FIG 2.

Quorum-quenching determinants identified by whole-metagenome shotgun sequencing of metagenomic libraries. (A) Quorum-quenching genes identified, normalized as copies per million paired-end reads per sample source. The 10 most frequently identified genes are shown, and the remaining genes are grouped together and labeled “other.” (B) Species-level classification of QQ determinants normalized as copies per million paired-end reads per sample source. Sequences which could not be classified by Kraken2 are labeled unclassified while sequences which could not be classified to a species are labeled unassigned.