Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance

Autores
Gandara, Jose; Nion, Matias; Ross, Silvia; González-Tálice, Jaime; Tabeira, Paolo; Fernandez, María Elena
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Climate extremes threaten the resilience of Eucalyptus plantations, yet hybridization with drought-tolerant species may enhance stress tolerance. This study analyzed xylem anatomical and functional drought responses in commercial Eucalyptus grandis (GG) clones and hybrids: E. grandis × camaldulensis (GC), E. grandis × tereticornis (GT), and E. grandis × urophylla (GU1, GU2). We evaluated vessel traits (water transport), fibers (mechanical support), and wood density (D) in stems and branches. Theoretical stem hydraulic conductivity (kStheo), vessel lumen fraction (F), vessel composition (S), and associations with previous hydraulic and growth data were assessed. While general drought responses occurred, GC had the most distinct xylem profile. This may explain it having the highest performance in different irrigation conditions. Red gum hybrids (GC, GT) maintained kStheo under drought, with stable F and a narrower vessel size, especially in branches. Conversely, GG and GU2 reduced F and S; and stem kStheo declined for a similar F in these clones, indicating vascular reconfiguration aligning the stem with the branch xylem. Almost all clones increased D under drought in any organ, with the highest increase in red gum hybrids. These results reveal diverse anatomical adjustments to drought among clones, partially explaining their growth responses.
EEA Balcarce
Fil: Gandara, Jose. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; Uruguay
Fil: Gandara, Jose. Universidad de La República. Facultad de Agronomía. Unidad de Posgrados y Educación Permanente; Uruguay
Fil: Nion, Matias. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; Uruguay
Fil: Ross, Silvia. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; Uruguay
Fil: González-Tálice, Jaime. Universidad de La República. Facultad de Agronomía. Departamento Forestal; Uruguay
Fil: Tabeira, Paolo. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; Uruguay
Fil: Fernández, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Fernández, María Elena. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fuente
Forests 16(8): 1267 (2025)
Materia
Xilema
Clon
Hibrido
Eucalyptus
Resistencia a la Sequía
Xylem
Clones
Hybrids
Drought Resistance
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:20.500.12123/25016
Acceder
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oai_identifier_str oai:localhost:20.500.12123/25016
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought ResistanceGandara, JoseNion, MatiasRoss, SilviaGonzález-Tálice, JaimeTabeira, PaoloFernandez, María ElenaXilemaClonHibridoEucalyptusResistencia a la SequíaXylemClonesHybridsDrought ResistanceClimate extremes threaten the resilience of Eucalyptus plantations, yet hybridization with drought-tolerant species may enhance stress tolerance. This study analyzed xylem anatomical and functional drought responses in commercial Eucalyptus grandis (GG) clones and hybrids: E. grandis × camaldulensis (GC), E. grandis × tereticornis (GT), and E. grandis × urophylla (GU1, GU2). We evaluated vessel traits (water transport), fibers (mechanical support), and wood density (D) in stems and branches. Theoretical stem hydraulic conductivity (kStheo), vessel lumen fraction (F), vessel composition (S), and associations with previous hydraulic and growth data were assessed. While general drought responses occurred, GC had the most distinct xylem profile. This may explain it having the highest performance in different irrigation conditions. Red gum hybrids (GC, GT) maintained kStheo under drought, with stable F and a narrower vessel size, especially in branches. Conversely, GG and GU2 reduced F and S; and stem kStheo declined for a similar F in these clones, indicating vascular reconfiguration aligning the stem with the branch xylem. Almost all clones increased D under drought in any organ, with the highest increase in red gum hybrids. These results reveal diverse anatomical adjustments to drought among clones, partially explaining their growth responses.EEA BalcarceFil: Gandara, Jose. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; UruguayFil: Gandara, Jose. Universidad de La República. Facultad de Agronomía. Unidad de Posgrados y Educación Permanente; UruguayFil: Nion, Matias. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; UruguayFil: Ross, Silvia. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; UruguayFil: González-Tálice, Jaime. Universidad de La República. Facultad de Agronomía. Departamento Forestal; UruguayFil: Tabeira, Paolo. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; UruguayFil: Fernández, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Fernández, María Elena. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaMDPI2026-01-21T16:06:08Z2026-01-21T16:06:08Z2025-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/250161999-4907https://doi.org/10.3390/f16081267Forests 16(8): 1267 (2025)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)2026-02-26T11:47:41Zoai:localhost:20.500.12123/25016instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-02-26 11:47:41.505INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance
title Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance
spellingShingle Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance
Gandara, Jose
Xilema
Clon
Hibrido
Eucalyptus
Resistencia a la Sequía
Xylem
Clones
Hybrids
Drought Resistance
title_short Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance
title_full Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance
title_fullStr Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance
title_full_unstemmed Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance
title_sort Xylem Functional Anatomy of Pure-Species and Interspecific Hybrid Clones of Eucalyptus Differing in Drought Resistance
dc.creator.none.fl_str_mv Gandara, Jose
Nion, Matias
Ross, Silvia
González-Tálice, Jaime
Tabeira, Paolo
Fernandez, María Elena
author Gandara, Jose
author_facet Gandara, Jose
Nion, Matias
Ross, Silvia
González-Tálice, Jaime
Tabeira, Paolo
Fernandez, María Elena
author_role author
author2 Nion, Matias
Ross, Silvia
González-Tálice, Jaime
Tabeira, Paolo
Fernandez, María Elena
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Xilema
Clon
Hibrido
Eucalyptus
Resistencia a la Sequía
Xylem
Clones
Hybrids
Drought Resistance
topic Xilema
Clon
Hibrido
Eucalyptus
Resistencia a la Sequía
Xylem
Clones
Hybrids
Drought Resistance
dc.description.none.fl_txt_mv Climate extremes threaten the resilience of Eucalyptus plantations, yet hybridization with drought-tolerant species may enhance stress tolerance. This study analyzed xylem anatomical and functional drought responses in commercial Eucalyptus grandis (GG) clones and hybrids: E. grandis × camaldulensis (GC), E. grandis × tereticornis (GT), and E. grandis × urophylla (GU1, GU2). We evaluated vessel traits (water transport), fibers (mechanical support), and wood density (D) in stems and branches. Theoretical stem hydraulic conductivity (kStheo), vessel lumen fraction (F), vessel composition (S), and associations with previous hydraulic and growth data were assessed. While general drought responses occurred, GC had the most distinct xylem profile. This may explain it having the highest performance in different irrigation conditions. Red gum hybrids (GC, GT) maintained kStheo under drought, with stable F and a narrower vessel size, especially in branches. Conversely, GG and GU2 reduced F and S; and stem kStheo declined for a similar F in these clones, indicating vascular reconfiguration aligning the stem with the branch xylem. Almost all clones increased D under drought in any organ, with the highest increase in red gum hybrids. These results reveal diverse anatomical adjustments to drought among clones, partially explaining their growth responses.
EEA Balcarce
Fil: Gandara, Jose. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; Uruguay
Fil: Gandara, Jose. Universidad de La República. Facultad de Agronomía. Unidad de Posgrados y Educación Permanente; Uruguay
Fil: Nion, Matias. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; Uruguay
Fil: Ross, Silvia. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; Uruguay
Fil: González-Tálice, Jaime. Universidad de La República. Facultad de Agronomía. Departamento Forestal; Uruguay
Fil: Tabeira, Paolo. Universidad de La República. Facultad de Agronomía. Departamento de Biología Vegetal; Uruguay
Fil: Fernández, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Fernández, María Elena. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
description Climate extremes threaten the resilience of Eucalyptus plantations, yet hybridization with drought-tolerant species may enhance stress tolerance. This study analyzed xylem anatomical and functional drought responses in commercial Eucalyptus grandis (GG) clones and hybrids: E. grandis × camaldulensis (GC), E. grandis × tereticornis (GT), and E. grandis × urophylla (GU1, GU2). We evaluated vessel traits (water transport), fibers (mechanical support), and wood density (D) in stems and branches. Theoretical stem hydraulic conductivity (kStheo), vessel lumen fraction (F), vessel composition (S), and associations with previous hydraulic and growth data were assessed. While general drought responses occurred, GC had the most distinct xylem profile. This may explain it having the highest performance in different irrigation conditions. Red gum hybrids (GC, GT) maintained kStheo under drought, with stable F and a narrower vessel size, especially in branches. Conversely, GG and GU2 reduced F and S; and stem kStheo declined for a similar F in these clones, indicating vascular reconfiguration aligning the stem with the branch xylem. Almost all clones increased D under drought in any organ, with the highest increase in red gum hybrids. These results reveal diverse anatomical adjustments to drought among clones, partially explaining their growth responses.
publishDate 2025
dc.date.none.fl_str_mv 2025-08
2026-01-21T16:06:08Z
2026-01-21T16:06:08Z
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/20.500.12123/25016
1999-4907
https://doi.org/10.3390/f16081267
url http://hdl.handle.net/20.500.12123/25016
https://doi.org/10.3390/f16081267
identifier_str_mv 1999-4907
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 MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Forests 16(8): 1267 (2025)
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
_version_ 1858207933388554240
score 13.176822

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