on soil ecosystem would be limited if other sources of Bt toxin introduced into soil were controlled.
Sun
Caixia
C
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. suncaixia@hotmail.com
Chen
Lijun
L
Wu
Zhijie
Z
D001426:Bacterial Proteins / Q000032:analysis / Q000235:genetics; D001427:Bacterial Toxins / Q000032:analysis* / Q000235:genetics; D003368:Gossypium / Q000737:chemistry* / Q000235:genetics; D010572:Pest Control, Biological; D030821:Plants, Genetically Modified; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000032:analysis
D001426:Bacterial Proteins; D001427:Bacterial Toxins; D012987:Soil; D012989:Soil Pollutants