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Wild plants could be able to resist herbicides.

Credit goes to Xiao Yang
The use of genetic modification to make crops resistant to herbicides has been widely utilized to provide advantages to species of rice that are weedy. ラウンドアップ This suggests that the genetic modification may also have potential to impact wild animals.

A variety of varieties of crops have been genetically engineered to resist glyphosate. This herbicide, first called Roundup it was released on the market in the year 1996 under the tradename Roundup. This resistance to glyphosate allows farmers to eliminate the majority of plants without causing damage to their crops.

Glyphosate slows the growth of plants by blocking an enzyme known as EPSP synthase. It is responsible for the production of specific amino acids as well as other molecules that account for as much as 35% of a plant’s mass. The genetic modification method employed for Roundup Ready crops by Monsanto (based in St Louis in Missouri) is the process of inserting genes into a crop to increase EPSP-synthase output. Genes are typically derived from bacteria that infect the crops.

This additional EPSP synthase allows plants to resist the effects from glyphosate. Biotechnology laboratories are attempting to use genes that come from plants instead of bacteria to increase EPSP synthase. ラウンドアップ 原液 筆 This is due to the fact that the US law permits regulatory approval that allows organisms with transgenes to be accepted.

Few studies have looked into whether transgenes, such as ones that confer resistance to glyphosate, could increase the resilience of plants to surviving and reproduce once they cross-pollinate with wild or weedy species. Norman Ellstrand of the University of California, Riverside, said that the traditional expectation was that any transgene would confer disadvantage in nature if there is no selection pressure. This is due to the fact that any additional machinery could reduce the effectiveness of.

Lu Baorong of Fudan University in Shanghai is in the process of challenging this notion. ラウンドアップ The study demonstrates that resistance to glyphosate even when not applied to a weedy varieties of the rice crop can give a significant health boost.

Lu and colleagues altered cultivated rice species to enhance the production of EPSP synthase. The modified rice was then cross-bred with a wild ancestor.

The group then let offspring that were cross-bred to breed with one another, resulting in second generation hybrids which are genetically similar to their parents, except for how many copies of the gene that encodes EPSP synthase. ラウンドアップ As one would expect, the more copies produced higher levels of enzyme, and also more tryptophan, than the unmodified counterparts.

Researchers also discovered that transgenic hybrids are more photogenic, had more seeds per plant, and produced 48 to 125% higher yields of seeds than non-transgenic varieties.

Lu believes that making the weedy rice more competitive may make the problem worse for the farmers around the world who’s fields are being ravaged by the pest.

“If the EPSP-synthase gene is introduced into the wild rice plant, their genetic diversity, which is really essential to protect may be at risk as the genotype with the transgene will outcompete the natural species” says Brian Ford-Lloyd who is a plant geneticist at the University of Birmingham, UK. ラウンドアップ “This is among the most clear examples of extremely plausible damaging consequences of GM crops] on the environment.”

The general public believes that plants with genetically modified genes containing more copies of their own genes than microorganisms are safe. ラウンドアップ This notion is not supported by this study. Lu says that the study “shows that this isn’t always true”.

According to some scientists this finding suggests that any future regulation for genetically engineered plants should be rethought. Ellstrand says that “some people are now of the opinion that biosafety regulation could be relaxed due to our the most comfort with genetic engineering over the last two decades.” The study found that any new products must be carefully evaluated.