Scientific basis to farmer reports of increased gastrointestinal disease in animals fed GM Roundup Ready Soy.

rooster-3218_640A new study recently published by Scientist at Leipzig University found that the Roundup herbicide,  based on the chemical glyphosate, negatively impacted the of in . The researchers found that highly pathogenic bacteria resisted Roundup, whereas were moderately to highly susceptible to it.

The aim of the study was to determine the real impact of glyphosate on potential and beneficial members of microbiota in . The presented results evidence that the highly pathogenic bacteria as Salmonella Entritidis, Salmonella Gallinarum, Salmonella Typhimurium, Clostridium perfringens and are highly resistant to glyphosate. However, most of as Enterococcus faecalis, Enterococcus faecium, Bacillus badius, adolescentis and Lactobacillus spp. were found to be moderate to highly susceptible. Also Campylobacter spp. were found to be susceptible to glyphosate. A reduction of in the microbiota by of glyphosate could disturb the normal gut bacterial community. Also, the toxicity of glyphosate to the most prevalent Enterococcus spp. could be a significant predisposing factor that is associated with the increase in C. botulinum-mediated diseases by suppressing the antagonistic effect of these bacteria on clostridia.


Shehata, A. A., W. Schrodl, et al. (2012). The effect of glyphosate on potential and beneficial members of microbiota in . Curr Microbiol. online 9 December.

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