The widespread use of glyphosate has permeated not only small- and large-scale agriculture, but also the fight against drug trafficking and illicit crops. Health, alimentary security, and the rights of peasant and indigenous communities have been compromised in countries with intensive use of glyphosate-based herbicides. In 2015, the International Agency for Research on Cancer classified this substance as probably carcinogenic to humans, leading to the suspension of aerial glyphosate spraying the same year in countries like Colombia, where glyphosate has been extensively used in illicit crop eradication. Notwithstanding, according to a study of the U.S. Geological Survey, traces of glyphosate and its main degradation product, AMPA, remain in soil year after year. This underscores the urgency and importance of assessing new technologies to degrade glyphosate present in soils and waterbodies without leaving persistent byproducts. The aim of this study was to evaluate Lysinibacillus sphaericus’ glyphosate uptake as a carbon and phosphorous source by a sarcosine-mediated metabolic pathway that releases glycine as final degradation product. To accomplish this, molecular and analytic evidence were collected in vitro from sarcosine oxidase activity, a key enzyme of a degradation pathway which releases byproducts that are easy to incorporate into natural biosynthesis routes.
Environmental Science and Pollution Research – Springer Journals
Published: May 31, 2018
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