Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas

Autores
Chen, Ya-Jun; Schnitzer, Stefan A.; Zhang, Yong Jiang; Fan, Ze Xin; Goldstein, Guillermo Hernan; Tomlinson, Kyle W.; Lin, Hua; Zhang, Jiao Lin; Cao, Kun Fang
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Tropical lianas deploy most of their leaves towards the top of the forest canopy, whereas trees exhibit a more stratified crown. Forest canopies are often exposed to hot and windy conditions, and how lianas cope with the extremely high transpirational demands under these environments remains unknown. We investigated stem hydraulic properties, leaf drought tolerance, diurnal changes in leaf and stem water potentials (Ψleaf and Ψstem), stomatal conductance (gs), photosynthetic rate, sap flow and stem native percentage loss of conductivity (PLC) for four liana species in a tropical forest in southwest China. Five co-occurring tree species were also selected for comparison. Lianas reached maximal transpiration at a relatively lower vapour pressure deficit (<1 kPa) than did co-occurring trees, suggesting vigorous photosynthesis during the morning. However, liana gs declined markedly over the day, with low gs at midday and afternoon. Lianas generally had higher stem sapwood-specific conductivity and maximum sap flux density but were less tolerant to drought-induced cavitation than were evergreen trees. Both lianas and trees lost leaf turgor in the top canopy at midday, but lianas lost leaf turgor earlier (∼2 h) than trees. Seven of eight species exhibited midday increases in PLC when xylem tensions were released to −0·3 to −0·5 MPa for PLC measurements. On average, lianas experienced high PLC (35·9%), along with a greater degree of disequilibrium between leaf and stem water potentials than trees (ΔΨstem–leaf: 1·37 MPa vs. 0·75 MPa) during the day. Earlier stomatal closure and efficient water transport may help lianas maintain higher Ψstem than trees despite having similar Ψleaf. Our results provide evidence that physiological regulation and efficient water transport mediate daily water relations in tropical lianas and may explain how lianas operate efficiently in tropical seasonal forests. Further studies involving a broader range of species are needed to confirm our findings.
Fil: Chen, Ya-Jun. Chinese Academy of Sciences; República de China. University of Chinese Academy of Sciences; República de China
Fil: Schnitzer, Stefan A.. Marquette University; Estados Unidos
Fil: Zhang, Yong Jiang. Chinese Academy of Sciences; República de China
Fil: Fan, Ze Xin. Chinese Academy of Sciences; República de China
Fil: Goldstein, Guillermo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Miami; Estados Unidos
Fil: Tomlinson, Kyle W.. Chinese Academy of Sciences; República de China
Fil: Lin, Hua. Chinese Academy of Sciences; República de China
Fil: Zhang, Jiao Lin. Chinese Academy of Sciences; República de China
Fil: Cao, Kun Fang. Chinese Academy of Sciences; República de China. Guangxi University; República de China
Materia
Drought Tolerance
Hydraulic Properties
Sap Flow
Stomatal Regulation
Water Relations
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/65013
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/65013
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianasChen, Ya-JunSchnitzer, Stefan A.Zhang, Yong JiangFan, Ze XinGoldstein, Guillermo HernanTomlinson, Kyle W.Lin, HuaZhang, Jiao LinCao, Kun FangDrought ToleranceHydraulic PropertiesSap FlowStomatal RegulationWater Relationshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Tropical lianas deploy most of their leaves towards the top of the forest canopy, whereas trees exhibit a more stratified crown. Forest canopies are often exposed to hot and windy conditions, and how lianas cope with the extremely high transpirational demands under these environments remains unknown. We investigated stem hydraulic properties, leaf drought tolerance, diurnal changes in leaf and stem water potentials (Ψleaf and Ψstem), stomatal conductance (gs), photosynthetic rate, sap flow and stem native percentage loss of conductivity (PLC) for four liana species in a tropical forest in southwest China. Five co-occurring tree species were also selected for comparison. Lianas reached maximal transpiration at a relatively lower vapour pressure deficit (<1 kPa) than did co-occurring trees, suggesting vigorous photosynthesis during the morning. However, liana gs declined markedly over the day, with low gs at midday and afternoon. Lianas generally had higher stem sapwood-specific conductivity and maximum sap flux density but were less tolerant to drought-induced cavitation than were evergreen trees. Both lianas and trees lost leaf turgor in the top canopy at midday, but lianas lost leaf turgor earlier (∼2 h) than trees. Seven of eight species exhibited midday increases in PLC when xylem tensions were released to −0·3 to −0·5 MPa for PLC measurements. On average, lianas experienced high PLC (35·9%), along with a greater degree of disequilibrium between leaf and stem water potentials than trees (ΔΨstem–leaf: 1·37 MPa vs. 0·75 MPa) during the day. Earlier stomatal closure and efficient water transport may help lianas maintain higher Ψstem than trees despite having similar Ψleaf. Our results provide evidence that physiological regulation and efficient water transport mediate daily water relations in tropical lianas and may explain how lianas operate efficiently in tropical seasonal forests. Further studies involving a broader range of species are needed to confirm our findings.Fil: Chen, Ya-Jun. Chinese Academy of Sciences; República de China. University of Chinese Academy of Sciences; República de ChinaFil: Schnitzer, Stefan A.. Marquette University; Estados UnidosFil: Zhang, Yong Jiang. Chinese Academy of Sciences; República de ChinaFil: Fan, Ze Xin. Chinese Academy of Sciences; República de ChinaFil: Goldstein, Guillermo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Miami; Estados UnidosFil: Tomlinson, Kyle W.. Chinese Academy of Sciences; República de ChinaFil: Lin, Hua. Chinese Academy of Sciences; República de ChinaFil: Zhang, Jiao Lin. Chinese Academy of Sciences; República de ChinaFil: Cao, Kun Fang. Chinese Academy of Sciences; República de China. Guangxi University; República de ChinaWiley Blackwell Publishing, Inc2017-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/65013Chen, Ya-Jun; Schnitzer, Stefan A.; Zhang, Yong Jiang; Fan, Ze Xin; Goldstein, Guillermo Hernan; et al.; Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas; Wiley Blackwell Publishing, Inc; Functional Ecology; 31; 2; 2-2017; 306-3170269-8463CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2435.12724info:eu-repo/semantics/altIdentifier/url/https://besjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1365-2435.12724info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T13:12:34Zoai:ri.conicet.gov.ar:11336/65013instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-12-23 13:12:35.054CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
title Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
spellingShingle Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
Chen, Ya-Jun
Drought Tolerance
Hydraulic Properties
Sap Flow
Stomatal Regulation
Water Relations
title_short Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
title_full Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
title_fullStr Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
title_full_unstemmed Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
title_sort Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
dc.creator.none.fl_str_mv Chen, Ya-Jun
Schnitzer, Stefan A.
Zhang, Yong Jiang
Fan, Ze Xin
Goldstein, Guillermo Hernan
Tomlinson, Kyle W.
Lin, Hua
Zhang, Jiao Lin
Cao, Kun Fang
author Chen, Ya-Jun
author_facet Chen, Ya-Jun
Schnitzer, Stefan A.
Zhang, Yong Jiang
Fan, Ze Xin
Goldstein, Guillermo Hernan
Tomlinson, Kyle W.
Lin, Hua
Zhang, Jiao Lin
Cao, Kun Fang
author_role author
author2 Schnitzer, Stefan A.
Zhang, Yong Jiang
Fan, Ze Xin
Goldstein, Guillermo Hernan
Tomlinson, Kyle W.
Lin, Hua
Zhang, Jiao Lin
Cao, Kun Fang
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Drought Tolerance
Hydraulic Properties
Sap Flow
Stomatal Regulation
Water Relations
topic Drought Tolerance
Hydraulic Properties
Sap Flow
Stomatal Regulation
Water Relations
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Tropical lianas deploy most of their leaves towards the top of the forest canopy, whereas trees exhibit a more stratified crown. Forest canopies are often exposed to hot and windy conditions, and how lianas cope with the extremely high transpirational demands under these environments remains unknown. We investigated stem hydraulic properties, leaf drought tolerance, diurnal changes in leaf and stem water potentials (Ψleaf and Ψstem), stomatal conductance (gs), photosynthetic rate, sap flow and stem native percentage loss of conductivity (PLC) for four liana species in a tropical forest in southwest China. Five co-occurring tree species were also selected for comparison. Lianas reached maximal transpiration at a relatively lower vapour pressure deficit (<1 kPa) than did co-occurring trees, suggesting vigorous photosynthesis during the morning. However, liana gs declined markedly over the day, with low gs at midday and afternoon. Lianas generally had higher stem sapwood-specific conductivity and maximum sap flux density but were less tolerant to drought-induced cavitation than were evergreen trees. Both lianas and trees lost leaf turgor in the top canopy at midday, but lianas lost leaf turgor earlier (∼2 h) than trees. Seven of eight species exhibited midday increases in PLC when xylem tensions were released to −0·3 to −0·5 MPa for PLC measurements. On average, lianas experienced high PLC (35·9%), along with a greater degree of disequilibrium between leaf and stem water potentials than trees (ΔΨstem–leaf: 1·37 MPa vs. 0·75 MPa) during the day. Earlier stomatal closure and efficient water transport may help lianas maintain higher Ψstem than trees despite having similar Ψleaf. Our results provide evidence that physiological regulation and efficient water transport mediate daily water relations in tropical lianas and may explain how lianas operate efficiently in tropical seasonal forests. Further studies involving a broader range of species are needed to confirm our findings.
Fil: Chen, Ya-Jun. Chinese Academy of Sciences; República de China. University of Chinese Academy of Sciences; República de China
Fil: Schnitzer, Stefan A.. Marquette University; Estados Unidos
Fil: Zhang, Yong Jiang. Chinese Academy of Sciences; República de China
Fil: Fan, Ze Xin. Chinese Academy of Sciences; República de China
Fil: Goldstein, Guillermo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Miami; Estados Unidos
Fil: Tomlinson, Kyle W.. Chinese Academy of Sciences; República de China
Fil: Lin, Hua. Chinese Academy of Sciences; República de China
Fil: Zhang, Jiao Lin. Chinese Academy of Sciences; República de China
Fil: Cao, Kun Fang. Chinese Academy of Sciences; República de China. Guangxi University; República de China
description Tropical lianas deploy most of their leaves towards the top of the forest canopy, whereas trees exhibit a more stratified crown. Forest canopies are often exposed to hot and windy conditions, and how lianas cope with the extremely high transpirational demands under these environments remains unknown. We investigated stem hydraulic properties, leaf drought tolerance, diurnal changes in leaf and stem water potentials (Ψleaf and Ψstem), stomatal conductance (gs), photosynthetic rate, sap flow and stem native percentage loss of conductivity (PLC) for four liana species in a tropical forest in southwest China. Five co-occurring tree species were also selected for comparison. Lianas reached maximal transpiration at a relatively lower vapour pressure deficit (<1 kPa) than did co-occurring trees, suggesting vigorous photosynthesis during the morning. However, liana gs declined markedly over the day, with low gs at midday and afternoon. Lianas generally had higher stem sapwood-specific conductivity and maximum sap flux density but were less tolerant to drought-induced cavitation than were evergreen trees. Both lianas and trees lost leaf turgor in the top canopy at midday, but lianas lost leaf turgor earlier (∼2 h) than trees. Seven of eight species exhibited midday increases in PLC when xylem tensions were released to −0·3 to −0·5 MPa for PLC measurements. On average, lianas experienced high PLC (35·9%), along with a greater degree of disequilibrium between leaf and stem water potentials than trees (ΔΨstem–leaf: 1·37 MPa vs. 0·75 MPa) during the day. Earlier stomatal closure and efficient water transport may help lianas maintain higher Ψstem than trees despite having similar Ψleaf. Our results provide evidence that physiological regulation and efficient water transport mediate daily water relations in tropical lianas and may explain how lianas operate efficiently in tropical seasonal forests. Further studies involving a broader range of species are needed to confirm our findings.
publishDate 2017
dc.date.none.fl_str_mv 2017-02
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/11336/65013
Chen, Ya-Jun; Schnitzer, Stefan A.; Zhang, Yong Jiang; Fan, Ze Xin; Goldstein, Guillermo Hernan; et al.; Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas; Wiley Blackwell Publishing, Inc; Functional Ecology; 31; 2; 2-2017; 306-317
0269-8463
CONICET Digital
CONICET
url http://hdl.handle.net/11336/65013
identifier_str_mv Chen, Ya-Jun; Schnitzer, Stefan A.; Zhang, Yong Jiang; Fan, Ze Xin; Goldstein, Guillermo Hernan; et al.; Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas; Wiley Blackwell Publishing, Inc; Functional Ecology; 31; 2; 2-2017; 306-317
0269-8463
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2435.12724
info:eu-repo/semantics/altIdentifier/url/https://besjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1365-2435.12724
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.441415

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