Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina

Autores
Peri, Pablo Luis; Martínez Pastur, Guillermo José; Lencinas, María Vanessa
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Net photosynthetic rate (A) and stomatal conductance (gs) of leaves of Nothofagus pumilio and N. antarctica seedlings were measured at different photosynthetic photon flux densities (PPFDs, 20, 150, 250, 500, 750, 1,000, 1,500 and 2,200 µmol/m2/s) and after 60 minutes of shade to determine the rate of photosynthetic induction after seedling transition from low to high PPFD. A and gs were also measured to evaluate the responses to water stress and the tolerance to waterlogging. N. pumilio had higher A values than N. antarctica for all light intensities measured with the maximum value of 16.8 µmol CO2/m2/s saturated at 1,000 µmol/m2/s PPFD. Values of gs for both Nothofagus species also declined as light intensity decreased. The times required for full induction of A were 18 and 27 minutes after the increase of PPFD (full sun) for N. pumilio and N. antarctica, respectively. There was a negative relationship between A and water stress, expressed as pre-dawn leaf water potential (ψlp), where the reduction in gs was the main factor that reduced A in both species. Tolerance to waterlogging was related with changes in A and gs where N. antarctica was more tolerant. These photosynthetic results of Nothofagus leaves to fluctuating light, water stress and waterlogging could be used to estimate the responses of regeneration to environmental conditions under the dynamics of natural stands, after silvicultural practices and for restoration plans.
EEA Santa Cruz
Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Santa Cruz; Argentina
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral (UNPA); Argentina
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina
Fil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro Austral de Investigaciones Científicas (CADIC); Argentina
Fil: Lencinas, María Vanessa. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro Austral de Investigaciones Científicas (CADIC); Argentina
Fuente
Journal of Forest Science 55(3): 101-111. (2009)
Materia
Nothofagus
Fotosíntesis
Sombra
Estrés por Sequía
Anegamiento
Régimenes de Luz
Conductancia Estomática
Nothofagus pumilio
Regeneración
Silvicultura
Photosynthesis
Shade
Drought Stress
Waterlogging
Light Regimes
Stomatal Conductance
Regeneration
Silviculture
Nothofagus antarctica
Ñire
Lenga
Región Patagónica
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/22919

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network_name_str INTA Digital (INTA)
spelling Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, ArgentinaPeri, Pablo LuisMartínez Pastur, Guillermo JoséLencinas, María VanessaNothofagusFotosíntesisSombraEstrés por SequíaAnegamientoRégimenes de LuzConductancia EstomáticaNothofagus pumilioRegeneraciónSilviculturaPhotosynthesisShadeDrought StressWaterloggingLight RegimesStomatal ConductanceRegenerationSilvicultureNothofagus antarcticaÑireLengaRegión PatagónicaNet photosynthetic rate (A) and stomatal conductance (gs) of leaves of Nothofagus pumilio and N. antarctica seedlings were measured at different photosynthetic photon flux densities (PPFDs, 20, 150, 250, 500, 750, 1,000, 1,500 and 2,200 µmol/m2/s) and after 60 minutes of shade to determine the rate of photosynthetic induction after seedling transition from low to high PPFD. A and gs were also measured to evaluate the responses to water stress and the tolerance to waterlogging. N. pumilio had higher A values than N. antarctica for all light intensities measured with the maximum value of 16.8 µmol CO2/m2/s saturated at 1,000 µmol/m2/s PPFD. Values of gs for both Nothofagus species also declined as light intensity decreased. The times required for full induction of A were 18 and 27 minutes after the increase of PPFD (full sun) for N. pumilio and N. antarctica, respectively. There was a negative relationship between A and water stress, expressed as pre-dawn leaf water potential (ψlp), where the reduction in gs was the main factor that reduced A in both species. Tolerance to waterlogging was related with changes in A and gs where N. antarctica was more tolerant. These photosynthetic results of Nothofagus leaves to fluctuating light, water stress and waterlogging could be used to estimate the responses of regeneration to environmental conditions under the dynamics of natural stands, after silvicultural practices and for restoration plans.EEA Santa CruzFil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Santa Cruz; ArgentinaFil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral (UNPA); ArgentinaFil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); ArgentinaFil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro Austral de Investigaciones Científicas (CADIC); ArgentinaFil: Lencinas, María Vanessa. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro Austral de Investigaciones Científicas (CADIC); ArgentinaCzech Academy of Agricultural Sciences2025-07-04T17:34:12Z2025-07-04T17:34:12Z2009-03-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/22919https://jfs.agriculturejournals.cz/artkey/jfs-200903-0001_photosynthetic-response-to-different-light-intensities-and-water-status-of-two-main-nothofagus-species-of-south.phpPeri P.L., Martínez Pastur G., Lencinas M.V. (2009) Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina. Journal of Forest Science 55(3): 101-111.1805-935X (electronic)1212-4834https://doi.org/10.17221/66/2008-JFSJournal of Forest Science 55(3): 101-111. (2009)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-10-16T09:32:23Zoai:localhost:20.500.12123/22919instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-16 09:32:23.466INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
title Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
spellingShingle Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
Peri, Pablo Luis
Nothofagus
Fotosíntesis
Sombra
Estrés por Sequía
Anegamiento
Régimenes de Luz
Conductancia Estomática
Nothofagus pumilio
Regeneración
Silvicultura
Photosynthesis
Shade
Drought Stress
Waterlogging
Light Regimes
Stomatal Conductance
Regeneration
Silviculture
Nothofagus antarctica
Ñire
Lenga
Región Patagónica
title_short Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
title_full Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
title_fullStr Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
title_full_unstemmed Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
title_sort Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
dc.creator.none.fl_str_mv Peri, Pablo Luis
Martínez Pastur, Guillermo José
Lencinas, María Vanessa
author Peri, Pablo Luis
author_facet Peri, Pablo Luis
Martínez Pastur, Guillermo José
Lencinas, María Vanessa
author_role author
author2 Martínez Pastur, Guillermo José
Lencinas, María Vanessa
author2_role author
author
dc.subject.none.fl_str_mv Nothofagus
Fotosíntesis
Sombra
Estrés por Sequía
Anegamiento
Régimenes de Luz
Conductancia Estomática
Nothofagus pumilio
Regeneración
Silvicultura
Photosynthesis
Shade
Drought Stress
Waterlogging
Light Regimes
Stomatal Conductance
Regeneration
Silviculture
Nothofagus antarctica
Ñire
Lenga
Región Patagónica
topic Nothofagus
Fotosíntesis
Sombra
Estrés por Sequía
Anegamiento
Régimenes de Luz
Conductancia Estomática
Nothofagus pumilio
Regeneración
Silvicultura
Photosynthesis
Shade
Drought Stress
Waterlogging
Light Regimes
Stomatal Conductance
Regeneration
Silviculture
Nothofagus antarctica
Ñire
Lenga
Región Patagónica
dc.description.none.fl_txt_mv Net photosynthetic rate (A) and stomatal conductance (gs) of leaves of Nothofagus pumilio and N. antarctica seedlings were measured at different photosynthetic photon flux densities (PPFDs, 20, 150, 250, 500, 750, 1,000, 1,500 and 2,200 µmol/m2/s) and after 60 minutes of shade to determine the rate of photosynthetic induction after seedling transition from low to high PPFD. A and gs were also measured to evaluate the responses to water stress and the tolerance to waterlogging. N. pumilio had higher A values than N. antarctica for all light intensities measured with the maximum value of 16.8 µmol CO2/m2/s saturated at 1,000 µmol/m2/s PPFD. Values of gs for both Nothofagus species also declined as light intensity decreased. The times required for full induction of A were 18 and 27 minutes after the increase of PPFD (full sun) for N. pumilio and N. antarctica, respectively. There was a negative relationship between A and water stress, expressed as pre-dawn leaf water potential (ψlp), where the reduction in gs was the main factor that reduced A in both species. Tolerance to waterlogging was related with changes in A and gs where N. antarctica was more tolerant. These photosynthetic results of Nothofagus leaves to fluctuating light, water stress and waterlogging could be used to estimate the responses of regeneration to environmental conditions under the dynamics of natural stands, after silvicultural practices and for restoration plans.
EEA Santa Cruz
Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Santa Cruz; Argentina
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral (UNPA); Argentina
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina
Fil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro Austral de Investigaciones Científicas (CADIC); Argentina
Fil: Lencinas, María Vanessa. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro Austral de Investigaciones Científicas (CADIC); Argentina
description Net photosynthetic rate (A) and stomatal conductance (gs) of leaves of Nothofagus pumilio and N. antarctica seedlings were measured at different photosynthetic photon flux densities (PPFDs, 20, 150, 250, 500, 750, 1,000, 1,500 and 2,200 µmol/m2/s) and after 60 minutes of shade to determine the rate of photosynthetic induction after seedling transition from low to high PPFD. A and gs were also measured to evaluate the responses to water stress and the tolerance to waterlogging. N. pumilio had higher A values than N. antarctica for all light intensities measured with the maximum value of 16.8 µmol CO2/m2/s saturated at 1,000 µmol/m2/s PPFD. Values of gs for both Nothofagus species also declined as light intensity decreased. The times required for full induction of A were 18 and 27 minutes after the increase of PPFD (full sun) for N. pumilio and N. antarctica, respectively. There was a negative relationship between A and water stress, expressed as pre-dawn leaf water potential (ψlp), where the reduction in gs was the main factor that reduced A in both species. Tolerance to waterlogging was related with changes in A and gs where N. antarctica was more tolerant. These photosynthetic results of Nothofagus leaves to fluctuating light, water stress and waterlogging could be used to estimate the responses of regeneration to environmental conditions under the dynamics of natural stands, after silvicultural practices and for restoration plans.
publishDate 2009
dc.date.none.fl_str_mv 2009-03-31
2025-07-04T17:34:12Z
2025-07-04T17:34:12Z
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/20.500.12123/22919
https://jfs.agriculturejournals.cz/artkey/jfs-200903-0001_photosynthetic-response-to-different-light-intensities-and-water-status-of-two-main-nothofagus-species-of-south.php
Peri P.L., Martínez Pastur G., Lencinas M.V. (2009) Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina. Journal of Forest Science 55(3): 101-111.
1805-935X (electronic)
1212-4834
https://doi.org/10.17221/66/2008-JFS
url http://hdl.handle.net/20.500.12123/22919
https://jfs.agriculturejournals.cz/artkey/jfs-200903-0001_photosynthetic-response-to-different-light-intensities-and-water-status-of-two-main-nothofagus-species-of-south.php
https://doi.org/10.17221/66/2008-JFS
identifier_str_mv Peri P.L., Martínez Pastur G., Lencinas M.V. (2009) Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina. Journal of Forest Science 55(3): 101-111.
1805-935X (electronic)
1212-4834
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-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Czech Academy of Agricultural Sciences
publisher.none.fl_str_mv Czech Academy of Agricultural Sciences
dc.source.none.fl_str_mv Journal of Forest Science 55(3): 101-111. (2009)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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