Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae)
Digital
- Autores:
-
Rincon-Baron, Edgar Javier
Guerra-Sierra, Beatriz Elena
Restrepo Zuluaga, David Esteban
Espinosa-Matías, Silvia
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2019
- Institución:
- Universidad de Santander
- Repositorio:
- Repositorio Universidad de Santander
- Idioma:
- eng
spa
- OAI Identifier:
- oai:repositorio.udes.edu.co:001/6730
- Acceso en línea:
- https://repositorio.udes.edu.co/handle/001/6730
- Palabra clave:
- Epiphytic fern
Ontogeny
Polypodiaceae
Scales
Sori
Sporangia
Ultrastructure
- Rights
- openAccess
- License
- ©, The Authors 2019
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Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae) |
| dc.title.alternative.spa.fl_str_mv |
Ontogeny and histochemistry of sporangia and receptacle scales of the epiphytic fern pleopeltis Macrocarpa (Polypodiaceae) |
| title |
Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae) |
| spellingShingle |
Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae) Epiphytic fern Ontogeny Polypodiaceae Scales Sori Sporangia Ultrastructure |
| title_short |
Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae) |
| title_full |
Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae) |
| title_fullStr |
Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae) |
| title_full_unstemmed |
Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae) |
| title_sort |
Ontogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae) |
| dc.creator.fl_str_mv |
Rincon-Baron, Edgar Javier Guerra-Sierra, Beatriz Elena Restrepo Zuluaga, David Esteban Espinosa-Matías, Silvia |
| dc.contributor.author.none.fl_str_mv |
Rincon-Baron, Edgar Javier Guerra-Sierra, Beatriz Elena Restrepo Zuluaga, David Esteban Espinosa-Matías, Silvia |
| dc.contributor.researchgroup.spa.fl_str_mv |
Microbiota |
| dc.subject.proposal.eng.fl_str_mv |
Epiphytic fern Ontogeny Polypodiaceae Scales Sori Sporangia Ultrastructure |
| topic |
Epiphytic fern Ontogeny Polypodiaceae Scales Sori Sporangia Ultrastructure |
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Digital |
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2019 |
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2019-12-05 |
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2022-05-09T15:08:04Z |
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2022-05-09T15:08:04Z |
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Artículo de revista |
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10.15517/RBT.V67I6.36984 |
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0034-7744 |
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https://repositorio.udes.edu.co/handle/001/6730 |
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eng spa |
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Barón, E. J., Guerra Sierra, B., Restrepo Zuluaga, D., & Espinosa Matías, S. (2019). Ontogenia y aspectos histoquímicos de los esporangios y escamas receptáculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae). Revista De Biología Tropical, 67(6), 1292-1312. https://doi.org/10.15517/rbt.v67i6.36984 |
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Scopus |
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Revista de Biología Tropical |
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©, The Authors 2019 |
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Atribución-NoComercial 4.0 Internacional (CC BY-NC 4.0) |
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https://creativecommons.org/licenses/by-nc/4.0/ |
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©, The Authors 2019 Atribución-NoComercial 4.0 Internacional (CC BY-NC 4.0) https://creativecommons.org/licenses/by-nc/4.0/ http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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21 p |
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application/pdf |
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Costa Rica |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/36984/40130 |
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Universidad de Santander |
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Rincon-Baron, Edgar Javier6b203434-61ef-4fbb-bac7-072a3786a7ab-1Guerra-Sierra, Beatriz Elena1a727d5d-4115-499e-b4be-338994275bce-1Restrepo Zuluaga, David Esteban154d2a75-c1b2-4581-b68a-fed57eed8393-1Espinosa-Matías, Silviaa19c1d43-8dc8-4273-bd4b-b4f96ccf2d1e-1Microbiota2022-05-09T15:08:04Z2022-05-09T15:08:04Z2019-12-05DigitalOntogeny and histochemistry of sporangia and receptacle scales of the epiphytic fern Pleopeltis macrocarpa (Polypodiaceae).Introduction: The ontogeny of sporangia and furthermore the struc-ture and function of the receptacle scales showed by the sori of some fern species are topics scarcely represented in the scientific literature. Objectives: To describe and analyze the ontogeny of sporangia and receptacle scales of Pleopeltis macrocarpa. Methods: During March and April of 2017, fertile fronds of P. macrocarpa were col-lected from tree stems located in the plant nursery “El Edén de las flores”, municipality of Rionegro, Antioquia, Colombia. The samples were fixed and processed according to the standard protocols for embedding and sec-tioning in paraffin and resin. Sections obtained in resin (0.5 μm) were stained with Toluidine blue. The additional descriptions of the anatomy and histochemistry required specific reagents, applied for the determination of pri-mary walls, secondary walls, nuclei, lignin, polyphenols, polysaccharides, pectic substances and cellulose. The observations and photographic records were performed by photonic and epifluorescence microscopy. For the scanning electron microscopy (SEM) technique, the sori were dehydrated with 2,2- Dimethoxypropane, dried to critical point and coated with gold. Results: The sori are superficial, vascularized and have mixed development, covered by receptacle scales that detach as the sporangia reaches maturity. The leptosporangiate type sporan-gium have long stalks of primary walls, the annulus of the sporangia shows secondary walls with “U” shaped thickenings rich in lignin. The epidermal cells of the receptacle originate the sporangia and receptacle scales. The mitotic division events of these two structures are initially similar, but then diverge for the reproductive and vegetative differentiation of these two organs. Meiosis is simultaneous and the spore tetrads are arranged in a decussate or tetragonal shape. The cellular tapetum is initially unstratified but becomes bistratified by mitotic division. The inner layer of the tapetum cells break originating a plasmodial tapetum. During the sporoderm development, the first structure formed is the exospore, composed of sporopolenin, followed by the endospore composed of cellulose, pectin and carboxilated polysaccharides, and finally the perispore. The histochemistry and epifluorescence results indicate that both the sporangia and immature receptacle scales have cell walls of cellulosic. These structures as well as those of the sporangium wall cells maintain its composition during matu-ration. Whereas, the epidermal wall cells of the shields from the mature receptacle scales are characterized by thickened cuticle. The polyphenols are present during all the development stages of the sporangia and receptacle scales. Starch is abundant in the early stages of development of the receptacle cells and sporangial primordia. Conclusions: The ontogeny of the sporangia of P. macrocarpa is similar to the described for leptosporangiate ferns. The receptacle scales are mainly protective structures, its morphology and cell wall composition prevent desiccation or humidity loss of the sporangia during the labile stages of development. These results agree with the protective function attributed to the peltated pluricellular scales present in the vegetative structures of drought tolerant species of ferns and angiosperms.Biotecnología Agroambiente y Salud21 papplication/pdf10.15517/RBT.V67I6.369840034-7744https://repositorio.udes.edu.co/handle/001/6730engspaCosta Rica13126129267Barón, E. J., Guerra Sierra, B., Restrepo Zuluaga, D., & Espinosa Matías, S. (2019). Ontogenia y aspectos histoquímicos de los esporangios y escamas receptáculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae). Revista De Biología Tropical, 67(6), 1292-1312. https://doi.org/10.15517/rbt.v67i6.36984ScopusRevista de Biología Tropical©, The Authors 2019info:eu-repo/semantics/openAccessAtribución-NoComercial 4.0 Internacional (CC BY-NC 4.0)https://creativecommons.org/licenses/by-nc/4.0/http://purl.org/coar/access_right/c_abf2https://revistas.ucr.ac.cr/index.php/rbt/article/view/36984/40130Epiphytic fernOntogenyPolypodiaceaeScalesSoriSporangiaUltrastructureOntogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae)Ontogeny and histochemistry of sporangia and receptacle scales of the epiphytic fern pleopeltis Macrocarpa (Polypodiaceae)Artículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85Todas las AudienciasPublicationORIGINALOntogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae).pdfOntogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae).pdfapplication/pdf236403https://repositorio.udes.edu.co/bitstreams/0fedde0f-f598-4731-83cd-0b793cb9532a/downloadcd2e3a2882327eca5e4e3ee8396cceaaMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-859https://repositorio.udes.edu.co/bitstreams/61c4dfb0-956c-4fcf-9811-65bfa070a351/download38d94cf55aa1bf2dac1a736ac45c881cMD52TEXTOntogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae).pdf.txtOntogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae).pdf.txtExtracted texttext/plain5https://repositorio.udes.edu.co/bitstreams/c573fc15-c9c4-4c23-b260-be25571e0eb3/download5dbe86c1111d64f45ba435df98fdc825MD53THUMBNAILOntogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae).pdf.jpgOntogenia e histoquímica de los esporangios y escamas receptaculares del helecho epífito Pleopeltis macrocarpa (Polypodiaceae).pdf.jpgGenerated Thumbnailimage/jpeg12191https://repositorio.udes.edu.co/bitstreams/d1f9832b-6e9b-4185-9624-89b24a0c1096/downloadcaf1d30d70e379ed9ccd5b64bbac45cdMD54001/6730oai:repositorio.udes.edu.co:001/67302023-10-11 10:56:27.697https://creativecommons.org/licenses/by-nc/4.0/©, The Authors 2019https://repositorio.udes.edu.coRepositorio Universidad de Santandersoporte@metabiblioteca.comTGljZW5jaWEgZGUgUHVibGljYWNpw7NuIFVERVMKRGlyZWN0cmljZXMgZGUgVVNPIHkgQUNDRVNPCgo= |