Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America

Autores
Márquez, Gonzalo Javier; Morbelli, Marta Alicia; Giudice, Gabriela Elena
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Spore sculpture and wall structure of eight Cyathea (Cyatheaceae) species from southern South America were studied using light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. Two layers, i.e. an inner and an outer layer, were observed in the perispore. The inner layer has two strata: the inner stratum is attached to the exospore and composed of rodlets tangentially oriented to the spore surface and randomly intermixed; the outer stratum consists of a three-dimensional network of rodlets with either free or fused distal edges forming spinules. The outer layer is thin, darkly contrasted and covers the rodlets. In most cases, the exospore has two layers and a pitted surface. In Cyathea atrovirens, the exospore surface is smooth, while in C. delgadii and C. myriotricha it is verrucate. The homogeneity of perispore features within the genus Cyathea is evident, while exospore features are heterogeneous. The exospore has different kinds of surface-structures that are of potential interest for assessing evolutionary trends within the group.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Cyathea
Cyatheaceae
Morphology
Southern South America
Spores
Ultrastructure
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/82509
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/82509
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South AmericaMárquez, Gonzalo JavierMorbelli, Marta AliciaGiudice, Gabriela ElenaCiencias NaturalesCyatheaCyatheaceaeMorphologySouthern South AmericaSporesUltrastructureSpore sculpture and wall structure of eight Cyathea (Cyatheaceae) species from southern South America were studied using light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. Two layers, i.e. an inner and an outer layer, were observed in the perispore. The inner layer has two strata: the inner stratum is attached to the exospore and composed of rodlets tangentially oriented to the spore surface and randomly intermixed; the outer stratum consists of a three-dimensional network of rodlets with either free or fused distal edges forming spinules. The outer layer is thin, darkly contrasted and covers the rodlets. In most cases, the exospore has two layers and a pitted surface. In Cyathea atrovirens, the exospore surface is smooth, while in C. delgadii and C. myriotricha it is verrucate. The homogeneity of perispore features within the genus Cyathea is evident, while exospore features are heterogeneous. The exospore has different kinds of surface-structures that are of potential interest for assessing evolutionary trends within the group.Facultad de Ciencias Naturales y Museo2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf269-280http://sedici.unlp.edu.ar/handle/10915/82509enginfo:eu-repo/semantics/altIdentifier/issn/0017-3134info:eu-repo/semantics/altIdentifier/doi/10.1080/00173134.2010.517270info: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)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:27Zoai:sedici.unlp.edu.ar:10915/82509Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:27.415SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
title Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
spellingShingle Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
Márquez, Gonzalo Javier
Ciencias Naturales
Cyathea
Cyatheaceae
Morphology
Southern South America
Spores
Ultrastructure
title_short Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
title_full Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
title_fullStr Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
title_full_unstemmed Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
title_sort Spore morphology and ultrastructure of Cyathea (Cyatheaceae, Pteridophyta) species from southern South America
dc.creator.none.fl_str_mv Márquez, Gonzalo Javier
Morbelli, Marta Alicia
Giudice, Gabriela Elena
author Márquez, Gonzalo Javier
author_facet Márquez, Gonzalo Javier
Morbelli, Marta Alicia
Giudice, Gabriela Elena
author_role author
author2 Morbelli, Marta Alicia
Giudice, Gabriela Elena
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Cyathea
Cyatheaceae
Morphology
Southern South America
Spores
Ultrastructure
topic Ciencias Naturales
Cyathea
Cyatheaceae
Morphology
Southern South America
Spores
Ultrastructure
dc.description.none.fl_txt_mv Spore sculpture and wall structure of eight Cyathea (Cyatheaceae) species from southern South America were studied using light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. Two layers, i.e. an inner and an outer layer, were observed in the perispore. The inner layer has two strata: the inner stratum is attached to the exospore and composed of rodlets tangentially oriented to the spore surface and randomly intermixed; the outer stratum consists of a three-dimensional network of rodlets with either free or fused distal edges forming spinules. The outer layer is thin, darkly contrasted and covers the rodlets. In most cases, the exospore has two layers and a pitted surface. In Cyathea atrovirens, the exospore surface is smooth, while in C. delgadii and C. myriotricha it is verrucate. The homogeneity of perispore features within the genus Cyathea is evident, while exospore features are heterogeneous. The exospore has different kinds of surface-structures that are of potential interest for assessing evolutionary trends within the group.
Facultad de Ciencias Naturales y Museo
description Spore sculpture and wall structure of eight Cyathea (Cyatheaceae) species from southern South America were studied using light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. Two layers, i.e. an inner and an outer layer, were observed in the perispore. The inner layer has two strata: the inner stratum is attached to the exospore and composed of rodlets tangentially oriented to the spore surface and randomly intermixed; the outer stratum consists of a three-dimensional network of rodlets with either free or fused distal edges forming spinules. The outer layer is thin, darkly contrasted and covers the rodlets. In most cases, the exospore has two layers and a pitted surface. In Cyathea atrovirens, the exospore surface is smooth, while in C. delgadii and C. myriotricha it is verrucate. The homogeneity of perispore features within the genus Cyathea is evident, while exospore features are heterogeneous. The exospore has different kinds of surface-structures that are of potential interest for assessing evolutionary trends within the group.
publishDate 2010
dc.date.none.fl_str_mv 2010
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/10915/82509
url http://sedici.unlp.edu.ar/handle/10915/82509
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0017-3134
info:eu-repo/semantics/altIdentifier/doi/10.1080/00173134.2010.517270
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
269-280
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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