Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses
- Autores
- Couso, Luciana Laura; Fernandez Alduncin, Roberto Javier
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Background and AimsDespite general agreement regarding the adaptive importance of plasticity, evidence for the role of environmental resource availability in plants is scarce. In arid and semi-arid environments, the persistence and dominance of perennial species depends on their capacity to tolerate drought: tolerance could be given on one extreme by fixed traits and, on the other, by plastic traits. To understand drought tolerance of species it is necessary to know the plasticity of their water economy-related traits, i.e. the position in the fixedplastic continuum.MethodsThree conspicuous co-existing perennial grasses from a Patagonian steppe were grown under controlled conditions with four levels of steady-state water availability. Evaluated traits were divided into two groups. The first was associated with potential plant performance and correlated with fitness, and included above-ground biomass, total biomass, tillering and tiller density at harvest. The second group consisted of traits associated with mechanisms of plant adjustment to environmental changes and included root biomass, shoot/root ratio, tiller biomass, length of total elongated leaf, length of yellow tissue divided by time and nal length divided by the time taken to reach nal length.Key Results and ConclusionsThe most plastic species along this drought gradient was the most sensitive to drought, whereas the least plastic and slowest growing was the most tolerant. This negative relationship between tolerance and plasticity was true for fitness-related traits but was trait-dependent for underlying traits. Remarkably, the most tolerant species had the highest positive plasticity (i.e. opposite to the default response to stress) in an underlying trait, directly explaining its drought resistance: it increased absolute root biomass. The niche differentiation axis that allows the coexistence of species in this group of perennial dryland grasses, all limited by soil surface moisture, would be a functional one of fixed versus plastic responses. © 2012 The Author.
Fil: Couso, Luciana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Fernandez Alduncin, Roberto Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina - Materia
-
BROMUS PICTUS
DRYLAND
MECHANISTIC TRAITS
PAPPOSTIPA SPECIOSA
PERENNIAL GRASSES
PERFORMANCE TRAITS
POA LIGULARIS
TRADE-OFF - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/60301
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Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grassesCouso, Luciana LauraFernandez Alduncin, Roberto JavierBROMUS PICTUSDRYLANDMECHANISTIC TRAITSPAPPOSTIPA SPECIOSAPERENNIAL GRASSESPERFORMANCE TRAITSPOA LIGULARISTRADE-OFFhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Background and AimsDespite general agreement regarding the adaptive importance of plasticity, evidence for the role of environmental resource availability in plants is scarce. In arid and semi-arid environments, the persistence and dominance of perennial species depends on their capacity to tolerate drought: tolerance could be given on one extreme by fixed traits and, on the other, by plastic traits. To understand drought tolerance of species it is necessary to know the plasticity of their water economy-related traits, i.e. the position in the fixedplastic continuum.MethodsThree conspicuous co-existing perennial grasses from a Patagonian steppe were grown under controlled conditions with four levels of steady-state water availability. Evaluated traits were divided into two groups. The first was associated with potential plant performance and correlated with fitness, and included above-ground biomass, total biomass, tillering and tiller density at harvest. The second group consisted of traits associated with mechanisms of plant adjustment to environmental changes and included root biomass, shoot/root ratio, tiller biomass, length of total elongated leaf, length of yellow tissue divided by time and nal length divided by the time taken to reach nal length.Key Results and ConclusionsThe most plastic species along this drought gradient was the most sensitive to drought, whereas the least plastic and slowest growing was the most tolerant. This negative relationship between tolerance and plasticity was true for fitness-related traits but was trait-dependent for underlying traits. Remarkably, the most tolerant species had the highest positive plasticity (i.e. opposite to the default response to stress) in an underlying trait, directly explaining its drought resistance: it increased absolute root biomass. The niche differentiation axis that allows the coexistence of species in this group of perennial dryland grasses, all limited by soil surface moisture, would be a functional one of fixed versus plastic responses. © 2012 The Author.Fil: Couso, Luciana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Fernandez Alduncin, Roberto Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaOxford University Press2012-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/60301Couso, Luciana Laura; Fernandez Alduncin, Roberto Javier; Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses; Oxford University Press; Annals of Botany; 110; 4; 9-2012; 849-8570305-7364CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/aob/mcs147info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/aob/article/110/4/849/149468info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:32:05Zoai:ri.conicet.gov.ar:11336/60301instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:32:06.15CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses |
title |
Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses |
spellingShingle |
Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses Couso, Luciana Laura BROMUS PICTUS DRYLAND MECHANISTIC TRAITS PAPPOSTIPA SPECIOSA PERENNIAL GRASSES PERFORMANCE TRAITS POA LIGULARIS TRADE-OFF |
title_short |
Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses |
title_full |
Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses |
title_fullStr |
Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses |
title_full_unstemmed |
Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses |
title_sort |
Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses |
dc.creator.none.fl_str_mv |
Couso, Luciana Laura Fernandez Alduncin, Roberto Javier |
author |
Couso, Luciana Laura |
author_facet |
Couso, Luciana Laura Fernandez Alduncin, Roberto Javier |
author_role |
author |
author2 |
Fernandez Alduncin, Roberto Javier |
author2_role |
author |
dc.subject.none.fl_str_mv |
BROMUS PICTUS DRYLAND MECHANISTIC TRAITS PAPPOSTIPA SPECIOSA PERENNIAL GRASSES PERFORMANCE TRAITS POA LIGULARIS TRADE-OFF |
topic |
BROMUS PICTUS DRYLAND MECHANISTIC TRAITS PAPPOSTIPA SPECIOSA PERENNIAL GRASSES PERFORMANCE TRAITS POA LIGULARIS TRADE-OFF |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Background and AimsDespite general agreement regarding the adaptive importance of plasticity, evidence for the role of environmental resource availability in plants is scarce. In arid and semi-arid environments, the persistence and dominance of perennial species depends on their capacity to tolerate drought: tolerance could be given on one extreme by fixed traits and, on the other, by plastic traits. To understand drought tolerance of species it is necessary to know the plasticity of their water economy-related traits, i.e. the position in the fixedplastic continuum.MethodsThree conspicuous co-existing perennial grasses from a Patagonian steppe were grown under controlled conditions with four levels of steady-state water availability. Evaluated traits were divided into two groups. The first was associated with potential plant performance and correlated with fitness, and included above-ground biomass, total biomass, tillering and tiller density at harvest. The second group consisted of traits associated with mechanisms of plant adjustment to environmental changes and included root biomass, shoot/root ratio, tiller biomass, length of total elongated leaf, length of yellow tissue divided by time and nal length divided by the time taken to reach nal length.Key Results and ConclusionsThe most plastic species along this drought gradient was the most sensitive to drought, whereas the least plastic and slowest growing was the most tolerant. This negative relationship between tolerance and plasticity was true for fitness-related traits but was trait-dependent for underlying traits. Remarkably, the most tolerant species had the highest positive plasticity (i.e. opposite to the default response to stress) in an underlying trait, directly explaining its drought resistance: it increased absolute root biomass. The niche differentiation axis that allows the coexistence of species in this group of perennial dryland grasses, all limited by soil surface moisture, would be a functional one of fixed versus plastic responses. © 2012 The Author. Fil: Couso, Luciana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina Fil: Fernandez Alduncin, Roberto Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina |
description |
Background and AimsDespite general agreement regarding the adaptive importance of plasticity, evidence for the role of environmental resource availability in plants is scarce. In arid and semi-arid environments, the persistence and dominance of perennial species depends on their capacity to tolerate drought: tolerance could be given on one extreme by fixed traits and, on the other, by plastic traits. To understand drought tolerance of species it is necessary to know the plasticity of their water economy-related traits, i.e. the position in the fixedplastic continuum.MethodsThree conspicuous co-existing perennial grasses from a Patagonian steppe were grown under controlled conditions with four levels of steady-state water availability. Evaluated traits were divided into two groups. The first was associated with potential plant performance and correlated with fitness, and included above-ground biomass, total biomass, tillering and tiller density at harvest. The second group consisted of traits associated with mechanisms of plant adjustment to environmental changes and included root biomass, shoot/root ratio, tiller biomass, length of total elongated leaf, length of yellow tissue divided by time and nal length divided by the time taken to reach nal length.Key Results and ConclusionsThe most plastic species along this drought gradient was the most sensitive to drought, whereas the least plastic and slowest growing was the most tolerant. This negative relationship between tolerance and plasticity was true for fitness-related traits but was trait-dependent for underlying traits. Remarkably, the most tolerant species had the highest positive plasticity (i.e. opposite to the default response to stress) in an underlying trait, directly explaining its drought resistance: it increased absolute root biomass. The niche differentiation axis that allows the coexistence of species in this group of perennial dryland grasses, all limited by soil surface moisture, would be a functional one of fixed versus plastic responses. © 2012 The Author. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09 |
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 |
http://hdl.handle.net/11336/60301 Couso, Luciana Laura; Fernandez Alduncin, Roberto Javier; Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses; Oxford University Press; Annals of Botany; 110; 4; 9-2012; 849-857 0305-7364 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/60301 |
identifier_str_mv |
Couso, Luciana Laura; Fernandez Alduncin, Roberto Javier; Phenotypic plasticity as an index of drought tolerance in three Patagonian steppe grasses; Oxford University Press; Annals of Botany; 110; 4; 9-2012; 849-857 0305-7364 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1093/aob/mcs147 info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/aob/article/110/4/849/149468 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Oxford University Press |
publisher.none.fl_str_mv |
Oxford University Press |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614333724622848 |
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13.070432 |