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dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.authorFlorez Zapata, Nathalia Maria Vanesa
dc.contributor.authorGarcia, Juan Carlos
dc.contributor.authorDel Portillo, Patricia
dc.contributor.authorRestrepo, Silvia
dc.contributor.authorUribe Vélez, Daniel
dc.description.abstractIn the S. tuberosum group phureja crops, mineral fertilizer and organic amendments are applied to meet the plants’ nutritional demands, however the effect of such practices on the associated rizospheric microbial communities are still unknown. Nitrogen plays an important role in agricultural production, and a great diversity of microorganisms regulates its transformation in the soil, affecting its availability for the plant. The aim of this study was to assess the structure of microbal[trm1]  communities related with the N cycle of S. tuberosum group phureja  rizospheric soil samples, with contrasting physical-chemical properties and fertilization strategy.  Few significant differences between the community composition at the phylum level were found, only Planctomycetes phylum was different between samples of different soil type and fertilization strategy. However, the analysis of nitrogen-associated functional groups made by ribotyping characterization, grouped soils in terms of such variables in a similar way to the physical-chemical properties. Major differences between soil samples were typified by higher percentages of the ribotypes from nitrite oxidation, nitrogen fixation and denitrification on organic amendment soils. Our results suggest that, the dominant rhizosphere microbial composition is very similar between soils, possibly as a result of population’s selection mediated by the rhizosphere effect. However, agricultural management practices in addition to edaphic properties of sampled areas, appear to affect some functional groups associated with the nitrogen cycling, due to differences found on soil’s physical-chemical properties, like the concentration of ammonium that seems to have an effect regulating the distribution and activity of nitrogen related functional groups in the S. tuberosum rhizosphere.
dc.publisherUniversidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Acta Biológica Colombiana
dc.relation.ispartofActa Biológica Colombiana
dc.relation.ispartofseriesActa Biológica Colombiana; Vol. 18, núm. 3 (2013); 449-464 Acta Biológica Colombiana; Vol. 18, núm. 3 (2013); 449-464 1900-1649 0120-548X
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.titleComposition and function of the microbial community related with the nitrogen cycling on the potato rhizosphere
dc.typeArtículo de revista
dc.relation.referencesFlorez Zapata, Nathalia Maria Vanesa and Garcia, Juan Carlos and Del Portillo, Patricia and Restrepo, Silvia and Uribe Vélez, Daniel (2013) Composition and function of the microbial community related with the nitrogen cycling on the potato rhizosphere. Acta Biológica Colombiana; Vol. 18, núm. 3 (2013); 449-464 Acta Biológica Colombiana; Vol. 18, núm. 3 (2013); 449-464 1900-1649 0120-548X .
dc.subject.proposalNitrogen cycle
dc.subject.proposalSolanum phureja.

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Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit