PMID- 29576979 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 2167-8359 (Print) IS - 2167-8359 (Electronic) IS - 2167-8359 (Linking) VI - 6 DP - 2018 TI - Assessing soil bacterial community and dynamics by integrated high-throughput absolute abundance quantification. PG - e4514 LID - 10.7717/peerj.4514 [doi] LID - e4514 AB - Microbial ecological studies have been remarkably promoted by the high-throughput sequencing approach with explosive information of taxonomy and relative abundance. However, relative abundance does not reflect the quantity of the microbial community and the inter-sample differences among taxa. In this study, we refined and applied an integrated high-throughput absolute abundance quantification (iHAAQ) method to better characterize soil quantitative bacterial community through combining the relative abundance (by high-throughput sequencing) and total bacterial quantities (by quantitative PCR). The proposed iHAAQ method was validated by an internal reference strain EDL933 and a laboratory strain WG5. Application of the iHAAQ method to a soil phenanthrene biodegradation study showed that for some bacterial taxa, the changes of relative and absolute abundances were coincident, while for others the changes were opposite. With the addition of a microbial activity inhibitor (NaN(3)), the absolute abundances of soil bacterial taxa, including several dominant genera of Bacillus, Flavobacterium, and Paenibacillus, decreased significantly, but their relative abundances increased after 28 days of incubation. We conclude that the iHAAQ method can offer more comprehensive information to reflect the dynamics of soil bacterial community with both relative and absolute abundances than the relative abundance from high-throughput sequencing alone. FAU - Lou, Jun AU - Lou J AD - Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, China. FAU - Yang, Li AU - Yang L AD - Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, China. FAU - Wang, Haizhen AU - Wang H AD - Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, China. FAU - Wu, Laosheng AU - Wu L AD - Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, China. AD - Department of Environmental Sciences, University of California, Riverside, United States of America. FAU - Xu, Jianming AU - Xu J AD - Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, China. LA - eng PT - Journal Article DEP - 20180314 PL - United States TA - PeerJ JT - PeerJ JID - 101603425 PMC - PMC5857175 OTO - NOTNLM OT - Absolute abundance OT - High-throughput sequencing OT - Quantitative bacterial ecology OT - Soil OT - iHAAQ OT - qPCR COIS- The authors declare there are no competing interests. EDAT- 2018/03/27 06:00 MHDA- 2018/03/27 06:01 CRDT- 2018/03/27 06:00 PHST- 2017/12/14 00:00 [received] PHST- 2018/02/26 00:00 [accepted] PHST- 2018/03/27 06:00 [entrez] PHST- 2018/03/27 06:00 [pubmed] PHST- 2018/03/27 06:01 [medline] AID - 4514 [pii] AID - 10.7717/peerj.4514 [doi] PST - epublish SO - PeerJ. 2018 Mar 14;6:e4514. doi: 10.7717/peerj.4514. eCollection 2018.