Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina

Autores
Venier, Maria Paula; Funes, Guillermo; Carrizo Garcia, Carolina
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Physical dormancy (impermeability of seed coats to water) is related to histological features of the seed coat. This mechanism has ecological importance since it determines the time and space of germination. The aim of the present study was to compare the histology and impermeability of the seed coat in five Neotropical Acacia species from xerophytic forests of central Argentina: Acacia aroma, A. caven, A. atramentaria, A. gilliesii and A. praecox. An imbibition experiment was performed to determine the presence or absence of physical dormancy. Seed coat structure was studied through histochemical analysis. The seeds of A. gilliesii and A. praecox were treated with ammonium ferrous sulfate to identify the sites of water entry. Acacia aroma, A. caven and A. atramentaria exhibited physical dormancy; the seed coat was very thick and compact, with a wide, sclerified parenchyma and a “water gap” for water uptake. Seed coat impermeability in these species was mainly attributed to characteristics of the lignified epidermis. By contrast, A. gilliesii and A. praecox did not have physical dormancy and showed thin seed coats with a much narrower sclerified parenchyma. Water entered the seeds of A. gilliesii and A. praecox not only through the hilar zone but also through the entire surface of the seed coat. Differences in the seed coat structure among species could be related to different regenerative responses to environmental conditions that would facilitate the coexistence of these Acacia species in the xerophytic forests of Córdoba, Argentina.
Fil: Venier, Maria Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Funes, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Carrizo Garcia, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Materia
Acacia
Germination
Palisade-like cells
Seed coat
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/273021
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/273021
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central ArgentinaVenier, Maria PaulaFunes, GuillermoCarrizo Garcia, CarolinaAcaciaGerminationPalisade-like cellsSeed coathttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Physical dormancy (impermeability of seed coats to water) is related to histological features of the seed coat. This mechanism has ecological importance since it determines the time and space of germination. The aim of the present study was to compare the histology and impermeability of the seed coat in five Neotropical Acacia species from xerophytic forests of central Argentina: Acacia aroma, A. caven, A. atramentaria, A. gilliesii and A. praecox. An imbibition experiment was performed to determine the presence or absence of physical dormancy. Seed coat structure was studied through histochemical analysis. The seeds of A. gilliesii and A. praecox were treated with ammonium ferrous sulfate to identify the sites of water entry. Acacia aroma, A. caven and A. atramentaria exhibited physical dormancy; the seed coat was very thick and compact, with a wide, sclerified parenchyma and a “water gap” for water uptake. Seed coat impermeability in these species was mainly attributed to characteristics of the lignified epidermis. By contrast, A. gilliesii and A. praecox did not have physical dormancy and showed thin seed coats with a much narrower sclerified parenchyma. Water entered the seeds of A. gilliesii and A. praecox not only through the hilar zone but also through the entire surface of the seed coat. Differences in the seed coat structure among species could be related to different regenerative responses to environmental conditions that would facilitate the coexistence of these Acacia species in the xerophytic forests of Córdoba, Argentina.Fil: Venier, Maria Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Funes, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Carrizo Garcia, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaElsevier Gmbh2012-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/273021Venier, Maria Paula; Funes, Guillermo; Carrizo Garcia, Carolina; Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina; Elsevier Gmbh; Flora; 207; 1; 1-2012; 39-460367-2530CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/sciencedirect.com/science/article/pii/S036725301100154Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.flora.2011.07.017info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:31:38Zoai:ri.conicet.gov.ar:11336/273021instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:31:39.106CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina
title Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina
spellingShingle Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina
Venier, Maria Paula
Acacia
Germination
Palisade-like cells
Seed coat
title_short Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina
title_full Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina
title_fullStr Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina
title_full_unstemmed Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina
title_sort Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina
dc.creator.none.fl_str_mv Venier, Maria Paula
Funes, Guillermo
Carrizo Garcia, Carolina
author Venier, Maria Paula
author_facet Venier, Maria Paula
Funes, Guillermo
Carrizo Garcia, Carolina
author_role author
author2 Funes, Guillermo
Carrizo Garcia, Carolina
author2_role author
author
dc.subject.none.fl_str_mv Acacia
Germination
Palisade-like cells
Seed coat
topic Acacia
Germination
Palisade-like cells
Seed coat
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Physical dormancy (impermeability of seed coats to water) is related to histological features of the seed coat. This mechanism has ecological importance since it determines the time and space of germination. The aim of the present study was to compare the histology and impermeability of the seed coat in five Neotropical Acacia species from xerophytic forests of central Argentina: Acacia aroma, A. caven, A. atramentaria, A. gilliesii and A. praecox. An imbibition experiment was performed to determine the presence or absence of physical dormancy. Seed coat structure was studied through histochemical analysis. The seeds of A. gilliesii and A. praecox were treated with ammonium ferrous sulfate to identify the sites of water entry. Acacia aroma, A. caven and A. atramentaria exhibited physical dormancy; the seed coat was very thick and compact, with a wide, sclerified parenchyma and a “water gap” for water uptake. Seed coat impermeability in these species was mainly attributed to characteristics of the lignified epidermis. By contrast, A. gilliesii and A. praecox did not have physical dormancy and showed thin seed coats with a much narrower sclerified parenchyma. Water entered the seeds of A. gilliesii and A. praecox not only through the hilar zone but also through the entire surface of the seed coat. Differences in the seed coat structure among species could be related to different regenerative responses to environmental conditions that would facilitate the coexistence of these Acacia species in the xerophytic forests of Córdoba, Argentina.
Fil: Venier, Maria Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Funes, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Carrizo Garcia, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
description Physical dormancy (impermeability of seed coats to water) is related to histological features of the seed coat. This mechanism has ecological importance since it determines the time and space of germination. The aim of the present study was to compare the histology and impermeability of the seed coat in five Neotropical Acacia species from xerophytic forests of central Argentina: Acacia aroma, A. caven, A. atramentaria, A. gilliesii and A. praecox. An imbibition experiment was performed to determine the presence or absence of physical dormancy. Seed coat structure was studied through histochemical analysis. The seeds of A. gilliesii and A. praecox were treated with ammonium ferrous sulfate to identify the sites of water entry. Acacia aroma, A. caven and A. atramentaria exhibited physical dormancy; the seed coat was very thick and compact, with a wide, sclerified parenchyma and a “water gap” for water uptake. Seed coat impermeability in these species was mainly attributed to characteristics of the lignified epidermis. By contrast, A. gilliesii and A. praecox did not have physical dormancy and showed thin seed coats with a much narrower sclerified parenchyma. Water entered the seeds of A. gilliesii and A. praecox not only through the hilar zone but also through the entire surface of the seed coat. Differences in the seed coat structure among species could be related to different regenerative responses to environmental conditions that would facilitate the coexistence of these Acacia species in the xerophytic forests of Córdoba, Argentina.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
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 http://hdl.handle.net/11336/273021
Venier, Maria Paula; Funes, Guillermo; Carrizo Garcia, Carolina; Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina; Elsevier Gmbh; Flora; 207; 1; 1-2012; 39-46
0367-2530
CONICET Digital
CONICET
url http://hdl.handle.net/11336/273021
identifier_str_mv Venier, Maria Paula; Funes, Guillermo; Carrizo Garcia, Carolina; Physical dormancy and histological features of seeds of five Acacia species (Fabaceae) from xerophytic forests in central Argentina; Elsevier Gmbh; Flora; 207; 1; 1-2012; 39-46
0367-2530
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/sciencedirect.com/science/article/pii/S036725301100154X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.flora.2011.07.017
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Gmbh
publisher.none.fl_str_mv Elsevier Gmbh
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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