Roundup Ready Soybean

Jankiewicz A, Broil H, Zagon J (1999) The official method for the detection of genetically modified soybeans (German Food Act LMBG 35) A semi-quantitative study of sensitivity limits with gjyphosate-tolerant soybeans (Roundup Ready) and insect-resistant Bt maize Maximized. Eur. Food Res. Technol., Vol. 209, 77-82. 

Padgette, S. R., Re, D. B., Barry, G. F. el al. (1994). New weed control opportunities development of soybeans with a Roundup Ready gene. In Herbicide-resistant Crops Agricultural, Economics, Environmental, Regulatory, and Technologycal Aspects, ed. S. O. Duke. Boca Raton, FL CRC Press. 

The advantage for the farmer is that he needs only one product, instead of several different selective (and more expensive) herbicides. Roundup ready soybeans were launched in 1996 and today 50 percent of the soybean crop in the United States is derived from roundup ready seeds. Other glyphosate-resistant transgenic crops introduced by Monsanto are maize and oil seed rape. Competing companies also developed herbicide-resistant plants or plants genetically modified to be protected against certain pests, but none has achieved a commercial breakthrough, mainly because of political reasons. 

Cromwell, G.L. M.D. Lindemann J.H. Randolph G.R. Parker R.D. Coffey K.M. Laurent C.L. Armstrong W.B. Mikel E.P. Stanisiewski G.R Hartnell. Soybean meal from roundup ready or conventional soybeans in diets for growing-finishing swine./. Anim. Sci. 2002, 80, 708—715. 

Best known as genes conveying new properties are the EPSPS gene from the plant Petunia hybrida, which codes for tolerance to the herbicide Roundup Ready [this is found in the Roundup Ready soybean (RRS)], and the cry genes from Bacillus... 

The transgenic soybean that contains the P35S and T-NOS elements is the Roundup Ready soybean. The next step should be to event-specifically test for Roundup Ready soybean. 

There are two commercially available herbicide resistant traits in soybean, glypho-sate resistance (Roundup Ready , RR) and sulfonylurea resistance (STS ). Herbicide resistance now accounts for over 90% of approximately 73 million total soybean acres grown in the United States (Fig. 6.1.2) [6]. 

A major milestone occurred in 1996 with the commercial introduction of glyphosate resistant soybean [22]. Since then, the glyphosate resistant trait (Roundup Ready , RR) has been introduced into canola, cotton, com, alfalfa, sugar beet, and others. All RR crops thus far contain a glyphosate insensitive EPS PS derived either from the plant or bacteria. 

The class II EPSP synthase gene also called roundup ready gene induces tolerance to glyphosate. When introduced into soybeans, cotton, maize, canola, and the hke, these plants tolerate glyphosate. That means that gls hosate can be used to control weeds in these crop plants without damaging them, although it is originally a total herbicide that kills all plants. 

---