A colleague recently asked me this trivial question of why we only prefer E. coli, P. aeruginosa, A. niger, F. oxysporum for antimicrobial susceptibility testing. My answer was that they're the generalist representative species we know much about. Still, it made me wonder if years of antimicrobial testing would've made these strains less susceptible to various antimicrobial compounds, synthetic and natural. Please do enlighten.
Best to use a ATTC strain, so your results are consistent. See my work at https://www.ecoseeds.com/mrsa.html where I was using the already drug resistant ATTC strains.
ATCC = www.atcc.org -- American Type Culture Collection is a nonprofit organization which collects, stores, and distributes standard reference microorganisms, cell lines and other materials for research and development. Wikipedia = https://en.wikipedia.org/wiki/ATCC_(company)
@Rohan krishnan yes we generally prefer the above mentioned species because that generally found infections are because of them. Aim of antimicrobial coating /surface or drug is to protect against the micro-organisms it is formulated for. General testings are based on generally found bacteria so that antimicrobial drug, coating/surface should atleast work against them.
Yes it is possible that microbes will develop antimicrobial resistance (AMR) because of long exposure & therefore need to develop new antimicrobial agents.
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