Tag Archives: GM fungus

Who Knew? Weed Killer Roundup Found in GM Foods

A highly influential organization of pediatricians is facing blowback over advice it published earlier this year urging parents to avoid foods with ingredients from genetically modified organisms (GMOs). Guidelines from the American Academy of Pediatrics (AAP) are a go-to source for practicing pediatricians and for some parents. But critics say the advice ignores a wide body of evidence supporting GMOs’ safety. They add that AAP is raising unfounded fears that will drive parents to assume they must buy only organic products, which by definition are not genetically engineered—an option that’s financially out of reach for many families…

The guidelines, published in Pediatrics in January in 2024, were accompanied by a parent newsletter that included “tips for limiting GMOs on your family plate” and referred to “news stories [that] may shrug off the dangers of GMOs.” The Pediatrics paper, whose senior author is Boston College pediatrician and epidemiologist Philip Landrigan, cautioned about potential health harms, especially to infants and children, of residues in food from the weed killer glyphosate, which is widely used on genetically engineered crops.

The AAP guidelines had an impact almost immediately; by March 2024, Mexico was citing them in a trade dispute with the United States, which is challenging Mexico’s ban on imports of genetically modified corn grown in the U.S. But the Pediatrics paper did not mention that regulators in the U.S. and Europe have judged glyphosate at the levels currently found in food to be safe….

The AAP report authors focus on glyphosate, sold commercially by Bayer as Roundup, because its use has exploded in recent decades: Ninety percent of the corn and 96% of the soybeans planted in the U.S. this year were genetically modified, much of it to be resistant to destruction by glyphosate, which instead kills all the weeds around the crops. The herbicide is often sprayed on genetically modified canola and sugar beets as well. As a result, glyphosate residues are in foods made with ingredients such as high fructose corn syrup, sugar, and canola oil, among them children’s favorites from hot dogs and chicken nuggets to sweetened cereal and potato chips.

The AAP report notes a 2015 finding from an arm of the World Health Organization that glyphosate is “probably carcinogenic to humans.” It also cites one meta-analysis that found an elevated risk of non-Hodgkin lymphoma in people with high exposure to glyphosate from years of applying it to crops.

But the U.S. National Academies of Sciences, Engineering, and Medicine found no evidence of adverse health effects in humans from genetically engineered foods or from glyphosate residues in them. The U.S. Food and Drug Administration tests foods for glyphosate residues and has rarely found levels exceeding those determined safe for consumption by the U.S. Environmental Protection Agency (EPA). Numerous other agencies worldwide have similar positions.

Excerpts from Meredith Wadman, Pediatrics academy accused of ‘fearmongering’ over GMO ingredients in kids’ diets, Science, Sept. 17, 2024

How Venom from Spiders Kills Malaria Mosquitoes

In the 1980s, the village of Soumousso in Burkina Faso helped launch one of the most powerful weapons against malaria: insecticide-treated bed nets, which had early field trials there and went on to save millions of lives. But as mosquitoes developed resistance to widely used insecticides, the nets lost some of their power. Now, researchers are hoping the village can help make history again by testing a new countermeasure: a genetically modified (GM) fungus that kills malaria-carrying mosquitoes. In tests in a 600-square-meter structure in Soumousso called the MosquitoSphere—built like greenhouse but with mosquito netting instead of glass—the fungus eliminated 99% of the mosquitoes within a month, scientists report in the  magazine Science.

MosquitoSphere, Burkina Faso

The fungus also has clear advantages, however: It spares insects other than mosquitoes, and because it doesn’t survive long in sunlight, it’s unlikely to spread outside the building interiors where it would be applied.  Fungi naturally infect a variety of insects, consuming the host’s tissues in order to reproduce, and they have been used for decades to control a wide variety of crop pests….Researchers have tested dozens of different fungal strains against disease-carrying mosquitoes, but none was effective enough to pass muster. So researchers from the University of Maryland (UMD) in College Park and the Research Institute of Health Sciences & Centre Muraz in Bobo-Dioulasso, Burkina Faso, endowed a strain called M. pingshaense with a gene for a toxin isolated from spider venom that turns on when it contacts hemolymph, the insect version of blood. In the lab, the team showed its creation could kill mosquitoes faster and that just one or two spores could cause a lethal infection. 

Burkina Faso was a promising place for a field test: Unlike many countries in Africa, it has an established system to evaluate and approve the use of GM organisms. It also has one of the highest rates of malaria in the world, and insecticide-resistant mosquitoes are widespread. For those and other reasons, the U.S. National Institutes of Health funded the MosquitoSphere, which is specifically designed to test GM organisms.

Excerpts fromGretchen Vogel  Fungus with a venom gene could be new mosquito killer, Science, May 31, 2019