Quantification of 16S rRNA gene and ITS fragments in spiked soils.

<p>The qPCR analysis of (a) bacterial 16S rRNA gene copy numbers in samples taken 21 days after spiking (DAS) and (b) of fungal ITS fragment copy numbers in samples taken 63 DAS in the following treatments: unspiked (control), phenanthrene (+P), litter (+L), litter and phenanthrene (+L+P). Different letters within one soil composition mark a significant difference between treatments (Tukey test, p<0.05). Bars indicate standard deviation of four replicates. Q-quartz, M-montmorillonite, C-charcoal, I-illite, F-ferrihydrite, Luv-natural soil (Luvisol).