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dc.contributor.author
Saha, Sonali  
dc.contributor.author
Holbrook, Michell N  
dc.contributor.author
Montti, Lia Fernanda  
dc.contributor.author
Goldstein, Guillermo Hernan  
dc.contributor.author
Knust Cardinot, Gina  
dc.date.available
2019-04-24T22:24:30Z  
dc.date.issued
2009-04  
dc.identifier.citation
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  
dc.identifier.issn
1532-2548  
dc.identifier.uri
http://hdl.handle.net/11336/74995  
dc.description.abstract
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.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Society of Plant Biologist  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Bamboo  
dc.subject
Atlantic Forest  
dc.subject
Hydraulic Conductivity  
dc.subject
Root Pressure  
dc.subject.classification
Otras Ciencias Biológicas  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Water relations of Chusquea ramosissima and Merostachys claussenii in Iguazu National Park, Argentina  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-04-11T19:51:05Z  
dc.identifier.eissn
0032-0889  
dc.journal.volume
149  
dc.journal.number
4  
dc.journal.pagination
1992-1999  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Rockville  
dc.description.fil
Fil: Saha, Sonali. Harvard University; Estados Unidos  
dc.description.fil
Fil: Holbrook, Michell N. Harvard University; Estados Unidos  
dc.description.fil
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  
dc.description.fil
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  
dc.description.fil
Fil: Knust Cardinot, Gina. Instituto de Pesquisa Ambiental da Amazônia; Brasil  
dc.journal.title
Plant Physiology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1104/pp.108.129015  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.plantphysiol.org/content/149/4/1992  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2663761/