Notes

Genetically modified crops offer more benefits than herbicides

Wild plants could be given herbicide resistance.

Credit Xiao Yang
The most common method for the genetic modification of plants that make them herbicide-resistant has been proven to provide advantages to weedy varieties of rice even when the herbicide is not present. These findings suggest that such modifications may have a wide variety of impacts that extend beyond farms, and possibly in the wild.

Many crops have been genetically altered so that they can ward off glyphosate. The herbicide was initially available under the trade name Roundup. Farmers are able to eliminate weeds from their fields with this glyphosate resistance , without damaging their crops.

ラウンドアップ Glyphosate blocks an enzyme called EPSP synthase that is responsible for the production of specific amino acids as well as other molecules. It can also hinder the growth of plants. The technique of genetic modification utilized, for instance in Roundup Ready crops made by the biotech giant Monsanto located in St Louis, Missouri -generally involves inserting genes into a crop's genome to increase EPSP-synthase's production. The genes typically come from bacteria that cause disease in the plants.

This additional EPSP synthase permits the plant to withstand the effects of glyphosate. Biotechnology labs have also attempted to make use of the genes of plants to increase EPSP-synthase, partly to take advantage of a loophole in the American system which permits the approval of regulatory authorities of transgenes not derived bacteria-based pests.

There aren't many studies that have examined whether transgenes that confer glyphosate tolerance may -- once they are weedy or become wild relatives through cross-pollinatingcan boost the plant's survival and reproduce. Norman Ellstrand of the University of California, Riverside, explained that the standard assumption was that any transgene will confer disadvantage in nature if there is no selection pressure. This is due to the fact that any additional machines would reduce the performance of the.

Lu Baorong of Fudan University in Shanghai is currently challenging this view. The study demonstrates that glyphosate resistance , even when applied to a weedy varieties of the rice crop could provide a substantial health benefit.

ラウンドアップ 原液 Lu and colleagues altered cultivated rice species to enhance the production of EPSP synthase. The modified rice was crossed with a wild-type relative.

The group then permitted cross-breeding offspring to be bred with one another to create second-generation hybrids. ラウンドアップ 樹木 They were genetically identical, with the exception of the number and copy count of the EPSP synthase gene. ラウンドアップ https://search.rakuten.co.jp/search/mall/ラウンドアップ+マックスロード/ As expected, those with more copies expressed greater levels of the enzyme, and produced more amino acids tryptophan than their unmodified counterparts.

Researchers also discovered that transgenic hybrids were more photogenic, had more seeds per plant and had 48-125 percent higher yields of seeds than the non-transgenic varieties.

Lu believes that making weedy rice less competitive can make it more difficult for farmers who have their land affected by the pest.

https://tcss.vivahome.com/product/commodity/0000/08030102-006328/ Brian Ford-Lloyd of the University of Birmingham, UK Brian Ford-Lloyd, a researcher at the University of Birmingham in the "If the EPSP synthase gene is introduced to wild rice varieties the genetic diversity of their species, which was really important in conserving it, could be at risk because it could beat out the conventional varieties." ラウンドアップ This is one of the most evident examples of likely negative effects of GM crop on the environment."

The public has a perception that genetically engineered crops that have extra copies or microorganisms genes are more secure than those that only contain the genes of their owners. Lu declares, "Our study shows this is not the case."

The findings call for a rethinking of future regulation of genetically modified crops, some researchers say. Ellstrand says that some people believe that biosafety regulations could be relaxed given the past two years of genetic engineering. The study does not prove that the new products are secure.


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