PMID- 26098417 OWN - NLM STAT- MEDLINE DCOM- 20160321 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 6 DP - 2015 TI - Novel Phenanthrene-Degrading Bacteria Identified by DNA-Stable Isotope Probing. PG - e0130846 LID - 10.1371/journal.pone.0130846 [doi] LID - e0130846 AB - Microorganisms responsible for the degradation of phenanthrene in a clean forest soil sample were identified by DNA-based stable isotope probing (SIP). The soil was artificially amended with either 12C- or 13C-labeled phenanthrene, and soil DNA was extracted on days 3, 6 and 9. Terminal restriction fragment length polymorphism (TRFLP) results revealed that the fragments of 219- and 241-bp in HaeIII digests were distributed throughout the gradient profile at three different sampling time points, and both fragments were more dominant in the heavy fractions of the samples exposed to the 13C-labeled contaminant. 16S rRNA sequencing of the 13C-enriched fraction suggested that Acidobacterium spp. within the class Acidobacteria, and Collimonas spp. within the class Betaproteobacteria, were directly involved in the uptake and degradation of phenanthrene at different times. To our knowledge, this is the first report that the genus Collimonas has the ability to degrade PAHs. Two PAH-RHDalpha genes were identified in 13C-labeled DNA. However, isolation of pure cultures indicated that strains of Staphylococcus sp. PHE-3, Pseudomonas sp. PHE-1, and Pseudomonas sp. PHE-2 in the soil had high phenanthrene-degrading ability. This emphasizes the role of a culture-independent method in the functional understanding of microbial communities in situ. FAU - Jiang, Longfei AU - Jiang L AD - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China. FAU - Song, Mengke AU - Song M AD - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Graduate University of Chinese Academy of Sciences, Beijing, 100039, China. FAU - Luo, Chunling AU - Luo C AD - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China. FAU - Zhang, Dayi AU - Zhang D AD - Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, United Kingdom. FAU - Zhang, Gan AU - Zhang G AD - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150622 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Carbon Isotopes) RN - 0 (DNA Probes) RN - 0 (Phenanthrenes) RN - 0 (RNA, Ribosomal, 16S) RN - 0 (Soil) RN - 448J8E5BST (phenanthrene) SB - IM MH - Acidobacteria/*metabolism MH - Base Sequence MH - Betaproteobacteria/*metabolism MH - Carbon Isotopes/metabolism MH - DNA Probes MH - Environmental Restoration and Remediation/*methods MH - Isotope Labeling MH - Molecular Sequence Data MH - Phenanthrenes/analysis/*metabolism MH - Polymorphism, Restriction Fragment Length MH - RNA, Ribosomal, 16S/genetics MH - Sequence Analysis, RNA MH - Soil/*chemistry PMC - PMC4476716 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/06/23 06:00 MHDA- 2016/03/22 06:00 PMCR- 2015/06/22 CRDT- 2015/06/23 06:00 PHST- 2015/05/06 00:00 [received] PHST- 2015/05/13 00:00 [accepted] PHST- 2015/06/23 06:00 [entrez] PHST- 2015/06/23 06:00 [pubmed] PHST- 2016/03/22 06:00 [medline] PHST- 2015/06/22 00:00 [pmc-release] AID - PONE-D-15-19645 [pii] AID - 10.1371/journal.pone.0130846 [doi] PST - epublish SO - PLoS One. 2015 Jun 22;10(6):e0130846. doi: 10.1371/journal.pone.0130846. eCollection 2015.