Morphogenesis of the sexual phase of the epiphytic ferns Microgramma mortoniana and Pleopeltis macrocarpa (Polypodiaceae) Punta Lara Natural Reserve, Buenos Aires, Argentina

dc.creatorGorrer, Daniel Alejandro
dc.creatorBerrueta, Pedro Cayetano
dc.creatorRamos Giacosa, Juan Pablo
dc.creatorGiudice, G. E.
dc.creatorLuna, M. L.
dc.date.accessioned2019-10-18T13:13:45Z
dc.date.accessioned2022-10-15T10:04:30Z
dc.date.available2019-10-18T13:13:45Z
dc.date.available2022-10-15T10:04:30Z
dc.date.created2019-10-18T13:13:45Z
dc.date.issued2018-09
dc.identifierGorrer, Daniel Alejandro; Berrueta, Pedro Cayetano; Ramos Giacosa, Juan Pablo; Giudice, G. E.; Luna, M. L.; Morfogénesis de la fase sexual de los helechos epífitos Microgramma mortoniana y Pleopeltis macrocarpa (Polypodiaceae) de la Reserva Natural Punta Lara, Buenos Aires, Argentina; Revista de Biología Tropical; Revista de Biología Tropical; 66; 9-2018; 1078-1089
dc.identifier0034-7744
dc.identifierhttp://hdl.handle.net/11336/86290
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4373613
dc.description.abstractSexual morphogenesis phase of the epiphytic ferns Microgramma mortoniana and Pleopeltis macrocarpa (Polypodiaceae) from Punta Lara Natural Reserve, Buenos Aires, Argentina. The Punta LaraNatural Reserve is located on the riverside of the La Plata River in the province of Buenos Aires, Argentina. Itis the Southernmost relict in the world of subtropical riparian forest. The epiphytic ferns studied in this workbelong to the Polypodiaceae family: Microgramma mortoniana and Pleopeltis macrocarpa. Plant communitiesare subject to high levels of anthropization and introduction of exotic species. The goals of this work areto provide information on the morphogenesis of epiphytic gametophytes and to extend knowledge of their lifecycles, contributing to their conservation. Sowing was carried out in Dyer medium. In both species the sporesare monolete, ellipsoidal, yellowish and with verrucate sculpture. The equatorial diameter is 60-61 μm, the polardiameter is 39-42 μm. The germination is the Vittaria type; in M. mortoniana occurs at 20 days, while in P.macrocarpa occurs at six days. The filaments are uniseriate of 3-6 cells in length. The gametophyte development is Drynaria type. The cordated form is given after 40 days. In M. mortoniana, buds originated after 40 days. In P. macrocarpa, after 120 days, clathrate trichomes scale-like appear mainly on the margins of the gametophyte. The gametangia are typical of leptosporangiate ferns. The sporophyte of M. mortoniana emerged after 120 days and that of P. macrocarpa arose after 500 days, its blades are simple, spatulate and unicellular and multicellular branching hairs were observed. The germination pattern, gametophyte development, the presence of a lipid globule in the prothalic cell and the formation of unicellular capitated hairs are relevant characters that could be considered for systematic group. The delay in the formation of sporophytes through sexual reproduction, allows us to infer that the success of their establishment in situ would be given by the vegetative reproduction through creeping rhizomes and buds of gametophytes
dc.languagespa
dc.publisherRevista de Biología Tropical
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.15517/rbt.v66i3.31775
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://revistas.ucr.ac.cr/index.php/rbt/article/view/31775
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectDevelopment
dc.subjectEpyphytes
dc.subjectFerns
dc.subjectGametophyte
dc.subjectIn vitro culture
dc.subjectPropagation
dc.titleMorfogénesis de la fase sexual de los helechos epífitos Microgramma mortoniana y Pleopeltis macrocarpa (Polypodiaceae) de la Reserva Natural Punta Lara, Buenos Aires, Argentina
dc.titleMorphogenesis of the sexual phase of the epiphytic ferns Microgramma mortoniana and Pleopeltis macrocarpa (Polypodiaceae) Punta Lara Natural Reserve, Buenos Aires, Argentina
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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