| identification and quantification of uncultivated proteobacteria associated with pyrene degradation in a bioreactor treating pah-contaminated soil. | uncultivated bacteria associated with the degradation of pyrene in a bioreactor treating soil contaminated with polycyclic aromatic hydrocarbons (pah) were identified by dna-based stable-isotope probing (sip) and quantified by real-time quantitative pcr. most of the 16s rrna gene sequences recovered from (13)c-enriched dna fractions clustered phylogenetically within three separate groups of beta- and gamma-proteobacteria unassociated with described genera and were designated "pyrene groups 1, 2 ... | 2006 | 16958754 |