2012年4月18日星期三

The Research Story: Dicamba Resistant Soybean Technology


The trait used to develop dicamba-resistant soybean was discovered at the University of Nebraska-Lincoln by a team of researchers led by Dr. Donald Weeks, and was licensed to Monsanto. The trait confers the ability to rapidly metabolize dicamba and was found in the soil bacterium Pseudomonas maltophilia (Behrens et al., 2007). Then through the process of genetic engineering, the trait was inserted into soybean, enabling soybean to breakdown dicamba to an inactive form that is not harmful to the crop.
Dicamba is a selective herbicide that controls broadleaf weeds, but not grasses. It is most often applied in combination with other herbicides, particularly if there is a need for both broadleaf and grass control.  It is widely used in cereal grain crops, in pastures, and in turf environments like lawns and golf courses. Dicamba is primarily
applied to control weeds that have already emerged the soil, and may limit the growth of some weeds that germinate later.  The two most common formulations of dicamba are Banvel and Clarity, but there are numerous other products that contain dicamba as an active ingredient, such as Status, Distinct, Weed-B-Gon and Trimec


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