Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina

Autores
Saha, Sonali; Holbrook, Michell N; Montti, Lia Fernanda; Goldstein, Guillermo Hernan; Knust Cardinot, Gina
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Bamboos are prominent components of many tropical ecosystems, yet little is known about the physiological mechanisms utilized by these gigantic forest grasses. Here, we present data on the water transport properties of Chusquea ramosissima and Merostachys claussenii, monocarpic bamboo grasses native to the subtropical Atlantic forests of Argentina. C. ramosissima and M. claussenii differed in their growth form and exhibited contrasting strategies of water transport. Maximum xylem hydraulic conductivity of C. ramosissima culms was 2-fold higher than that of M. claussenii. C. ramosissima cavitated at relatively high water potentials (50% loss of conductivity at ≥1 MPa), whereas M. claussenii was more drought tolerant (50% loss at ≤3 MPa). Both species exhibited significant loss of hydraulic conductivity during the day, which was reversed overnight due to the generation of root pressure. The photosynthetic capacities of both bamboo species, estimated based on electron transport rates, were moderate, reflecting both the large amount of leaf area supported by culms and diurnal loss of hydraulic conductivity due to cavitation. Leaf hydraulic conductance was also relatively low for both species, congruent with their modest photosynthetic capacities. Within its native range, C. ramosissima is highly invasive due to its ability to colonize and persist in both forest gaps and land cleared for agriculture. We propose that a highly vulnerable vasculature, coupled with diurnal root pressure and an allometry that allows substantial leaf area to be supported on relatively slender culms, are key traits contributing to the ecological success of C. ramosissima.
Fil: Saha, Sonali. Harvard University; Estados Unidos
Fil: Holbrook, Michell N. Harvard University; Estados Unidos
Fil: Montti, Lia Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina
Fil: Goldstein, Guillermo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina
Fil: Knust Cardinot, Gina. Instituto de Pesquisa Ambiental da Amazônia; Brasil
Materia
Bamboo
Atlantic Forest
Hydraulic Conductivity
Root Pressure
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/74995

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network_name_str CONICET Digital (CONICET)
spelling Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, ArgentinaSaha, SonaliHolbrook, Michell NMontti, Lia FernandaGoldstein, Guillermo HernanKnust Cardinot, GinaBambooAtlantic ForestHydraulic ConductivityRoot Pressurehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Bamboos are prominent components of many tropical ecosystems, yet little is known about the physiological mechanisms utilized by these gigantic forest grasses. Here, we present data on the water transport properties of Chusquea ramosissima and Merostachys claussenii, monocarpic bamboo grasses native to the subtropical Atlantic forests of Argentina. C. ramosissima and M. claussenii differed in their growth form and exhibited contrasting strategies of water transport. Maximum xylem hydraulic conductivity of C. ramosissima culms was 2-fold higher than that of M. claussenii. C. ramosissima cavitated at relatively high water potentials (50% loss of conductivity at ≥1 MPa), whereas M. claussenii was more drought tolerant (50% loss at ≤3 MPa). Both species exhibited significant loss of hydraulic conductivity during the day, which was reversed overnight due to the generation of root pressure. The photosynthetic capacities of both bamboo species, estimated based on electron transport rates, were moderate, reflecting both the large amount of leaf area supported by culms and diurnal loss of hydraulic conductivity due to cavitation. Leaf hydraulic conductance was also relatively low for both species, congruent with their modest photosynthetic capacities. Within its native range, C. ramosissima is highly invasive due to its ability to colonize and persist in both forest gaps and land cleared for agriculture. We propose that a highly vulnerable vasculature, coupled with diurnal root pressure and an allometry that allows substantial leaf area to be supported on relatively slender culms, are key traits contributing to the ecological success of C. ramosissima.Fil: Saha, Sonali. Harvard University; Estados UnidosFil: Holbrook, Michell N. Harvard University; Estados UnidosFil: Montti, Lia Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; ArgentinaFil: Goldstein, Guillermo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; ArgentinaFil: Knust Cardinot, Gina. Instituto de Pesquisa Ambiental da Amazônia; BrasilAmerican Society of Plant Biologist2009-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/74995Saha, Sonali; Holbrook, Michell N; Montti, Lia Fernanda; Goldstein, Guillermo Hernan; Knust Cardinot, Gina; Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina; American Society of Plant Biologist; Plant Physiology; 149; 4; 4-2009; 1992-19991532-25480032-0889CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1104/pp.108.129015info:eu-repo/semantics/altIdentifier/url/http://www.plantphysiol.org/content/149/4/1992info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2663761/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:39:43Zoai:ri.conicet.gov.ar:11336/74995instacron: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 10:39:43.879CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina
title Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina
spellingShingle Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina
Saha, Sonali
Bamboo
Atlantic Forest
Hydraulic Conductivity
Root Pressure
title_short Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina
title_full Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina
title_fullStr Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina
title_full_unstemmed Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina
title_sort Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina
dc.creator.none.fl_str_mv Saha, Sonali
Holbrook, Michell N
Montti, Lia Fernanda
Goldstein, Guillermo Hernan
Knust Cardinot, Gina
author Saha, Sonali
author_facet Saha, Sonali
Holbrook, Michell N
Montti, Lia Fernanda
Goldstein, Guillermo Hernan
Knust Cardinot, Gina
author_role author
author2 Holbrook, Michell N
Montti, Lia Fernanda
Goldstein, Guillermo Hernan
Knust Cardinot, Gina
author2_role author
author
author
author
dc.subject.none.fl_str_mv Bamboo
Atlantic Forest
Hydraulic Conductivity
Root Pressure
topic Bamboo
Atlantic Forest
Hydraulic Conductivity
Root Pressure
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Bamboos are prominent components of many tropical ecosystems, yet little is known about the physiological mechanisms utilized by these gigantic forest grasses. Here, we present data on the water transport properties of Chusquea ramosissima and Merostachys claussenii, monocarpic bamboo grasses native to the subtropical Atlantic forests of Argentina. C. ramosissima and M. claussenii differed in their growth form and exhibited contrasting strategies of water transport. Maximum xylem hydraulic conductivity of C. ramosissima culms was 2-fold higher than that of M. claussenii. C. ramosissima cavitated at relatively high water potentials (50% loss of conductivity at ≥1 MPa), whereas M. claussenii was more drought tolerant (50% loss at ≤3 MPa). Both species exhibited significant loss of hydraulic conductivity during the day, which was reversed overnight due to the generation of root pressure. The photosynthetic capacities of both bamboo species, estimated based on electron transport rates, were moderate, reflecting both the large amount of leaf area supported by culms and diurnal loss of hydraulic conductivity due to cavitation. Leaf hydraulic conductance was also relatively low for both species, congruent with their modest photosynthetic capacities. Within its native range, C. ramosissima is highly invasive due to its ability to colonize and persist in both forest gaps and land cleared for agriculture. We propose that a highly vulnerable vasculature, coupled with diurnal root pressure and an allometry that allows substantial leaf area to be supported on relatively slender culms, are key traits contributing to the ecological success of C. ramosissima.
Fil: Saha, Sonali. Harvard University; Estados Unidos
Fil: Holbrook, Michell N. Harvard University; Estados Unidos
Fil: Montti, Lia Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina
Fil: Goldstein, Guillermo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina
Fil: Knust Cardinot, Gina. Instituto de Pesquisa Ambiental da Amazônia; Brasil
description Bamboos are prominent components of many tropical ecosystems, yet little is known about the physiological mechanisms utilized by these gigantic forest grasses. Here, we present data on the water transport properties of Chusquea ramosissima and Merostachys claussenii, monocarpic bamboo grasses native to the subtropical Atlantic forests of Argentina. C. ramosissima and M. claussenii differed in their growth form and exhibited contrasting strategies of water transport. Maximum xylem hydraulic conductivity of C. ramosissima culms was 2-fold higher than that of M. claussenii. C. ramosissima cavitated at relatively high water potentials (50% loss of conductivity at ≥1 MPa), whereas M. claussenii was more drought tolerant (50% loss at ≤3 MPa). Both species exhibited significant loss of hydraulic conductivity during the day, which was reversed overnight due to the generation of root pressure. The photosynthetic capacities of both bamboo species, estimated based on electron transport rates, were moderate, reflecting both the large amount of leaf area supported by culms and diurnal loss of hydraulic conductivity due to cavitation. Leaf hydraulic conductance was also relatively low for both species, congruent with their modest photosynthetic capacities. Within its native range, C. ramosissima is highly invasive due to its ability to colonize and persist in both forest gaps and land cleared for agriculture. We propose that a highly vulnerable vasculature, coupled with diurnal root pressure and an allometry that allows substantial leaf area to be supported on relatively slender culms, are key traits contributing to the ecological success of C. ramosissima.
publishDate 2009
dc.date.none.fl_str_mv 2009-04
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/11336/74995
Saha, Sonali; Holbrook, Michell N; Montti, Lia Fernanda; Goldstein, Guillermo Hernan; Knust Cardinot, Gina; Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina; American Society of Plant Biologist; Plant Physiology; 149; 4; 4-2009; 1992-1999
1532-2548
0032-0889
CONICET Digital
CONICET
url http://hdl.handle.net/11336/74995
identifier_str_mv Saha, Sonali; Holbrook, Michell N; Montti, Lia Fernanda; Goldstein, Guillermo Hernan; Knust Cardinot, Gina; Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina; American Society of Plant Biologist; Plant Physiology; 149; 4; 4-2009; 1992-1999
1532-2548
0032-0889
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1104/pp.108.129015
info:eu-repo/semantics/altIdentifier/url/http://www.plantphysiol.org/content/149/4/1992
info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2663761/
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
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application/pdf
dc.publisher.none.fl_str_mv American Society of Plant Biologist
publisher.none.fl_str_mv American Society of Plant Biologist
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instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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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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