Fig. 2.

Abundance distribution of predominant phyla and genera in S1 (control on day 1), S2 (control after 22 days), S3 (crude oil-contaminated soil on day 22), S4 (diesel-contaminated soil on day 22), and S5 (gasoline-contaminated soil on day 22) determined by Illumina sequencing of 16S rRNA and ITS genes in the studied soil. a Predominant phyla of the bacterial community; b predominant phyla of the fungal community. Unclassified correspond to sequences that could not be assigned to known microbial phyla and Other corresponds to phyla with less than 1% and 0.5% relative abundance