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Journal of Microbial & Biochemical Technology
Identification of the response pathways of Escherichia coli and Enterococcus faecalis to glyphosate and its major breakdown compound aminomethyl phosphonic acid (AMPA)
5th International Conference on Microbial Physiology and Genomics
September 29-30, 2016 London, UK

Kabelo Stenger

Genok Center for Biosafety, Norway

Posters & Accepted Abstracts: J Microb Biochem Technol

Abstract:

Glyphosate is the active ingredient in most herbicides and has increasingly been reported as toxic. Its major breakdown product, AMPA, albeit to a lesser extent has also been reported to be toxic to rodents and some aquatic lives. Residues of glyphosate and AMPA have been shown in some foods and feeds derived from genetically modified herbicide resistant crops. Thus, bacteria will encounter varying concentrations of glyphosate and AMPA in their respective niches in their respective environments, e.g., the gut. In bacteria, glyphosate at inhibitory concentrations interferes with 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) of the Shikimate pathway. However, information is lacking on the response of bacteria to sub-lethal concentrations of glyphosate and AMPA. With the growing body of literature on the toxicity of glyphosate at ultra-low dose, it was of interest to investigate the response of bacteria to sub-lethal concentrations of glyphosate and AMPA. Proteomic and transcriptomic approaches are being used to analyze two strains of representative bacteria commonly found in the gut, E. coli and E. faecalis, exposed to sub-lethal concentration of glyphosate and AMPA. The aim is to identify the response pathways of the bacteria when challenged with low doses of glyphosate and AMPA. Data derived from this study provides information relevant to the evaluation of the safety of GM modified herbicide resistant crops.

Biography :

Kabelo Stenger is currently pursuing his Master’s degree in Environmental Sciences from the North West University in South Africa. He has completed his Bachelor’s degree and honors degree in Environmental Sciences.

Email: kabelostenger@gmail.com