Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina

Autores
Piñeiro, Maria Raquel; Giudice, Gabriela Elena; Morbelli, Marta Alicia
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The aim of this study is to analyse, describe and compare the spores of the two Adiantopsis species that grow in Argentina, A. chlorophylla (Sw.) Fée and A. radiata (L.) Fée. The study used herbarium material observed with light microscopy (LM), scanning electron microscopes (SEM) and transmission electron microscopes (TEM). The spores of both species are trilete with an echinate surface. The exospore is smooth, two-layered in section; both layers with different thickness and contrast. Depending on the plane of sectioning, channels are seen running through the exospore and in the apertural region. The perispore strongly contrasted when seen with TEM, is two-layered and bears ornamentation. The two layers have different thickness and structure. The inner layer P1 is the thickest layer and has three strata, which form the sculptural elements. The outer layer P2 covers all the surfaces of P1. Two levels of ornamentation are clearly distinguished: a basal level composed of fused ridges, and an upper level composed of echinae. The spores of A. chlorophylla are triangular-globose in polar view, with convex sides, 25 - 50 μm in equatorial diameter and have more ornamental processes per surface unit than the spores of A. radiata. The spores of A. radiata are triangular in polar view and 30 - 40 μm in equatorial diameter. Size and ornamentation help to establish differences at species level, and together with the exomorphological characteristics of the sporophyte, contribute to the systematics of this genus.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Adiantopsis
Argentina
Morphology
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:10915/83498

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spelling Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from ArgentinaPiñeiro, Maria RaquelGiudice, Gabriela ElenaMorbelli, Marta AliciaCiencias NaturalesAdiantopsisArgentinaMorphologySporesUltrastructureThe aim of this study is to analyse, describe and compare the spores of the two Adiantopsis species that grow in Argentina, A. chlorophylla (Sw.) Fée and A. radiata (L.) Fée. The study used herbarium material observed with light microscopy (LM), scanning electron microscopes (SEM) and transmission electron microscopes (TEM). The spores of both species are trilete with an echinate surface. The exospore is smooth, two-layered in section; both layers with different thickness and contrast. Depending on the plane of sectioning, channels are seen running through the exospore and in the apertural region. The perispore strongly contrasted when seen with TEM, is two-layered and bears ornamentation. The two layers have different thickness and structure. The inner layer P1 is the thickest layer and has three strata, which form the sculptural elements. The outer layer P2 covers all the surfaces of P1. Two levels of ornamentation are clearly distinguished: a basal level composed of fused ridges, and an upper level composed of echinae. The spores of A. chlorophylla are triangular-globose in polar view, with convex sides, 25 - 50 μm in equatorial diameter and have more ornamental processes per surface unit than the spores of A. radiata. The spores of A. radiata are triangular in polar view and 30 - 40 μm in equatorial diameter. Size and ornamentation help to establish differences at species level, and together with the exomorphological characteristics of the sporophyte, contribute to the systematics of this genus.Facultad de Ciencias Naturales y Museo2006-06-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf101-108http://sedici.unlp.edu.ar/handle/10915/83498enginfo:eu-repo/semantics/altIdentifier/issn/0017-3134info:eu-repo/semantics/altIdentifier/doi/10.1080/00173130600708644info: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:UNLP2025-09-29T11:15:45Zoai:sedici.unlp.edu.ar:10915/83498Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:46.082SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina
title Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina
spellingShingle Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina
Piñeiro, Maria Raquel
Ciencias Naturales
Adiantopsis
Argentina
Morphology
Spores
Ultrastructure
title_short Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina
title_full Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina
title_fullStr Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina
title_full_unstemmed Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina
title_sort Spore morphology and sporoderm ultrastructure in Adiantopsis Fée (Pteridaceae-Pteridophyta) from Argentina
dc.creator.none.fl_str_mv Piñeiro, Maria Raquel
Giudice, Gabriela Elena
Morbelli, Marta Alicia
author Piñeiro, Maria Raquel
author_facet Piñeiro, Maria Raquel
Giudice, Gabriela Elena
Morbelli, Marta Alicia
author_role author
author2 Giudice, Gabriela Elena
Morbelli, Marta Alicia
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Adiantopsis
Argentina
Morphology
Spores
Ultrastructure
topic Ciencias Naturales
Adiantopsis
Argentina
Morphology
Spores
Ultrastructure
dc.description.none.fl_txt_mv The aim of this study is to analyse, describe and compare the spores of the two Adiantopsis species that grow in Argentina, A. chlorophylla (Sw.) Fée and A. radiata (L.) Fée. The study used herbarium material observed with light microscopy (LM), scanning electron microscopes (SEM) and transmission electron microscopes (TEM). The spores of both species are trilete with an echinate surface. The exospore is smooth, two-layered in section; both layers with different thickness and contrast. Depending on the plane of sectioning, channels are seen running through the exospore and in the apertural region. The perispore strongly contrasted when seen with TEM, is two-layered and bears ornamentation. The two layers have different thickness and structure. The inner layer P1 is the thickest layer and has three strata, which form the sculptural elements. The outer layer P2 covers all the surfaces of P1. Two levels of ornamentation are clearly distinguished: a basal level composed of fused ridges, and an upper level composed of echinae. The spores of A. chlorophylla are triangular-globose in polar view, with convex sides, 25 - 50 μm in equatorial diameter and have more ornamental processes per surface unit than the spores of A. radiata. The spores of A. radiata are triangular in polar view and 30 - 40 μm in equatorial diameter. Size and ornamentation help to establish differences at species level, and together with the exomorphological characteristics of the sporophyte, contribute to the systematics of this genus.
Facultad de Ciencias Naturales y Museo
description The aim of this study is to analyse, describe and compare the spores of the two Adiantopsis species that grow in Argentina, A. chlorophylla (Sw.) Fée and A. radiata (L.) Fée. The study used herbarium material observed with light microscopy (LM), scanning electron microscopes (SEM) and transmission electron microscopes (TEM). The spores of both species are trilete with an echinate surface. The exospore is smooth, two-layered in section; both layers with different thickness and contrast. Depending on the plane of sectioning, channels are seen running through the exospore and in the apertural region. The perispore strongly contrasted when seen with TEM, is two-layered and bears ornamentation. The two layers have different thickness and structure. The inner layer P1 is the thickest layer and has three strata, which form the sculptural elements. The outer layer P2 covers all the surfaces of P1. Two levels of ornamentation are clearly distinguished: a basal level composed of fused ridges, and an upper level composed of echinae. The spores of A. chlorophylla are triangular-globose in polar view, with convex sides, 25 - 50 μm in equatorial diameter and have more ornamental processes per surface unit than the spores of A. radiata. The spores of A. radiata are triangular in polar view and 30 - 40 μm in equatorial diameter. Size and ornamentation help to establish differences at species level, and together with the exomorphological characteristics of the sporophyte, contribute to the systematics of this genus.
publishDate 2006
dc.date.none.fl_str_mv 2006-06-16
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/10915/83498
url http://sedici.unlp.edu.ar/handle/10915/83498
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/10.1080/00173130600708644
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
101-108
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instname:Universidad Nacional de La Plata
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