martes, febrero 20, 2007
Más sobre árboles transgénicos
There is growing pressure to commercialise the numerous GM tree species that have been modified with a variety of transgenes. One major reason is that GM trees have been proposed for plantations on the mistaken assumption that they can offset carbon emissions, and more so, qualify for subsidies under the Kyoto Protocol's Clean Development Mechanism . At the same time, rising worldwide demand for biofuels has opened up an opportunity for proponents to rescue genetically modified (GM) crops from chronic market failure by promoting them as ‘energy' crops (see Box 1). Unfortunately, energy crops, including GM tree plantations, are far from sustainable or environmentally benign [1-3] ( Biofuels for Oil Addicts , SiS 30; Biofuels: Biodevastation, Hunger & False Carbon Credits , Biofuels Republic Brazil , SiS 33). But in the rush to exploit GM trees, caution will be scattered to the winds, like the pollen of the GM trees currently being tested.