Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)

Autores
Passarelli, Lilian Mónica; Gabriel y Galán, José Maria; Prada, Carmen; Rolleri, Cristina Hilda
Año de publicación
2010
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A study of the spores of 64 neotropical and palaeotropical taxa of the genus Blechnum was performed using scanning electron microscopy (SEM). Two basic types of perispores were recognised: perispore smooth or only slightly ornamented (laevigate, with micro-granules or micro-lamellae, venulose and rugulate), and perispore ornamented (rugate, low reticulate, cristatereticulate, orbiculate, and colliculate). SEM observations allow for distinguishing differences in the structure of perispores, but the character does not correlate with the ornamentation. The smooth exospore predominates among the studied species. Results suggest that perispore characters have important diagnostic value, since different combinations of ornamentation/ structure were found among the studied species. Moreover, when spore characters are considered together with other morphological traits of the sporophytes and the habit of plants, ornamentation of spores becomes a useful complementary feature at the specific level. The results are discussed in light of the recent systematic studies and emphasise that any eventual subdivision of the genus Blechnum must include characters of the sporophyte as well as spore features to ensure a more robust classification than the previously proposed. The spores also show a significant affinity between Blechnum and other genera of Blechnaceae, which was also suggested by recent phylogenetic studies.
Laboratorio de Estudios de Anatomía Vegetal Evolutiva y Sistemática
Materia
Ciencias Naturales
Botánica
perispore ornamentation
rugate
foliose
rugulate
laevigate
micro-ornamentation
perispore structure
Plantas
Esporas
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/40363

id SEDICI_4ebda038f1af2d95f66843ab84856dbc
oai_identifier_str oai:sedici.unlp.edu.ar:10915/40363
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)Passarelli, Lilian MónicaGabriel y Galán, José MariaPrada, CarmenRolleri, Cristina HildaCiencias NaturalesBotánicaperispore ornamentationrugatefolioserugulatelaevigatemicro-ornamentationperispore structurePlantasEsporasA study of the spores of 64 neotropical and palaeotropical taxa of the genus Blechnum was performed using scanning electron microscopy (SEM). Two basic types of perispores were recognised: perispore smooth or only slightly ornamented (laevigate, with micro-granules or micro-lamellae, venulose and rugulate), and perispore ornamented (rugate, low reticulate, cristatereticulate, orbiculate, and colliculate). SEM observations allow for distinguishing differences in the structure of perispores, but the character does not correlate with the ornamentation. The smooth exospore predominates among the studied species. Results suggest that perispore characters have important diagnostic value, since different combinations of ornamentation/ structure were found among the studied species. Moreover, when spore characters are considered together with other morphological traits of the sporophytes and the habit of plants, ornamentation of spores becomes a useful complementary feature at the specific level. The results are discussed in light of the recent systematic studies and emphasise that any eventual subdivision of the genus Blechnum must include characters of the sporophyte as well as spore features to ensure a more robust classification than the previously proposed. The spores also show a significant affinity between Blechnum and other genera of Blechnaceae, which was also suggested by recent phylogenetic studies.Laboratorio de Estudios de Anatomía Vegetal Evolutiva y Sistemática2010-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-20http://sedici.unlp.edu.ar/handle/10915/40363spainfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/00173134.2010.524245#tabModuleinfo:eu-repo/semantics/altIdentifier/issn/1651-2049info:eu-repo/semantics/altIdentifier/doi/10.1080/00173134.2010.524245info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/2.5/ar/Creative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:00:39Zoai:sedici.unlp.edu.ar:10915/40363Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:00:39.93SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)
title Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)
spellingShingle Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)
Passarelli, Lilian Mónica
Ciencias Naturales
Botánica
perispore ornamentation
rugate
foliose
rugulate
laevigate
micro-ornamentation
perispore structure
Plantas
Esporas
title_short Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)
title_full Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)
title_fullStr Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)
title_full_unstemmed Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)
title_sort Spore morphology and ornamentation in the genus <i>Blechnum</i> (Blechnaceae)
dc.creator.none.fl_str_mv Passarelli, Lilian Mónica
Gabriel y Galán, José Maria
Prada, Carmen
Rolleri, Cristina Hilda
author Passarelli, Lilian Mónica
author_facet Passarelli, Lilian Mónica
Gabriel y Galán, José Maria
Prada, Carmen
Rolleri, Cristina Hilda
author_role author
author2 Gabriel y Galán, José Maria
Prada, Carmen
Rolleri, Cristina Hilda
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Botánica
perispore ornamentation
rugate
foliose
rugulate
laevigate
micro-ornamentation
perispore structure
Plantas
Esporas
topic Ciencias Naturales
Botánica
perispore ornamentation
rugate
foliose
rugulate
laevigate
micro-ornamentation
perispore structure
Plantas
Esporas
dc.description.none.fl_txt_mv A study of the spores of 64 neotropical and palaeotropical taxa of the genus Blechnum was performed using scanning electron microscopy (SEM). Two basic types of perispores were recognised: perispore smooth or only slightly ornamented (laevigate, with micro-granules or micro-lamellae, venulose and rugulate), and perispore ornamented (rugate, low reticulate, cristatereticulate, orbiculate, and colliculate). SEM observations allow for distinguishing differences in the structure of perispores, but the character does not correlate with the ornamentation. The smooth exospore predominates among the studied species. Results suggest that perispore characters have important diagnostic value, since different combinations of ornamentation/ structure were found among the studied species. Moreover, when spore characters are considered together with other morphological traits of the sporophytes and the habit of plants, ornamentation of spores becomes a useful complementary feature at the specific level. The results are discussed in light of the recent systematic studies and emphasise that any eventual subdivision of the genus Blechnum must include characters of the sporophyte as well as spore features to ensure a more robust classification than the previously proposed. The spores also show a significant affinity between Blechnum and other genera of Blechnaceae, which was also suggested by recent phylogenetic studies.
Laboratorio de Estudios de Anatomía Vegetal Evolutiva y Sistemática
description A study of the spores of 64 neotropical and palaeotropical taxa of the genus Blechnum was performed using scanning electron microscopy (SEM). Two basic types of perispores were recognised: perispore smooth or only slightly ornamented (laevigate, with micro-granules or micro-lamellae, venulose and rugulate), and perispore ornamented (rugate, low reticulate, cristatereticulate, orbiculate, and colliculate). SEM observations allow for distinguishing differences in the structure of perispores, but the character does not correlate with the ornamentation. The smooth exospore predominates among the studied species. Results suggest that perispore characters have important diagnostic value, since different combinations of ornamentation/ structure were found among the studied species. Moreover, when spore characters are considered together with other morphological traits of the sporophytes and the habit of plants, ornamentation of spores becomes a useful complementary feature at the specific level. The results are discussed in light of the recent systematic studies and emphasise that any eventual subdivision of the genus Blechnum must include characters of the sporophyte as well as spore features to ensure a more robust classification than the previously proposed. The spores also show a significant affinity between Blechnum and other genera of Blechnaceae, which was also suggested by recent phylogenetic studies.
publishDate 2010
dc.date.none.fl_str_mv 2010-11
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/10915/40363
url http://sedici.unlp.edu.ar/handle/10915/40363
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/00173134.2010.524245#tabModule
info:eu-repo/semantics/altIdentifier/issn/1651-2049
info:eu-repo/semantics/altIdentifier/doi/10.1080/00173134.2010.524245
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Creative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Creative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5)
dc.format.none.fl_str_mv application/pdf
1-20
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
_version_ 1844615872237273088
score 13.070432