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dc.contributor.authorSamad, Sainur*
dc.contributor.authorBiswas, Ambarish*
dc.contributor.authorBakken, Lars R.*
dc.contributor.authorClough, Timothy J.*
dc.contributor.authorde Klein, Cecile A.M.*
dc.contributor.authorRichards, Karl G.*
dc.contributor.authorLanigan, Gary*
dc.contributor.authorMorales, Sergio E.*
dc.date.accessioned2017-08-29T10:30:56Z
dc.date.available2017-08-29T10:30:56Z
dc.date.issued26/10/2016
dc.identifier.citationSamad MS, Biswas A, Bakken LR, Clough TJ, de Klein CAM, Richards KG, Lanigan GJ, Morales SE. Phylogenetic and functional potential links pH and N2O emissions in pasture soils. 2016;6:35990; doi 10.1038/srep35990en_GB
dc.identifier.urihttp://hdl.handle.net/11019/1508
dc.descriptionThis work was funded by the New Zealand Government through the New Zealand Fund for Global Partnerships in Livestock Emissions Research to support the objectives of the Livestock Research Group of the Global Research Alliance on Agricultural Greenhouse Gases (Agreement number: 16084) awarded to SEM and the University of Otago.
dc.descriptionpeer-revieweden_GB
dc.description.abstractDenitrification is mediated by microbial, and physicochemical, processes leading to nitrogen loss via N2O and N2 emissions. Soil pH regulates the reduction of N2O to N2, however, it can also affect microbial community composition and functional potential. Here we simultaneously test the link between pH, community composition, and the N2O emission ratio (N2O/(NO + N2O + N2)) in 13 temperate pasture soils. Physicochemical analysis, gas kinetics, 16S rRNA amplicon sequencing, metagenomic and quantitative PCR (of denitrifier genes: nirS, nirK, nosZI and nosZII) analysis were carried out to characterize each soil. We found strong evidence linking pH to both N2O emission ratio and community changes. Soil pH was negatively associated with N2O emission ratio, while being positively associated with both community diversity and total denitrification gene (nir & nos) abundance. Abundance of nosZII was positively linked to pH, and negatively linked to N2O emissions. Our results confirm that pH imposes a general selective pressure on the entire community and that this results in changes in emission potential. Our data also support the general model that with increased microbial diversity efficiency increases, demonstrated in this study with lowered N2O emission ratio through more efficient conversion of N2O to N2.en_GB
dc.description.sponsorshipNew Zealand Fund for Global Partnerships in Livestock Emissions Researchen_GB
dc.language.isoenen_GB
dc.publisherNature Publishing Groupen_GB
dc.relation.ispartofseriesScientific Reports;
dc.subjectSoil analysisen_GB
dc.subjectpHen_GB
dc.subjectDenitrificationen_GB
dc.subjectN2O emission ratioen_GB
dc.subjectcommunity diversityen_GB
dc.subjecttotal denitrification gene (nir & nos)en_GB
dc.subjectmicrobial diversityen_GB
dc.titlePhylogenetic and functional potential links pH and N2O emissions in pasture soilsen_GB
dc.typeArticleen_GB
dc.identifier.rmisJCEV-0321-6514
dc.identifier.doihttp://dx.doi.org/10.1038/srep35990
dc.contributor.sponsorNew Zealand Fund for Global Partnerships in Livestock Emissions Research
refterms.dateFOA2018-01-12T09:00:36Z


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