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

Autores
Saha, S.; Holbrook, N.M.; Montti, L.; Goldstein, G.; Cardinot, G.K.
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. © 2009 American Society of Plant Biologists.
Fil:Montti, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Goldstein, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
Plant Physiol. 2009;149(4):1992-1999
Materia
chlorophyll
water
Argentina
article
circadian rhythm
climate
drought
environmental protection
fluorescence
metabolism
physiology
plant root
plant stoma
Poaceae
pressure
xylem
Argentina
Chlorophyll
Circadian Rhythm
Climate
Conservation of Natural Resources
Droughts
Fluorescence
Plant Roots
Plant Stomata
Poaceae
Pressure
Water
Xylem
Bambusa
Chusquea ramosissima
Merostachys
Poaceae
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_00320889_v149_n4_p1992_Saha

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oai_identifier_str paperaa:paper_00320889_v149_n4_p1992_Saha
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, ArgentinaSaha, S.Holbrook, N.M.Montti, L.Goldstein, G.Cardinot, G.K.chlorophyllwaterArgentinaarticlecircadian rhythmclimatedroughtenvironmental protectionfluorescencemetabolismphysiologyplant rootplant stomaPoaceaepressurexylemArgentinaChlorophyllCircadian RhythmClimateConservation of Natural ResourcesDroughtsFluorescencePlant RootsPlant StomataPoaceaePressureWaterXylemBambusaChusquea ramosissimaMerostachysPoaceaeBamboos 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. © 2009 American Society of Plant Biologists.Fil:Montti, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Goldstein, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2009info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_00320889_v149_n4_p1992_SahaPlant Physiol. 2009;149(4):1992-1999reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-09-29T13:42:49Zpaperaa:paper_00320889_v149_n4_p1992_SahaInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-29 13:42:50.79Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
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, S.
chlorophyll
water
Argentina
article
circadian rhythm
climate
drought
environmental protection
fluorescence
metabolism
physiology
plant root
plant stoma
Poaceae
pressure
xylem
Argentina
Chlorophyll
Circadian Rhythm
Climate
Conservation of Natural Resources
Droughts
Fluorescence
Plant Roots
Plant Stomata
Poaceae
Pressure
Water
Xylem
Bambusa
Chusquea ramosissima
Merostachys
Poaceae
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, S.
Holbrook, N.M.
Montti, L.
Goldstein, G.
Cardinot, G.K.
author Saha, S.
author_facet Saha, S.
Holbrook, N.M.
Montti, L.
Goldstein, G.
Cardinot, G.K.
author_role author
author2 Holbrook, N.M.
Montti, L.
Goldstein, G.
Cardinot, G.K.
author2_role author
author
author
author
dc.subject.none.fl_str_mv chlorophyll
water
Argentina
article
circadian rhythm
climate
drought
environmental protection
fluorescence
metabolism
physiology
plant root
plant stoma
Poaceae
pressure
xylem
Argentina
Chlorophyll
Circadian Rhythm
Climate
Conservation of Natural Resources
Droughts
Fluorescence
Plant Roots
Plant Stomata
Poaceae
Pressure
Water
Xylem
Bambusa
Chusquea ramosissima
Merostachys
Poaceae
topic chlorophyll
water
Argentina
article
circadian rhythm
climate
drought
environmental protection
fluorescence
metabolism
physiology
plant root
plant stoma
Poaceae
pressure
xylem
Argentina
Chlorophyll
Circadian Rhythm
Climate
Conservation of Natural Resources
Droughts
Fluorescence
Plant Roots
Plant Stomata
Poaceae
Pressure
Water
Xylem
Bambusa
Chusquea ramosissima
Merostachys
Poaceae
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. © 2009 American Society of Plant Biologists.
Fil:Montti, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Goldstein, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
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. © 2009 American Society of Plant Biologists.
publishDate 2009
dc.date.none.fl_str_mv 2009
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/20.500.12110/paper_00320889_v149_n4_p1992_Saha
url http://hdl.handle.net/20.500.12110/paper_00320889_v149_n4_p1992_Saha
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Plant Physiol. 2009;149(4):1992-1999
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
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instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
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