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
- 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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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 http://creativecommons.org/licenses/by/2.5/ar |
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) |
collection |
Biblioteca Digital (UBA-FCEN) |
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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