Fig. 3From: Identification of diverse antibiotic resistant bacteria in agricultural soil with H218O stable isotope probing combined with high-throughput sequencingPrincipal coordinate analysis (PCoA) plots of bacterial OTUs (97% sequence similarity) derived from 16S rRNA genes extracted from soil. The ellipse indicates the difference between microbial communities in the presence or absence of antibiotics in the PCoA space (PERMANOVA: p = 0.001, R2 = 0.26). The legend indicates the origin of the samples. 16 H: incubation with H216O; 18 H: incubation with H218O; AB: incubation with antibiotics; CT: incubation without antibiotics; Heavy: “heavy” fractions of the extracted soil DNA; Light: “light” fractions of the extracted soil DNA.Back to article page