ASM Microbe 2019: Day 3 Update

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  1. Mechanisms of spinach fungal endophyte suppression of enterohemorrhagic Escherichia coli from Lindsay Gielda (Purdue University Northwest, IN, USA). With spinach and lettuce plants being major sources of E. coli O157:H7 outbreaks, and the bacterium recently being shown to adopt an endophytic lifestyle within the tissue of these plants, the researcher hoped to identify endophytes that hold the potential to suppress growth of E. coli O157:H7 in plantae. Four fungal isolates (PNW-2016-01 through PNW-2016-04)  were identified based on DNA sequencing and demonstrated particularly strong bacterial growth suppressive properties.
  2. First report of the mcr-1 colistin resistance gene in 2 Escherichia coli from clinical samples in the Philippines from John Mark Velasco (USAMD-AFIRMS) describes the drug susceptibility profiles of 2 non-clonal mcr-1 positive Escherichia coli clinical strains from separate patients in Manila, Philippines, which is the first report of mcr-1-postive E. coli from the country. The researchers argue that strengthening of multidrug-resistant microbial pathogen surveillance to include animal and agricultural sectors is needed to better characterize the sources and local prevalence of colistin resistance.

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