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dc.contributor.authorHamonts, Kelly
dc.contributor.authorClough, Timothy J.
dc.contributor.authorStewart, Alison
dc.contributor.authorClinton, P.
dc.contributor.authorRichardson, A.
dc.contributor.authorWakelin, S.
dc.contributor.authorO'Callaghan, M.
dc.contributor.authorCondron, Leo M.
dc.date.accessioned2017-01-23T03:45:50Z
dc.date.available2012-10-17en
dc.date.issued2013-03-01
dc.date.submitted2012-09-18en
dc.identifier.citationEffect of nitrogen and waterlogging on denitrifier gene abundance, community structure and activity in the rhizosphere of wheat. (2013). FEMS Microbiology Ecology, 83(3), 568-584
dc.identifier.issn0168-6496en
dc.identifier.urihttps://hdl.handle.net/10182/7732
dc.description.abstractMicrobial denitrification plays a key role in determining the availability of soil nitrogen (N) to plants. However, factors influencing the structure and function of denitrifier communities in the rhizosphere remain unclear. Waterlogging can result in root anoxia and increased denitrification, leading to significant N loss from soil and potential nitrous oxide (N2O) emissions. This study investigated denitrifier gene abundance, community structure and activity in the rhizosphere of wheat in response to anoxia and N limitation. Denitrifier community structure in the rhizosphere differed from that in bulk soil, and denitrifier gene copy numbers (nirS, nirK, nosZ) and potential denitrification activity were greater in the rhizosphere. Anoxia and N limitation, and in particular a combination of both, reduced the magnitude of this effect on gene abundance (in particular nirS) and activity, with N limitation having greater impact than waterlogging in rhizosphere soil, in contrast to bulk soil where the impact of waterlogging was greater. Increased N supply to anoxic plants improved plant health and increased rhizosphere soil pH, which resulted in enhanced reduction of N2O. Both anoxia and N limitation significantly influenced the structure and function of denitrifier communities in the rhizosphere, with reduced root-derived carbon postulated to play an important role.en
dc.format.extent568-584en
dc.languageEnglishen
dc.language.isoen
dc.publisherOxford University Press and Blackwell Publishing Ltd on behalf of the Federation of European Microbiological Societies
dc.relationThe original publication is available from - Oxford University Press and Blackwell Publishing Ltd on behalf of the Federation of European Microbiological Societies - https://doi.org/10.1111/1574-6941.12015 - http://dx.doi.org/10.1111/1574-6941.12015en
dc.relation.urihttps://doi.org/10.1111/1574-6941.12015en
dc.rights© 2012 Federation of European Microbiological Societies Published by Blackwell Publishing Ltd. All rights reserved
dc.subjectnitrogen stressen
dc.subjectanoxiaen
dc.subjectnirSen
dc.subjectnirKen
dc.subjectnosZen
dc.subjectquantitative PCRen
dc.subjectDGGEen
dc.subjectMicrobiologyen
dc.subject.meshBacteriaen
dc.subject.meshTriticumen
dc.subject.meshCarbonen
dc.subject.meshOxygenen
dc.subject.meshNitrogenen
dc.subject.meshNitrous Oxideen
dc.subject.meshWateren
dc.subject.meshSoilen
dc.subject.meshSoil Microbiologyen
dc.subject.meshGenes, Bacterialen
dc.subject.meshHydrogen-Ion Concentrationen
dc.subject.meshStress, Physiologicalen
dc.subject.meshFloodsen
dc.subject.meshDenitrificationen
dc.subject.meshRhizosphereen
dc.titleEffect of nitrogen and waterlogging on denitrifier gene abundance, community structure and activity in the rhizosphere of wheaten
dc.typeJournal Article
lu.contributor.unitLincoln University
lu.contributor.unitFaculty of Agriculture and Life Sciences
lu.contributor.unitDepartment of Soil and Physical Sciences
lu.contributor.unitBio-Protection Research Centre
dc.identifier.doi10.1111/1574-6941.12015en
dc.relation.isPartOfFEMS Microbiology Ecologyen
pubs.issue3en
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/SOILS
pubs.organisational-group/LU/BPRC
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/QE18
pubs.publication-statusPublisheden
pubs.publisher-urlhttp://dx.doi.org/10.1111/1574-6941.12015en
pubs.volume83en
dc.identifier.eissn1574-6941en
lu.identifier.orcid0000-0002-5978-5274
lu.identifier.orcid0000-0002-3082-994X


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