Lu claims that making the weedy grain more competitive could cause more problems for farmers across the world who have crops infected by the insect.īrian Ford-Lloyd, a UK plant geneticist. Researchers also found that transgenics have higher rates, had more flowers and 48-125percent more seeds/plant than nontransgenics. As one would expect, the more copies resulted in higher levels of enzyme as well as more tryptophan than their unmodified counterparts. ラウンドアップ The researchers then allowed offspring to crossbreed with one-another, creating second-generation hybrids that were genetically identical to their parents, except for how many copies of the gene that encodes EPSP synthase. ラウンドアップ The modified rice was then crossed with a wild relative. Lu and colleagues modified cultivars of rice to improve its EPSP synthase. "The common belief is that any sort of transgene could cause disadvantage in the wild, in the absence of pressure to select, because the additional machinery could reduce the fitness," says Norman Ellstrand an expert in plant genetics at the University of California in Riverside.īut now a study led by Lu Baorong, an ecologist from Fudan University in Shanghai, is challenging that notion and shows that the weedy variant of the standard rice crop, Oryza sativa has an important boost in fitness due to resistance to glyphosate, even when glyphosate is not used. There aren't many studies that have examined whether transgenes such as those that confer glyphosate resistance can - once they get into weedy or wild relatives through cross-pollination, make plants more competitive for survival and reproduction. This is due to the fact that the US law allows regulatory approval to allow organisms that have transgenes to be approved. Biotechnology labs are also looking to make use of genes from plants instead of bacteria to increase EPSP synthase. The additional EPSP synase makes it possible for plants to counter the effects of glyphosate. The genes are typically derived from bacteria infected with plants. Louis, Missouri, involves inserting genes into a plant's genetic code to boost EPSP production. Genetic modification, such as the Roundup Ready crops manufactured by Monsanto in St. It can also inhibit the growth of plants. Glyphosate inhibits an enzyme known as EPSP synthase that is responsible for the production of specific amino acids and various other molecules. This resistance to glyphosate allows farmers to eradicate most weeds without causing any damage to their crop. Several types of crops are modified genetically to resist glyphosate, an herbicide first marketed under the brand name Roundup. The finding suggests that the benefits of such modifications could extend beyond the confines of farms out into the wild. The use of genetic modification to make crops resistant to herbicides has been widely used to produce advantages for weedy rice varieties. In the wild, plants can be treated with herbicides. Genetically modified crops offer greater benefits than herbicides
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |