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dc.contributor.author
Pastor Pastor, Alejandro
dc.contributor.author
Vilela, Alejandra Elena
dc.contributor.author
González Paleo, Luciana
dc.date.available
2022-03-18T03:27:39Z
dc.date.issued
2021-08
dc.identifier.citation
Pastor Pastor, Alejandro; Vilela, Alejandra Elena; González Paleo, Luciana; Age-related changes in root traits are linked to internal nitrogen cycling in the perennial forb Physaria (Brassicaceae); Gauthier-Villars/Editions Elsevier; Acta Oecologica; 111; 103729; 8-2021; 1-6
dc.identifier.issn
1146-609X
dc.identifier.uri
http://hdl.handle.net/11336/153553
dc.description.abstract
Age-related changes in root morphology and physiology, and the relationship with N dynamics between species that differ in resource use (i.e., conservative or acquisitive) and lifespan strategies are largely unexplored and experimental evidence very scarce. Objective: to compare age-related changes in root traits and their relationship with internal N recycling in two co-generic perennial species differing in their resource-use strategy and plant lifespan. We hypothesized that the root system of both species will become more conservative with age, but the root system of the acquisitive short-lived Physaria pinetorum (Brassicaceae) will decrease its acquisition capacity while the conservative long-lived P. mendocina will increase its storage capacity. Results and conclusion: we confirmed that the root system of both species shifts from acquisitive to conservative with age, reducing N acquisition and relying either on N translocation from leaves or root stores to sustain growth and grain filling. As hypothesized, the species responded differentially according to their longevity and resource-use strategy: P. pinetorum showed a great loss of acquisition and storage capacities with absolute age, and turned to N stores when acquisition was deficient while P. mendocina increased storage capacity with age and obtained N from resorption to sustain allocation to grain, decreasing the quality of its litter. Species differing in their plant lifespan and resource use strategies have different patterns of N dynamics with age, that could affect yield stability and the provision of ecosystem services.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Gauthier-Villars/Editions Elsevier
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
N LEAF
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N RESORPTION
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N STORAGE
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PROFICIENCY
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RTD
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SRL
dc.subject.classification
Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Age-related changes in root traits are linked to internal nitrogen cycling in the perennial forb Physaria (Brassicaceae)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-03-14T21:07:09Z
dc.identifier.eissn
1873-6238
dc.journal.volume
111
dc.journal.number
103729
dc.journal.pagination
1-6
dc.journal.pais
Francia
dc.description.fil
Fil: Pastor Pastor, Alejandro. Museo Paleontológico Egidio Feruglio; Argentina
dc.description.fil
Fil: Vilela, Alejandra Elena. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: González Paleo, Luciana. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
dc.journal.title
Acta Oecologica
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1146609X2100028X
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.actao.2021.103729
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