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Monsanto developed a glyphosate-resistant soybean that also expresses Cry1Ac protein from Bacillus thuringiensis and the glyphosate-resistance gene, which completed the Brazilian regulatory process in 2010. This is a cross of two events, MON87701 x MON89788.
In 1982, Comai presented his glyphosate tolerance mutation to a fellow scientist, Steve Rogers, who worked at Monsanto and demonstrated that he had made a superior form of the resistance gene than the one Monsanto had been working on. Though it was still not good enough for agricultural production and Comai continued his independent work.
The gene that provides resistance to the herbicide glyphosate was found after seven years of searching in bacteria living in the outflow pipe of a Monsanto RoundUp manufacturing facility. [16] In animals, the majority of genes used are growth hormone genes. [17]
Over-reliance on glyphosate and a reduction in the diversity of weed management practices allowed the spread of glyphosate resistance in 14 weed species in the US, [207] and in soybeans. [ 5 ] To reduce resistance to Bacillus thuringiensis (Bt) crops, the 1996 commercialization of transgenic cotton and maize came with a management strategy to ...
The version used in genetically modified crops was isolated from Agrobacterium strain CP4 (CP4 EPSPS) that was resistant to glyphosate. [15] [16] The CP4 EPSPS gene was cloned and inserted into soybeans. The CP4 EPSPS gene was engineered for plant expression by fusing the 5' end of the gene to a chloroplast transit peptide derived from the ...
Approval has been granted to grow crops engineered to be resistant to the herbicides 2,4-dichlorophenoxyacetic acid, [8] dicamba, [9] glufosinate [10] glyphosate, [11] sulfonylurea, [12] oxynil [13] mesotrione [14] and isoxaflutole [15] Most herbicide resistant GM crops have been engineered for glyphosate tolerance, in the USA 93% of soybeans ...
In genetic engineering, a gene gun or biolistic particle delivery system is a device used to deliver exogenous DNA , RNA, or protein to cells. By coating particles of a heavy metal with a gene of interest and firing these micro-projectiles into cells using mechanical force, an integration of desired genetic information can be introduced into ...
Commercial varieties of important agricultural crops (including soy, maize/corn, sorghum, canola, alfalfa and cotton) have been developed that incorporate a recombinant gene that results in resistance to the herbicide glyphosate (trade name Roundup), and simplifies weed control by glyphosate application. [30]