Structure and chemistry of the xylem of arborescent species of Blechnum from South America

Autores
Luna, María Luján; Ramos Giacosa, Juan Pablo; Giudice, Gabriela Elena; Fernández, Paula Virginia; Ciancia, Marina; Saparrat, Mario Carlos Nazareno
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The xylem in three arborescent species of Blechnum section Lomariocycas was studied in detail using SEM, TEM, FT-IR spectroscopy and sugar composition analysis. The overall structure of root and rhizome metaxylem tracheids was similar in the three species analyzed, and characterized by mostly scalariform pitting of these multifaceted cells. Pit membrane thickness and porosity varied according to the stage of tracheid maturation. Approximately rounded deposits resembling vestures were observed in the outer pit apertures of some tracheids. Under TEM, thickenings like one-sided tori appeared on the tracheid side of tracheid-to-parenchyma contact walls; some parenchyma cells showed, in addition, features of transfer cells. As the increase in stature creates new constraints in terms of biomechanical support and water transport in plants, the characteristics found in Blechnum xylem might be related to optimization of conductive efficiency and safety. Chemical analyses of roots and rhizomes of B. yungense revealed similar levels of G-type lignin deposited in the xylem cell walls. Such lignin is the most common in ferns, including other arborescent genera. Preliminary analysis of cell wall polysaccharide composition of both root and rhizome xylem, yielded cellulose, xyloglucans and xylans with low amounts of mannans and pectins. The xylem of rhizomes had higher amounts of cellulose than root xylem. Our results are discussed in the context of functional and evolutionary aspects of xylem ferns.
Facultad de Ciencias Naturales y Museo
Instituto de Fisiología Vegetal
Instituto de Botánica "Dr. Carlos Spegazzini"
Facultad de Ciencias Agrarias y Forestales
Materia
Ciencias Naturales
Arborescent ferns
tracheids
(pseudo)vestured pits
torus-like structures
transfer-cells
G-lignin
xyloglucans
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/134561
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/134561
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Structure and chemistry of the xylem of arborescent species of Blechnum from South AmericaLuna, María LujánRamos Giacosa, Juan PabloGiudice, Gabriela ElenaFernández, Paula VirginiaCiancia, MarinaSaparrat, Mario Carlos NazarenoCiencias NaturalesArborescent fernstracheids(pseudo)vestured pitstorus-like structurestransfer-cellsG-ligninxyloglucansThe xylem in three arborescent species of Blechnum section Lomariocycas was studied in detail using SEM, TEM, FT-IR spectroscopy and sugar composition analysis. The overall structure of root and rhizome metaxylem tracheids was similar in the three species analyzed, and characterized by mostly scalariform pitting of these multifaceted cells. Pit membrane thickness and porosity varied according to the stage of tracheid maturation. Approximately rounded deposits resembling vestures were observed in the outer pit apertures of some tracheids. Under TEM, thickenings like one-sided tori appeared on the tracheid side of tracheid-to-parenchyma contact walls; some parenchyma cells showed, in addition, features of transfer cells. As the increase in stature creates new constraints in terms of biomechanical support and water transport in plants, the characteristics found in Blechnum xylem might be related to optimization of conductive efficiency and safety. Chemical analyses of roots and rhizomes of B. yungense revealed similar levels of G-type lignin deposited in the xylem cell walls. Such lignin is the most common in ferns, including other arborescent genera. Preliminary analysis of cell wall polysaccharide composition of both root and rhizome xylem, yielded cellulose, xyloglucans and xylans with low amounts of mannans and pectins. The xylem of rhizomes had higher amounts of cellulose than root xylem. Our results are discussed in the context of functional and evolutionary aspects of xylem ferns.Facultad de Ciencias Naturales y MuseoInstituto de Fisiología VegetalInstituto de Botánica "Dr. Carlos Spegazzini"Facultad de Ciencias Agrarias y Forestales2015-03-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf3-21http://sedici.unlp.edu.ar/handle/10915/134561enginfo:eu-repo/semantics/altIdentifier/issn/0928-1541info:eu-repo/semantics/altIdentifier/issn/2294-1932info:eu-repo/semantics/altIdentifier/doi/10.1163/22941932-00000081info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:37Zoai:sedici.unlp.edu.ar:10915/134561Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:37.952SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Structure and chemistry of the xylem of arborescent species of Blechnum from South America
title Structure and chemistry of the xylem of arborescent species of Blechnum from South America
spellingShingle Structure and chemistry of the xylem of arborescent species of Blechnum from South America
Luna, María Luján
Ciencias Naturales
Arborescent ferns
tracheids
(pseudo)vestured pits
torus-like structures
transfer-cells
G-lignin
xyloglucans
title_short Structure and chemistry of the xylem of arborescent species of Blechnum from South America
title_full Structure and chemistry of the xylem of arborescent species of Blechnum from South America
title_fullStr Structure and chemistry of the xylem of arborescent species of Blechnum from South America
title_full_unstemmed Structure and chemistry of the xylem of arborescent species of Blechnum from South America
title_sort Structure and chemistry of the xylem of arborescent species of Blechnum from South America
dc.creator.none.fl_str_mv Luna, María Luján
Ramos Giacosa, Juan Pablo
Giudice, Gabriela Elena
Fernández, Paula Virginia
Ciancia, Marina
Saparrat, Mario Carlos Nazareno
author Luna, María Luján
author_facet Luna, María Luján
Ramos Giacosa, Juan Pablo
Giudice, Gabriela Elena
Fernández, Paula Virginia
Ciancia, Marina
Saparrat, Mario Carlos Nazareno
author_role author
author2 Ramos Giacosa, Juan Pablo
Giudice, Gabriela Elena
Fernández, Paula Virginia
Ciancia, Marina
Saparrat, Mario Carlos Nazareno
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Arborescent ferns
tracheids
(pseudo)vestured pits
torus-like structures
transfer-cells
G-lignin
xyloglucans
topic Ciencias Naturales
Arborescent ferns
tracheids
(pseudo)vestured pits
torus-like structures
transfer-cells
G-lignin
xyloglucans
dc.description.none.fl_txt_mv The xylem in three arborescent species of Blechnum section Lomariocycas was studied in detail using SEM, TEM, FT-IR spectroscopy and sugar composition analysis. The overall structure of root and rhizome metaxylem tracheids was similar in the three species analyzed, and characterized by mostly scalariform pitting of these multifaceted cells. Pit membrane thickness and porosity varied according to the stage of tracheid maturation. Approximately rounded deposits resembling vestures were observed in the outer pit apertures of some tracheids. Under TEM, thickenings like one-sided tori appeared on the tracheid side of tracheid-to-parenchyma contact walls; some parenchyma cells showed, in addition, features of transfer cells. As the increase in stature creates new constraints in terms of biomechanical support and water transport in plants, the characteristics found in Blechnum xylem might be related to optimization of conductive efficiency and safety. Chemical analyses of roots and rhizomes of B. yungense revealed similar levels of G-type lignin deposited in the xylem cell walls. Such lignin is the most common in ferns, including other arborescent genera. Preliminary analysis of cell wall polysaccharide composition of both root and rhizome xylem, yielded cellulose, xyloglucans and xylans with low amounts of mannans and pectins. The xylem of rhizomes had higher amounts of cellulose than root xylem. Our results are discussed in the context of functional and evolutionary aspects of xylem ferns.
Facultad de Ciencias Naturales y Museo
Instituto de Fisiología Vegetal
Instituto de Botánica "Dr. Carlos Spegazzini"
Facultad de Ciencias Agrarias y Forestales
description The xylem in three arborescent species of Blechnum section Lomariocycas was studied in detail using SEM, TEM, FT-IR spectroscopy and sugar composition analysis. The overall structure of root and rhizome metaxylem tracheids was similar in the three species analyzed, and characterized by mostly scalariform pitting of these multifaceted cells. Pit membrane thickness and porosity varied according to the stage of tracheid maturation. Approximately rounded deposits resembling vestures were observed in the outer pit apertures of some tracheids. Under TEM, thickenings like one-sided tori appeared on the tracheid side of tracheid-to-parenchyma contact walls; some parenchyma cells showed, in addition, features of transfer cells. As the increase in stature creates new constraints in terms of biomechanical support and water transport in plants, the characteristics found in Blechnum xylem might be related to optimization of conductive efficiency and safety. Chemical analyses of roots and rhizomes of B. yungense revealed similar levels of G-type lignin deposited in the xylem cell walls. Such lignin is the most common in ferns, including other arborescent genera. Preliminary analysis of cell wall polysaccharide composition of both root and rhizome xylem, yielded cellulose, xyloglucans and xylans with low amounts of mannans and pectins. The xylem of rhizomes had higher amounts of cellulose than root xylem. Our results are discussed in the context of functional and evolutionary aspects of xylem ferns.
publishDate 2015
dc.date.none.fl_str_mv 2015-03-18
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/134561
url http://sedici.unlp.edu.ar/handle/10915/134561
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0928-1541
info:eu-repo/semantics/altIdentifier/issn/2294-1932
info:eu-repo/semantics/altIdentifier/doi/10.1163/22941932-00000081
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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