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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/40363
Ver los metadatos del registro completo
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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 |
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http://sedici.unlp.edu.ar/handle/10915/40363 |
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http://sedici.unlp.edu.ar/handle/10915/40363 |
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http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ Creative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5) |
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