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
- Institución
- Universidad Nacional del Nordeste
- OAI Identificador
- oai:repositorio.unne.edu.ar:123456789/47989
Ver los metadatos del registro completo
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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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1842344229528928256 |
score |
12.623145 |