Grasses Transfer Genes from their Neighbors in Same Way GM Crops Are MadeOctober 11, 2023
A new study reveals that grasses may transfer genes from their neighbors in the same way that genetically modified (GM) crops are made. This research is the first to show how frequently grasses exchange genes in the wild through the process called lateral gene transfer, also known as horizontal gene transfer.
The evolutionary shortcut allows grasses to grow faster, bigger, taller, and stronger, and adapt to new environments quicker. Grasses cover 30 percent of the earth's terrestrial surface and produce a majority of the world's food. The research team sequenced multiple genomes of the tropical grass Alloteropsis semialata. Their study retraced the evolutionary history of the genes in the genome and identified those with foreign origins. They found that this grass acquired genes continually throughout its evolutionary history, with a foreign gene incorporated approximately every 35,000 years.
Horizontal gene transfer and GM crops have the same outcome, with a foreign gene inserted into a recipient's genome. It is now thought these transfers are likely to occur in the same way that some GM crops are made.
Dr. Luke Dunning, the University of Sheffield research fellow and senior author of the research, said: “There are many methods to make GM crops, some which require substantial human intervention and some that don't. Some of these methods that require minimal human intervention could occur naturally and facilitate the transfers we have observed in wild grasses." He also said that their current working hypothesis which they plan to test in the near future, is that these same methods are responsible for the gene transfers that they document in wild grasses. “This means, in the near future, controversial genetic modification could be perceived as more of a natural process," he added.
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