Fig. 4From: Polycyclic aromatic hydrocarbon (PAH) biodegradation capacity revealed by a genome-function relationship approachThe phylogenetic distribution of PAH-degrading genes. nah genes (nahAc, nahB, nahC, nahD, and nahE) are shown in pink circle plots. nar genes (narAa, narAb, narB, and narC) are shown in blue triangle plots. nid and phd genes (nidA, nidB, nidD, phdE, phdF, phdG, phdI, and phdJ) are shown in green square plots. The top four families with the most PAH-catabolic genes, Pseudomonadaceae, Sphingomonadaceae, Mycobacteriaceae, and Nocardiaceae, are highlighted in blue colorBack to article page