Denitrification at pH 4 by a soil-derived Rhodanobacter-dominated community

Environmental Microbiology
R N van den HeuvelB Kartal

Abstract

Soil denitrification is a major source of nitrous oxide emission that causes ozone depletion and global warming. Low soil pH influences the relative amount of N₂O produced and consumed by denitrification. Furthermore, denitrification is strongly inhibited in pure cultures of denitrifying microorganisms below pH 5. Soils, however, have been shown to denitrify at pH values as low as pH 3. Here we used a continuous bioreactor to investigate the possibility of significant denitrification at low pH under controlled conditions with soil microorganisms and naturally available electron donors. Significant NO₃⁻ and N₂O reduction were observed for 3 months without the addition of any external electron donor. Batch incubations with the enriched biomass showed that low pH as well as low electron donor availability promoted the relative abundance of N₂O as denitrification end-product. Molecular analysis of the enriched biomass revealed that a Rhodanobacter-like bacterium dominated the community in 16S rRNA gene libraries as well as in FISH microscopy during the highest denitrification activity in the reactor. We conclude that denitrification at pH 4 with natural electron donors is possible and that a Rhodanobacter species may be one of the ...Continue Reading

References

Jan 1, 1982·Antonie van Leeuwenhoek·J M TiedjeJ A Robinson
Mar 1, 1982·Microbiological Reviews·R Knowles
Feb 24, 1999·International Journal of Systematic Bacteriology·R NalinP Normand
Aug 23, 2003·Journal of Environmental Quality·Mariet M HeftingHannie de Caluwe
Oct 7, 2003·Annual Review of Microbiology·Michael S Rappé, Stephen J Giovannoni
Aug 1, 1980·Applied and Environmental Microbiology·M M MüllerJ Skujins
May 1, 1985·Applied and Environmental Microbiology·T B ParkinJ M Tiedje
Jun 30, 2006·Journal of Biotechnology·Boran KartalMarc Strous
Aug 12, 2006·International Journal of Systematic and Evolutionary Microbiology·Deborah De ClercqJaak Ryckeboer
Jan 9, 2007·Ecological Applications : a Publication of the Ecological Society of America·Matthew D WallensteinMary Voytek
Aug 9, 2007·International Journal of Systematic and Evolutionary Microbiology·Chang Soo LeeSung-Taik Lee
Mar 1, 1946·Science·A Adel
Dec 1, 2007·International Journal of Systematic and Evolutionary Microbiology·Hang-Yeon WeonBon-Sung Koo
Jul 24, 2008·Environmental Microbiology·Alexander LoyMatthias Horn
Mar 6, 2009·Environmental Microbiology·Laurent PhilippotMiloslav Simek
Mar 31, 2009·International Journal of Systematic and Evolutionary Microbiology·Dong-Shan AnWan-Taek Im
Apr 21, 2009·Applied and Environmental Microbiology·Saleema Saleh-LakhaDavid L Burton
Feb 2, 2010·Applied and Environmental Microbiology·Jirí CuhelLaurent Philippot

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Citations

Aug 28, 1998·Trends in Biotechnology·A J Dickson
Jun 5, 2012·Applied and Environmental Microbiology·Katharina Palmer, Marcus A Horn
Dec 15, 2010·Applied and Environmental Microbiology·Bao-lan HuBoran Kartal
Jul 2, 2014·TheScientificWorldJournal·Xiaofei LvHuifeng Wu
Dec 6, 2011·International Journal of Systematic and Evolutionary Microbiology·Om PrakashJoel E Kostka
Feb 25, 2011·PloS One·Alexandros KiparissidesAthanasios Mantalaris
Jul 12, 2017·The ISME Journal·Pawel LycusÅsa Frostegård
Feb 23, 2018·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Bo-Min KiKyung-Suk Cho
Dec 14, 2018·The ISME Journal·Hans K CarlsonAdam M Deutschbauer
Jul 25, 2019·Frontiers in Microbiology·Amélie DukundeRolf Daniel
Apr 11, 2021·Applied and Environmental Microbiology·Xiao-Yi XingBao-Li Zhu

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