AD	anaerobic digestion
Ag	silver
AMR	antimicrobial resistance
AMPs	antimicrobial peptides
ARB	antimicrobial-resistant bacteria
ARG	antimicrobial-resistant gene
As	arsenic
CAP	cationic antimicrobial peptide
Cd	cadmium
Co	cobalt
Cr	chromium
Cu	copper
ESBL	extended-spectrum β-lactamase
Hg	mercury
HGT	horizontal gene transfer
MGE	mobile genetic element
Mo	molybdenum
MRSA	methicillin-resistant Staphylococcus aureus
MRG	metal resistant gene
MVC	microbial volatile compound
Ni	nickel
Pb	lead
ROS	reactive oxygen species
Sn	tin
SCV	small-colony variants
TCS	two-component system
V	vanadium
Zn	zinc