Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America
- Autores
- Macluf, Carmen Cecilia; Morbelli, Marta Alicia; Giudice, Gabriela Elena
- Año de publicación
- 2006
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Microspores of the 24 species of Isoetes that grow in southern South America were analyzed under a light microscope and scanning electron microscope. The microspores are monolete, elliptic in polar view, 30–40 µm long, and 20–25 µm wide. A background with various characteristics is seen on each surface. A supra-laesural expansion is present. The perispore is ornamented and has a perforated background. In section, it has a lacunose structure. The exospore is smooth, and it has a compact structure in section. The studied species could be divided into three groups by their perispore ornamentation: equinate, rugulate, and tuberculate. Microspore size was positively correlated with increasing ploidy level, and larger microspores were associated with terrestrial habitats. A convergence in ornamentation was found between spores produced by the studied species and those that grow in regions outside of the area under study.
Se analizaron con microscopio óptico y electrónico de barrido las microsporas de veinticuatro especies de Isoetes que crecen en Sud América Austral. Las microsporas son monoletes, elípticas en vista polar, de 30-40 p,m de longitud y 20-25 p,m de ancho. En superficie se observa una base con diversas características. Una expansión sobre la lesura está presente. El perisporio está ornamentado y tiene una base perforada. En sección, tiene una estructura lacunosa. El exosporio es liso y en sección tiene estructura compacta. Las especies estudiadas se pueden reunir en tres grupos de acuerdo a la ornamentación del perisporio, estos son: equinado, rugulado y tuberculado. Se ha observado que existe una correlación positiva entre el tamaño de las microsporas y el incremento en el nivel de ploidía y el hábitat. Se observó una convergencia en la ornamentación entre las esporas producidas por las especies estudiadas y las producidas por otras especies que crecen en regiones fuera del área de estudio.
Facultad de Ciencias Naturales y Museo - Materia
-
Botánica
Sud América
Isoetes
Microsporas
Morfología
Escultura - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/135356
Ver los metadatos del registro completo
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Microspore Morphology of Isoetes Species (Lycophyta) from Southern South AmericaMacluf, Carmen CeciliaMorbelli, Marta AliciaGiudice, Gabriela ElenaBotánicaSud AméricaIsoetesMicrosporasMorfologíaEsculturaMicrospores of the 24 species of Isoetes that grow in southern South America were analyzed under a light microscope and scanning electron microscope. The microspores are monolete, elliptic in polar view, 30–40 µm long, and 20–25 µm wide. A background with various characteristics is seen on each surface. A supra-laesural expansion is present. The perispore is ornamented and has a perforated background. In section, it has a lacunose structure. The exospore is smooth, and it has a compact structure in section. The studied species could be divided into three groups by their perispore ornamentation: equinate, rugulate, and tuberculate. Microspore size was positively correlated with increasing ploidy level, and larger microspores were associated with terrestrial habitats. A convergence in ornamentation was found between spores produced by the studied species and those that grow in regions outside of the area under study.Se analizaron con microscopio óptico y electrónico de barrido las microsporas de veinticuatro especies de Isoetes que crecen en Sud América Austral. Las microsporas son monoletes, elípticas en vista polar, de 30-40 p,m de longitud y 20-25 p,m de ancho. En superficie se observa una base con diversas características. Una expansión sobre la lesura está presente. El perisporio está ornamentado y tiene una base perforada. En sección, tiene una estructura lacunosa. El exosporio es liso y en sección tiene estructura compacta. Las especies estudiadas se pueden reunir en tres grupos de acuerdo a la ornamentación del perisporio, estos son: equinado, rugulado y tuberculado. Se ha observado que existe una correlación positiva entre el tamaño de las microsporas y el incremento en el nivel de ploidía y el hábitat. Se observó una convergencia en la ornamentación entre las esporas producidas por las especies estudiadas y las producidas por otras especies que crecen en regiones fuera del área de estudio.Facultad de Ciencias Naturales y Museo2006info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf121-134http://sedici.unlp.edu.ar/handle/10915/135356enginfo:eu-repo/semantics/altIdentifier/issn/0006-8101info: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:UNLP2025-10-22T17:13:26Zoai:sedici.unlp.edu.ar:10915/135356Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:13:26.39SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America |
| title |
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America |
| spellingShingle |
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America Macluf, Carmen Cecilia Botánica Sud América Isoetes Microsporas Morfología Escultura |
| title_short |
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America |
| title_full |
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America |
| title_fullStr |
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America |
| title_full_unstemmed |
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America |
| title_sort |
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America |
| dc.creator.none.fl_str_mv |
Macluf, Carmen Cecilia Morbelli, Marta Alicia Giudice, Gabriela Elena |
| author |
Macluf, Carmen Cecilia |
| author_facet |
Macluf, Carmen Cecilia 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 |
Botánica Sud América Isoetes Microsporas Morfología Escultura |
| topic |
Botánica Sud América Isoetes Microsporas Morfología Escultura |
| dc.description.none.fl_txt_mv |
Microspores of the 24 species of Isoetes that grow in southern South America were analyzed under a light microscope and scanning electron microscope. The microspores are monolete, elliptic in polar view, 30–40 µm long, and 20–25 µm wide. A background with various characteristics is seen on each surface. A supra-laesural expansion is present. The perispore is ornamented and has a perforated background. In section, it has a lacunose structure. The exospore is smooth, and it has a compact structure in section. The studied species could be divided into three groups by their perispore ornamentation: equinate, rugulate, and tuberculate. Microspore size was positively correlated with increasing ploidy level, and larger microspores were associated with terrestrial habitats. A convergence in ornamentation was found between spores produced by the studied species and those that grow in regions outside of the area under study. Se analizaron con microscopio óptico y electrónico de barrido las microsporas de veinticuatro especies de Isoetes que crecen en Sud América Austral. Las microsporas son monoletes, elípticas en vista polar, de 30-40 p,m de longitud y 20-25 p,m de ancho. En superficie se observa una base con diversas características. Una expansión sobre la lesura está presente. El perisporio está ornamentado y tiene una base perforada. En sección, tiene una estructura lacunosa. El exosporio es liso y en sección tiene estructura compacta. Las especies estudiadas se pueden reunir en tres grupos de acuerdo a la ornamentación del perisporio, estos son: equinado, rugulado y tuberculado. Se ha observado que existe una correlación positiva entre el tamaño de las microsporas y el incremento en el nivel de ploidía y el hábitat. Se observó una convergencia en la ornamentación entre las esporas producidas por las especies estudiadas y las producidas por otras especies que crecen en regiones fuera del área de estudio. Facultad de Ciencias Naturales y Museo |
| description |
Microspores of the 24 species of Isoetes that grow in southern South America were analyzed under a light microscope and scanning electron microscope. The microspores are monolete, elliptic in polar view, 30–40 µm long, and 20–25 µm wide. A background with various characteristics is seen on each surface. A supra-laesural expansion is present. The perispore is ornamented and has a perforated background. In section, it has a lacunose structure. The exospore is smooth, and it has a compact structure in section. The studied species could be divided into three groups by their perispore ornamentation: equinate, rugulate, and tuberculate. Microspore size was positively correlated with increasing ploidy level, and larger microspores were associated with terrestrial habitats. A convergence in ornamentation was found between spores produced by the studied species and those that grow in regions outside of the area under study. |
| publishDate |
2006 |
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2006 |
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eng |
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