Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area

Autores
Faustino, Laura Inés; Bulfe, Nardia M. L.; Pinazo, Martín; Monteoliva, Silvia Estela; Graciano, Corina
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Plants of Pinus taeda L. from each of four families were fertilized with N, P or N+P at planting. The H family had the highest growth in dry mass while the L family had the lowest growth. Measurements of plant hydraulic architecture traits were performed during the first year after planting. Stomatal conductance (gs), water potential at predawn (Ψpredawn) and at midday (Ψmidday), branch hydraulic conductivity (ks and kl) and shoot hydraulic conductance (K) were measured. One year after planting, dry weight partitioning of all aboveground organs was performed. P fertilization increased growth in all four families, while N fertilization had a negative effect on growth. L family plants were more negatively affected than H family plants. This negative effect was not due to limitations in N or P uptake because plants from all the families and treatments had the same N and P concentration in the needles. P fertilization changed some hydraulic parameters, but those changes did not affect growth. However, the negative effect of N can be explained by changes in hydraulic traits. L family plants had a high leaf dry weight per branch, which was increased by N fertilization. This change occurred together with a decrease in shoot conductance. Therefore, the reduction in gs was not enough to avoid the drop in Ψmidday. Consequently, stomatal closure and the deficient water status of the needles resulted in a reduction in growth. In H family plants, the increase in number of needles per branch due to N fertilization was counteracted by a reduction in gs and also by a reduction in tracheid lumen size and length. Because of these two changes, Ψmidday did not drop and water availability in the needles was adequate for sustained growth. In conclusion, fertilization affects the hydraulic architecture of plants, and different families develop different strategies. Some of the hydraulic changes can explain the negative effect of N fertilization on growth.
Instituto de Fisiología Vegetal (INFIVE)
Materia
Ciencias Agrarias
nutrients
genetic variability
stomatal conductance
hydraulic conductivity
leaf water potential
xylem anatomy
Árboles
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/65722

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical areaFaustino, Laura InésBulfe, Nardia M. L.Pinazo, MartínMonteoliva, Silvia EstelaGraciano, CorinaCiencias Agrariasnutrientsgenetic variabilitystomatal conductancehydraulic conductivityleaf water potentialxylem anatomyÁrbolesPlants of Pinus taeda L. from each of four families were fertilized with N, P or N+P at planting. The H family had the highest growth in dry mass while the L family had the lowest growth. Measurements of plant hydraulic architecture traits were performed during the first year after planting. Stomatal conductance (gs), water potential at predawn (Ψpredawn) and at midday (Ψmidday), branch hydraulic conductivity (ks and kl) and shoot hydraulic conductance (K) were measured. One year after planting, dry weight partitioning of all aboveground organs was performed. P fertilization increased growth in all four families, while N fertilization had a negative effect on growth. L family plants were more negatively affected than H family plants. This negative effect was not due to limitations in N or P uptake because plants from all the families and treatments had the same N and P concentration in the needles. P fertilization changed some hydraulic parameters, but those changes did not affect growth. However, the negative effect of N can be explained by changes in hydraulic traits. L family plants had a high leaf dry weight per branch, which was increased by N fertilization. This change occurred together with a decrease in shoot conductance. Therefore, the reduction in gs was not enough to avoid the drop in Ψmidday. Consequently, stomatal closure and the deficient water status of the needles resulted in a reduction in growth. In H family plants, the increase in number of needles per branch due to N fertilization was counteracted by a reduction in gs and also by a reduction in tracheid lumen size and length. Because of these two changes, Ψmidday did not drop and water availability in the needles was adequate for sustained growth. In conclusion, fertilization affects the hydraulic architecture of plants, and different families develop different strategies. Some of the hydraulic changes can explain the negative effect of N fertilization on growth.Instituto de Fisiología Vegetal (INFIVE)2013-02-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf241-251http://sedici.unlp.edu.ar/handle/10915/65722enginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/treephys/article/33/3/241/1643651info:eu-repo/semantics/altIdentifier/issn/1758-4469info:eu-repo/semantics/altIdentifier/doi/10.1093/treephys/tps129info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:09:39Zoai:sedici.unlp.edu.ar:10915/65722Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:09:40.249SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area
title Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area
spellingShingle Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area
Faustino, Laura Inés
Ciencias Agrarias
nutrients
genetic variability
stomatal conductance
hydraulic conductivity
leaf water potential
xylem anatomy
Árboles
title_short Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area
title_full Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area
title_fullStr Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area
title_full_unstemmed Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area
title_sort Dry weight partitioning and hydraulic traits in young <i>Pinus taeda</i> trees fertilized with nitrogen and phosphorus in a subtropical area
dc.creator.none.fl_str_mv Faustino, Laura Inés
Bulfe, Nardia M. L.
Pinazo, Martín
Monteoliva, Silvia Estela
Graciano, Corina
author Faustino, Laura Inés
author_facet Faustino, Laura Inés
Bulfe, Nardia M. L.
Pinazo, Martín
Monteoliva, Silvia Estela
Graciano, Corina
author_role author
author2 Bulfe, Nardia M. L.
Pinazo, Martín
Monteoliva, Silvia Estela
Graciano, Corina
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Agrarias
nutrients
genetic variability
stomatal conductance
hydraulic conductivity
leaf water potential
xylem anatomy
Árboles
topic Ciencias Agrarias
nutrients
genetic variability
stomatal conductance
hydraulic conductivity
leaf water potential
xylem anatomy
Árboles
dc.description.none.fl_txt_mv Plants of Pinus taeda L. from each of four families were fertilized with N, P or N+P at planting. The H family had the highest growth in dry mass while the L family had the lowest growth. Measurements of plant hydraulic architecture traits were performed during the first year after planting. Stomatal conductance (gs), water potential at predawn (Ψpredawn) and at midday (Ψmidday), branch hydraulic conductivity (ks and kl) and shoot hydraulic conductance (K) were measured. One year after planting, dry weight partitioning of all aboveground organs was performed. P fertilization increased growth in all four families, while N fertilization had a negative effect on growth. L family plants were more negatively affected than H family plants. This negative effect was not due to limitations in N or P uptake because plants from all the families and treatments had the same N and P concentration in the needles. P fertilization changed some hydraulic parameters, but those changes did not affect growth. However, the negative effect of N can be explained by changes in hydraulic traits. L family plants had a high leaf dry weight per branch, which was increased by N fertilization. This change occurred together with a decrease in shoot conductance. Therefore, the reduction in gs was not enough to avoid the drop in Ψmidday. Consequently, stomatal closure and the deficient water status of the needles resulted in a reduction in growth. In H family plants, the increase in number of needles per branch due to N fertilization was counteracted by a reduction in gs and also by a reduction in tracheid lumen size and length. Because of these two changes, Ψmidday did not drop and water availability in the needles was adequate for sustained growth. In conclusion, fertilization affects the hydraulic architecture of plants, and different families develop different strategies. Some of the hydraulic changes can explain the negative effect of N fertilization on growth.
Instituto de Fisiología Vegetal (INFIVE)
description Plants of Pinus taeda L. from each of four families were fertilized with N, P or N+P at planting. The H family had the highest growth in dry mass while the L family had the lowest growth. Measurements of plant hydraulic architecture traits were performed during the first year after planting. Stomatal conductance (gs), water potential at predawn (Ψpredawn) and at midday (Ψmidday), branch hydraulic conductivity (ks and kl) and shoot hydraulic conductance (K) were measured. One year after planting, dry weight partitioning of all aboveground organs was performed. P fertilization increased growth in all four families, while N fertilization had a negative effect on growth. L family plants were more negatively affected than H family plants. This negative effect was not due to limitations in N or P uptake because plants from all the families and treatments had the same N and P concentration in the needles. P fertilization changed some hydraulic parameters, but those changes did not affect growth. However, the negative effect of N can be explained by changes in hydraulic traits. L family plants had a high leaf dry weight per branch, which was increased by N fertilization. This change occurred together with a decrease in shoot conductance. Therefore, the reduction in gs was not enough to avoid the drop in Ψmidday. Consequently, stomatal closure and the deficient water status of the needles resulted in a reduction in growth. In H family plants, the increase in number of needles per branch due to N fertilization was counteracted by a reduction in gs and also by a reduction in tracheid lumen size and length. Because of these two changes, Ψmidday did not drop and water availability in the needles was adequate for sustained growth. In conclusion, fertilization affects the hydraulic architecture of plants, and different families develop different strategies. Some of the hydraulic changes can explain the negative effect of N fertilization on growth.
publishDate 2013
dc.date.none.fl_str_mv 2013-02-25
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/65722
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dc.language.none.fl_str_mv eng
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info:eu-repo/semantics/altIdentifier/issn/1758-4469
info:eu-repo/semantics/altIdentifier/doi/10.1093/treephys/tps129
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
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