Genetically Modified (GM) Coffee
...In order to assess agronomic characteristics, resistance to leaf miners and transfer of [genetically modified] pollen to non-transgenic coffee trees planted around the trail plot, GM Bt robusta plants are currently being planted in French Guiana for field testing over the next five years.
[Bt is shorthand for the Bacillus thuringiensis gene, inserted into the plant to produce toxins that kill or repel insects.]
As the trials are not in Africa, contamination of wild coffee species will not be a problem. But if Bt coffee were grown in Africa in the future there is a danger that cross-pollination could occur, particularly as seeds can be dispersed by birds or bats and cherries are often transported long distances. Smallholders growing coffee in the vicinity of GM coffee could be at risk from contamination and growers might find it more difficult to cash in on the organic or non-GM speciality markets. Non-target effects, for example on bees, will also be studied during the Bt trials but, as with other herbicide-resistant plants, there is considerable concern over the long-term implications of these species being grown with regard to biodiversity and the risk of selection of resistant insects and weeds.
GM technologies, and particularly those for coffee, are still relatively new on the scene. Admittedly, they are developing thick and fast but, ultimately, although cost-effectiveness of technologies will have an impact, the preferences and influence of the consumer is likely to determine when and if the GM storm over coffee breaks.
(emphasis added)
from
New Agriculturist online
http://www.new-agri.co.uk/01-4/focuson/focuson4.html