PMID- 18712556 OWN - NLM STAT- MEDLINE DCOM- 20090306 LR - 20211020 IS - 1367-5435 (Print) IS - 1367-5435 (Linking) VI - 35 IP - 11 DP - 2008 Nov TI - Use of quantitative real-time PCR to monitor population dynamics of ammonia-oxidizing bacteria in batch process. PG - 1339-44 LID - 10.1007/s10295-008-0416-8 [doi] AB - A quantitative real-time PCR (QPCR) assay with the TaqMan system was used to quantify 16S rRNA genes of beta-proteobacterial ammonia-oxidizing bacteria (AOB) in a batch nitrification bioreactor. Five different sets of primers, together with a TaqMan probe, were used to quantify the 16S rRNA genes of beta-proteobacterial AOB belonging to the Nitrosomonas europaea, Nitrosococcus mobilis, Nitrosomonas nitrosa, and Nitrosomonas cryotolerans clusters, and the genus Nitrosospira. We also used PCR followed by denaturing gradient gel electrophoresis (DGGE), cloning, and sequencing of their 16S rRNA genes to identify the AOB species. Seed sludge from an industrial wastewater treatment process controlling high-strength nitrogen wastewater (500 mg/L NH4+-N) was used as the inoculum for subsequent batch experiment. The Nitrosomonas nitrosa cluster was the predominant AOB (2.3x10(5) copies/mL) in the start-up period of the batch experiment. However, from the exponential growth period, the Nitrosomonas europaea cluster was the most abundant AOB, and its 16S rRNA gene copy number increased to 8.9x10(6) copies/mL. The competitive dominance between the two AOB clusters is consistent with observed differences in ammonia tolerance and substrate affinity. Analysis of the DGGE results indicated the presence of Nitrosomonas europaea ATCC19718 and Nitrosomonas nitrosa Nm90, consistent with the QPCR results. FAU - Lim, Juntaek AU - Lim J AD - School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, Gyungbuk, 790-784, South Korea. jtwwb@postech.ac.kr FAU - Lee, Seungyong AU - Lee S FAU - Hwang, Seokhwan AU - Hwang S LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080820 PL - Germany TA - J Ind Microbiol Biotechnol JT - Journal of industrial microbiology & biotechnology JID - 9705544 RN - 0 (DNA Primers) RN - 0 (DNA, Bacterial) RN - 0 (DNA, Ribosomal) RN - 0 (RNA, Ribosomal, 16S) RN - 0 (Sewage) RN - 7664-41-7 (Ammonia) SB - IM MH - Ammonia/*metabolism MH - *Biodiversity MH - Bioreactors/microbiology MH - DNA Primers/genetics MH - DNA, Bacterial/genetics MH - DNA, Ribosomal/genetics MH - Nitrosomonadaceae/*genetics/isolation & purification/*metabolism MH - Polymerase Chain Reaction/*methods MH - RNA, Ribosomal, 16S/genetics MH - Sewage/microbiology EDAT- 2008/08/21 09:00 MHDA- 2009/03/07 09:00 CRDT- 2008/08/21 09:00 PHST- 2008/03/24 00:00 [received] PHST- 2008/07/29 00:00 [accepted] PHST- 2008/08/21 09:00 [pubmed] PHST- 2009/03/07 09:00 [medline] PHST- 2008/08/21 09:00 [entrez] AID - 10.1007/s10295-008-0416-8 [doi] PST - ppublish SO - J Ind Microbiol Biotechnol. 2008 Nov;35(11):1339-44. doi: 10.1007/s10295-008-0416-8. Epub 2008 Aug 20.