Microbiota Landscape of Gut System of Guppy Fish (Poecilia reticulata) Plays an Outstanding Role in Adaptation Mechanisms

Figure 6

PCA of cytochrome oxidase enzymatic activity. Hg: mercury, Co: cobalt, Pb: plomb, and Zn: zinc. 1+: weak activity; 2+: moderate activity; 2+: excellent growth; 3−: no activity. Oxaa1 (3+): cytochrome oxidase activities in the absence of trace metal with excellent activity. Oxaa2 (3−): Cytochrome oxidase activities in the absence of trace metal with no activity. Oxaaf1 (3+): cytochrome oxidase activities after trace metal incubation with excellent activity. Oxaaf2 (1+): cytochrome oxidase activities after trace metal incubation with weak activity. Oxaaf3 (2+): cytochrome oxidase activities after trace metal incubation with moderate activity. Oxaaaf4 (3−): cytochrome oxidase activities after trace metal incubation with no activity used as negative control. Bs: Bacillus subtilis strain 48, Ba: B. amyloliquefaciens strain 55, Bl: B. licheniformis strain 62, Bc: B. cereus strain 35, C: consortium including S35, S48 S62, and S63, Ec. E. coli lab strain used as negative control, and Pa: Pseudomonas aeruginosa lab strain used as positive control.