If you want to get some non-mainstream or non-paid for opinions on this topic, the consequences for farmers in the U.S. and even more in developing countries, a

If you want to get some non-mainstream or non-paid for opinions on this topic, the consequences for farmers in the U.S. and even more in developing countries, also on how the PTO started to allow such patents in the first place watch Food Inc - http://en.wikipedia.org/wiki/Food,_Inc http://en.wikipedia.org/wiki/Food,_Inc.