The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences

Autores
Xiao, Ying Gong; Berone, German Dario; Agnusdei, Monica Graciela; Rodríguez Palma, Ricardo Manuel; Schäufele, Rudi; Lattanzi, Fernando Alfredo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In grasslands, sustained nitrogen loading would increase the proportion of assimilated carbon allocated to shoot growth (A shoot), because it would decrease allocation to roots and also encourage the contribution of species with inherently high A shoot. However, in situ measurements of carbon allocation are scarce. Therefore, it is unclear to what extent species that coexist in grasslands actually differ in their allocation strategy or in their response to nitrogen. We used a mobile facility to perform steady-state 13C-labeling of field stands to quantify, in winter and autumn, the daily relative photosynthesis rate (RPR~tracer assimilated over one light-period) and A shoot (~tracer remaining in shoots after a 100 degree days chase period) in four individual species with contrasting morpho-physiological characteristics coexisting in a temperate grassland of Argentina, either fertilized or not with nitrogen, and either cut intermittently or grazed continuously. Plasticity in response to nitrogen was substantial in most species, as indicated by positive correlations between A shoot and shoot nitrogen concentration. There was a notable interspecific difference: productive species with higher RPR, enhanced by fertilization and characterized by faster leaf turnover rate, allocated ~20 % less of the assimilated carbon to shoot growth than species of lower productivity (and quality) characterized by longer leaf life spans and phyllochrons. These results imply that, opposite to the expected response, sustained nitrogen loading would change little the A shoot of grassland communities if increases at the species-level are offset by decreases associated with replacement of ‘low RPR-high A shoot’ species by ‘high RPR-low A shoot’ species.
EEA Rafaela
Fil: Xiao, Ying Gong. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania
Fil: Berone, German Dario. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Rodríguez Palma, Ricardo Manuel. Universidad de República. Facultad de Agronomía. Departamento de Producción Animal y Pasturas. Estación Experimental en Salto; Uruguay
Fil: Schäufele, Rudi. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania
Fil: Lattanzi, Fernando Alfredo. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania
Fuente
Oecologia 174 (4) : 1085–1095 (April 2014)
Materia
Praderas
Carbono
Nitrógeno
Brotes
Crecimiento
Grasslands
Carbon
Nitrogen
Shoots
Growth
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/2979
Acceder
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oai_identifier_str oai:localhost:20.500.12123/2979
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spelling The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differencesXiao, Ying GongBerone, German DarioAgnusdei, Monica GracielaRodríguez Palma, Ricardo ManuelSchäufele, RudiLattanzi, Fernando AlfredoPraderasCarbonoNitrógenoBrotesCrecimientoGrasslandsCarbonNitrogenShootsGrowthIn grasslands, sustained nitrogen loading would increase the proportion of assimilated carbon allocated to shoot growth (A shoot), because it would decrease allocation to roots and also encourage the contribution of species with inherently high A shoot. However, in situ measurements of carbon allocation are scarce. Therefore, it is unclear to what extent species that coexist in grasslands actually differ in their allocation strategy or in their response to nitrogen. We used a mobile facility to perform steady-state 13C-labeling of field stands to quantify, in winter and autumn, the daily relative photosynthesis rate (RPR~tracer assimilated over one light-period) and A shoot (~tracer remaining in shoots after a 100 degree days chase period) in four individual species with contrasting morpho-physiological characteristics coexisting in a temperate grassland of Argentina, either fertilized or not with nitrogen, and either cut intermittently or grazed continuously. Plasticity in response to nitrogen was substantial in most species, as indicated by positive correlations between A shoot and shoot nitrogen concentration. There was a notable interspecific difference: productive species with higher RPR, enhanced by fertilization and characterized by faster leaf turnover rate, allocated ~20 % less of the assimilated carbon to shoot growth than species of lower productivity (and quality) characterized by longer leaf life spans and phyllochrons. These results imply that, opposite to the expected response, sustained nitrogen loading would change little the A shoot of grassland communities if increases at the species-level are offset by decreases associated with replacement of ‘low RPR-high A shoot’ species by ‘high RPR-low A shoot’ species.EEA RafaelaFil: Xiao, Ying Gong. Technische Universität München. Lehrstuhl für Grünlandlehre; AlemaniaFil: Berone, German Dario. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Rodríguez Palma, Ricardo Manuel. Universidad de República. Facultad de Agronomía. Departamento de Producción Animal y Pasturas. Estación Experimental en Salto; UruguayFil: Schäufele, Rudi. Technische Universität München. Lehrstuhl für Grünlandlehre; AlemaniaFil: Lattanzi, Fernando Alfredo. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania2018-08-06T12:25:52Z2018-08-06T12:25:52Z2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://link.springer.com/article/10.1007/s00442-013-2838-xhttp://hdl.handle.net/20.500.12123/29790029-85491432-1939https://doi.org/10.1007/s00442-013-2838-xOecologia 174 (4) : 1085–1095 (April 2014)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-04T09:47:23Zoai:localhost:20.500.12123/2979instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-04 09:47:24.395INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
title The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
spellingShingle The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
Xiao, Ying Gong
Praderas
Carbono
Nitrógeno
Brotes
Crecimiento
Grasslands
Carbon
Nitrogen
Shoots
Growth
title_short The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
title_full The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
title_fullStr The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
title_full_unstemmed The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
title_sort The allocation of assimilated carbon to shoot growth: in situ assessment in natural grasslands reveals nitrogen effects and interspecific differences
dc.creator.none.fl_str_mv Xiao, Ying Gong
Berone, German Dario
Agnusdei, Monica Graciela
Rodríguez Palma, Ricardo Manuel
Schäufele, Rudi
Lattanzi, Fernando Alfredo
author Xiao, Ying Gong
author_facet Xiao, Ying Gong
Berone, German Dario
Agnusdei, Monica Graciela
Rodríguez Palma, Ricardo Manuel
Schäufele, Rudi
Lattanzi, Fernando Alfredo
author_role author
author2 Berone, German Dario
Agnusdei, Monica Graciela
Rodríguez Palma, Ricardo Manuel
Schäufele, Rudi
Lattanzi, Fernando Alfredo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Praderas
Carbono
Nitrógeno
Brotes
Crecimiento
Grasslands
Carbon
Nitrogen
Shoots
Growth
topic Praderas
Carbono
Nitrógeno
Brotes
Crecimiento
Grasslands
Carbon
Nitrogen
Shoots
Growth
dc.description.none.fl_txt_mv In grasslands, sustained nitrogen loading would increase the proportion of assimilated carbon allocated to shoot growth (A shoot), because it would decrease allocation to roots and also encourage the contribution of species with inherently high A shoot. However, in situ measurements of carbon allocation are scarce. Therefore, it is unclear to what extent species that coexist in grasslands actually differ in their allocation strategy or in their response to nitrogen. We used a mobile facility to perform steady-state 13C-labeling of field stands to quantify, in winter and autumn, the daily relative photosynthesis rate (RPR~tracer assimilated over one light-period) and A shoot (~tracer remaining in shoots after a 100 degree days chase period) in four individual species with contrasting morpho-physiological characteristics coexisting in a temperate grassland of Argentina, either fertilized or not with nitrogen, and either cut intermittently or grazed continuously. Plasticity in response to nitrogen was substantial in most species, as indicated by positive correlations between A shoot and shoot nitrogen concentration. There was a notable interspecific difference: productive species with higher RPR, enhanced by fertilization and characterized by faster leaf turnover rate, allocated ~20 % less of the assimilated carbon to shoot growth than species of lower productivity (and quality) characterized by longer leaf life spans and phyllochrons. These results imply that, opposite to the expected response, sustained nitrogen loading would change little the A shoot of grassland communities if increases at the species-level are offset by decreases associated with replacement of ‘low RPR-high A shoot’ species by ‘high RPR-low A shoot’ species.
EEA Rafaela
Fil: Xiao, Ying Gong. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania
Fil: Berone, German Dario. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Rodríguez Palma, Ricardo Manuel. Universidad de República. Facultad de Agronomía. Departamento de Producción Animal y Pasturas. Estación Experimental en Salto; Uruguay
Fil: Schäufele, Rudi. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania
Fil: Lattanzi, Fernando Alfredo. Technische Universität München. Lehrstuhl für Grünlandlehre; Alemania
description In grasslands, sustained nitrogen loading would increase the proportion of assimilated carbon allocated to shoot growth (A shoot), because it would decrease allocation to roots and also encourage the contribution of species with inherently high A shoot. However, in situ measurements of carbon allocation are scarce. Therefore, it is unclear to what extent species that coexist in grasslands actually differ in their allocation strategy or in their response to nitrogen. We used a mobile facility to perform steady-state 13C-labeling of field stands to quantify, in winter and autumn, the daily relative photosynthesis rate (RPR~tracer assimilated over one light-period) and A shoot (~tracer remaining in shoots after a 100 degree days chase period) in four individual species with contrasting morpho-physiological characteristics coexisting in a temperate grassland of Argentina, either fertilized or not with nitrogen, and either cut intermittently or grazed continuously. Plasticity in response to nitrogen was substantial in most species, as indicated by positive correlations between A shoot and shoot nitrogen concentration. There was a notable interspecific difference: productive species with higher RPR, enhanced by fertilization and characterized by faster leaf turnover rate, allocated ~20 % less of the assimilated carbon to shoot growth than species of lower productivity (and quality) characterized by longer leaf life spans and phyllochrons. These results imply that, opposite to the expected response, sustained nitrogen loading would change little the A shoot of grassland communities if increases at the species-level are offset by decreases associated with replacement of ‘low RPR-high A shoot’ species by ‘high RPR-low A shoot’ species.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
2018-08-06T12:25:52Z
2018-08-06T12:25:52Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://link.springer.com/article/10.1007/s00442-013-2838-x
http://hdl.handle.net/20.500.12123/2979
0029-8549
1432-1939
https://doi.org/10.1007/s00442-013-2838-x
url https://link.springer.com/article/10.1007/s00442-013-2838-x
http://hdl.handle.net/20.500.12123/2979
https://doi.org/10.1007/s00442-013-2838-x
identifier_str_mv 0029-8549
1432-1939
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Oecologia 174 (4) : 1085–1095 (April 2014)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.623145

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