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dc.contributor.authorRandall, Kate
dc.contributor.authorBrennan, Fiona P.
dc.contributor.authorClipson, Nicholas
dc.contributor.authorCreamer, Rachel
dc.contributor.authorGriffiths, Bryan
dc.contributor.authorStorey, Sean
dc.contributor.authorDoyle, Evelyn
dc.date.accessioned2019-10-30T13:08:09Z
dc.date.available2019-10-30T13:08:09Z
dc.date.issued2019-03-06
dc.identifier.citationRandall, K., Brennan, F., Clipson, N., Creamer, R., Griffiths, B., Storey, S. and Doyle, E. Soil bacterial community structure and functional responses across a long-term mineral phosphorus (Pi) fertilisation gradient differ in grazed and cut grasslands. Applied Soil Ecology, 2019, 138, 134-143. DOI: https://doi.org/10.1016/j.apsoil.2019.02.002en_US
dc.identifier.issn0929-1393
dc.identifier.urihttp://hdl.handle.net/11019/1810
dc.descriptionpeer-revieweden_US
dc.description.abstractGrasslands form a significant proportion of land used across the globe and future management is important. The objective of this study was to compare the long-term impact of inorganic phosphorus (Pi) fertilisation rates (P0, P15 and P30 ha−1 yr−1) under two grass management trials (grazed vs. cut and removed) on soil physicochemical properties, microbial biomass, phosphomonoesterase activity, bacterial community structure and abundance of a phosphorus (P) mineralising gene (phoD). Under grazing, microbial biomass and soil phosphorus concentrations (total and Pi) generally increased with Pi fertilisation rate, accompanied by significant differences in bacterial community structure between unfertilised (P0) and P30 soil. At the cut and removed site, although Pi was significantly greater in P30 soil, P concentrations (total and Pi) did not increase to the same extent as for grazing, with microbial biomass and bacterial community structures unresponsive to Pi fertilisation. Despite differences in soil P concentrations (total and Pi) and microbial biomass between sites, the abundance of bacterial phoD increased with increasing soil Pi across both sites, while phosphomonoesterase activity decreased. Amplicon sequencing revealed Acidobacteria were the dominant bacterial phylum across both grasslands, but significant differences in relative abundances of bacterial genera were detected at the grazed site only. The bacterial genera Gp6 and Gp16 increased significantly with Pi fertilisation under grazing. Conversely, Bradyrhizobium as well as unclassified genus-type groups belonging to Actinobacteria and Acidimicrobiales significantly decreased with Pi fertilisation, suggesting potential roles in P mobilisation when soil Pi concentrations are low. This study highlights the importance of long-term Pi fertilisation rates and aboveground vegetation removal in shaping soil bacterial community structure and microbial biomass, which in turn may impact soil fertility and plant productivity within agricultural soils.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofseriesApplied Soil Ecology;Vol. 138
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectAgricultural managementen_US
dc.subjectBacteriaen_US
dc.subjectGrasslanden_US
dc.subjectPhosphorusen_US
dc.subjectSoilen_US
dc.titleSoil bacterial community structure and functional responses across a long-term mineral phosphorus (Pi) fertilisation gradient differ in grazed and cut grasslandsen_US
dc.typeArticleen_US
dc.embargo.terms2021-03-06en_US
dc.identifier.doihttps://doi.org/10.1016/j.apsoil.2019.02.002
dc.contributor.sponsorProgramme for Research in Third-Level Institutionsen_US
dc.contributor.sponsorEuropean Regional Development Funden_US
dc.source.volume138
dc.source.beginpage134-143


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