Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum

The spore morphology and wall ultrastructure of Microlepia speluncae and Pteridium arachnoideum from the Paranaense Province were analyzed with LM, SEM and TEM and a comparative analysis was carried out. In both species the spores are covered by a three-dimensional network of threads branched and fu...

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Autores principales: Yañez, Agustina, Márquez, Gonzalo Javier, Morbelli, Marta Alicia
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Naturales
Dennstaedtiaceae
Microlepia speluncae
Paranaense Province
Pteridium arachnoideum
Spores
Ultrastructure
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86098
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86098
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Dennstaedtiaceae
Microlepia speluncae
Paranaense Province
Pteridium arachnoideum
Spores
Ultrastructure
spellingShingle Ciencias Naturales
Dennstaedtiaceae
Microlepia speluncae
Paranaense Province
Pteridium arachnoideum
Spores
Ultrastructure
Yañez, Agustina
Márquez, Gonzalo Javier
Morbelli, Marta Alicia
Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum
topic_facet Ciencias Naturales
Dennstaedtiaceae
Microlepia speluncae
Paranaense Province
Pteridium arachnoideum
Spores
Ultrastructure
description The spore morphology and wall ultrastructure of Microlepia speluncae and Pteridium arachnoideum from the Paranaense Province were analyzed with LM, SEM and TEM and a comparative analysis was carried out. In both species the spores are covered by a three-dimensional network of threads branched and fused, tangentially arranged to the surface, and some free-end threads are also seen. The species were differentiated by morphology and the frequency of threads fusion and the networks distribution on the surface of the spores. In both species the exospore is two-layered in section, both layers are traversed by single or branched channels. The perispore is three-layered in section: the inner layer is adhered to the exospore, the middle layer is formed of a three-dimensional network of threads and the outer layer is discontinuous. The perispore ultrastructure of Microlepia speluncae was interpreted as formed of helical subunits displayed around a central channel. The spore morphology and perispore ultrastructure allow differentiating Microlepia from Pteridium but also to the other Dennstaedtiaceae genera that grow in the Paranaense Province. The results obtained allow establishing relationships that let us recognize different groups and gave a new reference to get a better knowledge of the family.
format Articulo
Articulo
author Yañez, Agustina
Márquez, Gonzalo Javier
Morbelli, Marta Alicia
author_facet Yañez, Agustina
Márquez, Gonzalo Javier
Morbelli, Marta Alicia
author_sort Yañez, Agustina
title Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum
title_short Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum
title_full Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum
title_fullStr Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum
title_full_unstemmed Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum
title_sort palynological analysis of dennstaedtiaceae taxa from the paranaense phytogeographic province that produce trilete spores ii: microlepia speluncae and pteridium arachnoideum
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86098
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