Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation

Autores
Sato, Héctor Arnaldo; González, Ana María
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Sato, Héctor Arnaldo. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; Argentina.
Fil: Sato, Héctor Arnaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecorregiones Andinas; Argentina.
Fil: González, Ana María. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: González, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.
Studies on the development of the endosperm, embryo and fruit are scarce in Balanophoraceae, since a particular pattern for the family has not been established. Moreover, discrepancies between the reported cases are being observed by various authors. The aims in this study are to describe the processes of endospermogenesis, embryogenesis and fruit development for the Argentine Lophophytum species. Pistillate flowers and fruits at different stages of development were analysed using conventional optical and scanning electronic microscopy. Endospermogenesis without fertilization takes place in three stages: firstly, the formation of a coenocyte of 2–12 nuclei which originate from polar nuclei. The second stage is the fusion of the endosperm nuclei, plus both nuclear and cytoplasmic material from cells of nucella. Once inside the coenocytes, fusion of all the nuclei results in a single giant nucleus reaching dimensions of 120 × 60 m. The third stage is the endosperm formation sequence with rounds of coordinated mitosis, giving rise to nuclei of equal dimensions; the simultaneous cytokinesis gives rise to the early endosperm cells. The zygote, influenced by the endosperm, undergoes three or four rounds of mitotic division, resulting in a mass of very small cells. The mature seed is formed only of endosperm and undifferentiated embryo. The mature embryo is undifferentiated, globular, consisting of between 24 and 32 cells and it completely lacks any radicle, cotyledons or stem. The mature ovary becomes a tiny achene in both species. We proposed the existence of parthenogenesis for the Argentine species of Lophophytum, which is justified by the formation of the endosperm without any fertilization, which is the start of the development of the autonomous endosperm. The zygote begins its division due to the influence of the endosperm.
Fuente
Flora, 2017, vol. 233, p. 79-89.
Materia
Balanophoraceae
Embryo
Endosperm
Fruit
Holoparasite
Lophophytum
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
Institución
Universidad Nacional del Nordeste
OAI Identificador
oai:repositorio.unne.edu.ar:123456789/47989

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network_name_str Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
spelling Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiationSato, Héctor ArnaldoGonzález, Ana MaríaBalanophoraceaeEmbryoEndospermFruitHoloparasiteLophophytumFil: Sato, Héctor Arnaldo. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; Argentina.Fil: Sato, Héctor Arnaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecorregiones Andinas; Argentina.Fil: González, Ana María. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: González, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.Studies on the development of the endosperm, embryo and fruit are scarce in Balanophoraceae, since a particular pattern for the family has not been established. Moreover, discrepancies between the reported cases are being observed by various authors. The aims in this study are to describe the processes of endospermogenesis, embryogenesis and fruit development for the Argentine Lophophytum species. Pistillate flowers and fruits at different stages of development were analysed using conventional optical and scanning electronic microscopy. Endospermogenesis without fertilization takes place in three stages: firstly, the formation of a coenocyte of 2–12 nuclei which originate from polar nuclei. The second stage is the fusion of the endosperm nuclei, plus both nuclear and cytoplasmic material from cells of nucella. Once inside the coenocytes, fusion of all the nuclei results in a single giant nucleus reaching dimensions of 120 × 60 m. The third stage is the endosperm formation sequence with rounds of coordinated mitosis, giving rise to nuclei of equal dimensions; the simultaneous cytokinesis gives rise to the early endosperm cells. The zygote, influenced by the endosperm, undergoes three or four rounds of mitotic division, resulting in a mass of very small cells. The mature seed is formed only of endosperm and undifferentiated embryo. The mature embryo is undifferentiated, globular, consisting of between 24 and 32 cells and it completely lacks any radicle, cotyledons or stem. The mature ovary becomes a tiny achene in both species. We proposed the existence of parthenogenesis for the Argentine species of Lophophytum, which is justified by the formation of the endosperm without any fertilization, which is the start of the development of the autonomous endosperm. The zygote begins its division due to the influence of the endosperm.Elsevier2017-05-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfSato, Héctor Arnaldo y González, Ana María, 2017. Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation. Flora. Ámsterdam: Elsevier, vol. 233, p. 79-89. ISSN 0367-2530.0367-2530http://repositorio.unne.edu.ar/handle/123456789/47989Flora, 2017, vol. 233, p. 79-89.reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)instname:Universidad Nacional del Nordesteenghttps://www.sciencedirect.com/science/article/abs/pii/S0367253017332103info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/2.5/ar/Atribución-NoComercial-SinDerivadas 2.5 Argentina2025-09-04T11:14:36Zoai:repositorio.unne.edu.ar:123456789/47989instacron:UNNEInstitucionalhttp://repositorio.unne.edu.ar/Universidad públicaNo correspondehttp://repositorio.unne.edu.ar/oaiososa@bib.unne.edu.ar;sergio.alegria@unne.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:48712025-09-04 11:14:36.516Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordestefalse
dc.title.none.fl_str_mv Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
title Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
spellingShingle Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
Sato, Héctor Arnaldo
Balanophoraceae
Embryo
Endosperm
Fruit
Holoparasite
Lophophytum
title_short Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
title_full Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
title_fullStr Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
title_full_unstemmed Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
title_sort Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
dc.creator.none.fl_str_mv Sato, Héctor Arnaldo
González, Ana María
author Sato, Héctor Arnaldo
author_facet Sato, Héctor Arnaldo
González, Ana María
author_role author
author2 González, Ana María
author2_role author
dc.subject.none.fl_str_mv Balanophoraceae
Embryo
Endosperm
Fruit
Holoparasite
Lophophytum
topic Balanophoraceae
Embryo
Endosperm
Fruit
Holoparasite
Lophophytum
dc.description.none.fl_txt_mv Fil: Sato, Héctor Arnaldo. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; Argentina.
Fil: Sato, Héctor Arnaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecorregiones Andinas; Argentina.
Fil: González, Ana María. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: González, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.
Studies on the development of the endosperm, embryo and fruit are scarce in Balanophoraceae, since a particular pattern for the family has not been established. Moreover, discrepancies between the reported cases are being observed by various authors. The aims in this study are to describe the processes of endospermogenesis, embryogenesis and fruit development for the Argentine Lophophytum species. Pistillate flowers and fruits at different stages of development were analysed using conventional optical and scanning electronic microscopy. Endospermogenesis without fertilization takes place in three stages: firstly, the formation of a coenocyte of 2–12 nuclei which originate from polar nuclei. The second stage is the fusion of the endosperm nuclei, plus both nuclear and cytoplasmic material from cells of nucella. Once inside the coenocytes, fusion of all the nuclei results in a single giant nucleus reaching dimensions of 120 × 60 m. The third stage is the endosperm formation sequence with rounds of coordinated mitosis, giving rise to nuclei of equal dimensions; the simultaneous cytokinesis gives rise to the early endosperm cells. The zygote, influenced by the endosperm, undergoes three or four rounds of mitotic division, resulting in a mass of very small cells. The mature seed is formed only of endosperm and undifferentiated embryo. The mature embryo is undifferentiated, globular, consisting of between 24 and 32 cells and it completely lacks any radicle, cotyledons or stem. The mature ovary becomes a tiny achene in both species. We proposed the existence of parthenogenesis for the Argentine species of Lophophytum, which is justified by the formation of the endosperm without any fertilization, which is the start of the development of the autonomous endosperm. The zygote begins its division due to the influence of the endosperm.
description Fil: Sato, Héctor Arnaldo. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; Argentina.
publishDate 2017
dc.date.none.fl_str_mv 2017-05-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Sato, Héctor Arnaldo y González, Ana María, 2017. Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation. Flora. Ámsterdam: Elsevier, vol. 233, p. 79-89. ISSN 0367-2530.
0367-2530
http://repositorio.unne.edu.ar/handle/123456789/47989
identifier_str_mv Sato, Héctor Arnaldo y González, Ana María, 2017. Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation. Flora. Ámsterdam: Elsevier, vol. 233, p. 79-89. ISSN 0367-2530.
0367-2530
url http://repositorio.unne.edu.ar/handle/123456789/47989
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.sciencedirect.com/science/article/abs/pii/S0367253017332103
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Atribución-NoComercial-SinDerivadas 2.5 Argentina
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Atribución-NoComercial-SinDerivadas 2.5 Argentina
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Flora, 2017, vol. 233, p. 79-89.
reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
instname:Universidad Nacional del Nordeste
reponame_str Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
collection Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
instname_str Universidad Nacional del Nordeste
repository.name.fl_str_mv Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordeste
repository.mail.fl_str_mv ososa@bib.unne.edu.ar;sergio.alegria@unne.edu.ar
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