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Herbicide resistance might provide advantages to plants in the wild.

ラウンドアップ Credit Xiao Yang
A common technique for the genetic modification of plants that make them herbicide-resistant is found to confer advantages to the weedy varieties of rice even when herbicide is not present. The results indicate that such modifications could have positive effects on wild rice varieties and crop varieties.

A variety of crops have been genetically engineered to resist the glyphosate. The herbicide, originally known as Roundup it was released on the market in the year 1996 under the trade name Roundup. Farmers can eliminate most weeds in their fields using glyphosate, without harming their crops because of this resistance.

Glyphosate blocks the enzyme EPSP synthase which is responsible for the production of specific amino acids and other molecules. It also can hinder the growth of plants. Genetic modification, for instance, the Roundup Ready crops manufactured by Monsanto in St. Louis, Missouri, involves inserting genes to a crop’s genetic code to boost EPSP production. ラウンドアップ 安全性 Genes are typically derived from bacteria that infects the crops.

The plant is able to withstand the effects caused by glyphosate since it has an extra EPSP-synthase. Biotechnology labs also tried to make use of the genes of plants to increase the EPSP synthase enzyme, in part to make use of an American loophole which permits the approval of regulatory authorities of transgenes that are not derived from bacterial pests. There aren’t many studies that have examined the possibility that transgenes, like those that confer resistance glyphosate, can increase the resilience of plants to surviving and reproduce once they cross-pollinate with weedy or wild species. “The conventional belief is that any transgene will confer disadvantage in the wild in the absence of pressure to select, because the extra machinery would lower the fitness,” says Norman Ellstrand, a plant geneticist at the University of California in Riverside.

Lu Baorong of Fudan University in Shanghai is currently challenging this view. The study demonstrates that glyphosate resistance even when applied to an weedy type of rice crop can give a significant health boost.

Their study was published in 1. Lu and his coworkers altered the genetics of cultivated rice to enhance its EPSP synthase expression , and then crossed it with a weedy relative.

The researchers allowed offspring from cross-breeding to breed with one another, resulting in second-generation hybrids genetically identical to each other , with the exception of the number of copies of the gene encodes EPSP synase. The hybrids that had more copies of the gene had a higher chance to make more tryptophan and had more enzyme levels than their unmodified counterparts.;/?ep=Aw-6eGMAAH4ZsqugT6qdad5L7DbBNQnwIfNdM5NgwyX1uEqpjYsRXjEX6W1-qpzWeswSDMRT-F3VZYOxNM8F–OUDKhWbjQE-ob8E931BRBGVYEEH7ChXD2KU1eLArX7ZgPnlJKCzKbaR6abBGe-kCn6ZNlh06eIEzM1z6UebyzBZ1UNQXVn4R7j5ScPdq-IOBzRPSOupORPi5xiwjGVi85gfRzs0TsVC8vZ&v=2 Researchers also found that transgenic hybrids were photogenic, produced more plants per plant and had 48-125 percent higher yields of seeds than the non-transgenic varieties.

Lu believes that making weedy, aggressive rice more competitive could make it more difficult for farmers to recover from the harm caused by this pest.

ラウンドアップ 樹木 ラウンドアップ Brian Ford-Lloyd is Brian Ford-Lloyd is a UK plant geneticist who states, “If the EPSP synthase gene gets in the wild rice species their genetic diversity could be at risk, which is important because the genotype with transgene is superior to the natural species.” “This is one clear example of the very real negative consequences [of GM plants] on our surroundings.”

ラウンドアップ This study also challenges the perception that crops with genetically modified genes containing extra copies of their genes are safer than crops that have microorganism genes. Lu says that Lu’s study does not support this belief.

Researchers say these findings should prompt a rethinking of how genetically modified plants will be controlled in the near future. Ellstrand states “Some people think that the biosafety regulations should be eased.” Ellstrand adds: “But the study proved that new products require careful evaluation.”