Relative abundance of COG functional categories for ZC1 and ZC2 and seven public metagenomes.

<p>Assembled sequence reads were classified into the 25 COG categories designated in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0061928#pone-0061928-g005" target="_blank">Figure 5</a> and their relative abundances for each metagenome were estimated considering the respective total number of protein coding sequences with function prediction. The public metagenomes included in the comparison are benzene-degrading bioreactor, biofuel reactor, compost minireactor, termite hindgut, poplar biomass bioreactor, lake sediment and soil rain forest, whose features are listed in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0061928#pone.0061928.s008" target="_blank">Table S5</a>. Asterisks indicate statistically significant values.