Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence

Autores
Guarise, Nicolas Javier; Vegetti, Abelardo Carlos; Pozner, Raúl Ernesto
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Premise of the study: The understanding of homoplasic structures becomes more relevant when they are complex and define large angiosperm taxa. Inflorescence architecture usually fulfills both features, as happens with Cyperus, a genus with two taxonomical subdivisions characterized either by alternative expressions of Kranz anatomy (C3or C4) or inflorescence shape (condensed or lax). Those subdivisions are not completely congruent because at least one of these presumed characters has evolved several times. We focused a SEM study on the inflorescence development in species with condensed inflorescences and different photosynthetic anatomy to test the possibility that condensed inflorescences of subgen. Anosporum (C3anatomy) have evolved independently from those of subgen. Cyperus (C4anatomy). Methods: Freshly collected inflorescences of C. entrerianus, C. eragrostis, C. oxylepis, and C. incomtus were studied using stereoscopic and scanning electron microscopy. Key results: Condensed inflorescences of Cyperus species with C3and C4anatomy had differences in structure and development: (1) mature structure, (2) position of second-order branching initiation in the first developmental stage of the inflorescence, (3) main axis development and elongation, and branching development, (4) types of ramifications, (5) phyllotaxis and symmetry. Conclusions: Results support multiple origins of condensed inflorescences in Cyperus, based especially on differences in timing during development and elongation of the main axis and branches, branching pattern and phyllotaxis. Structure and development may be the key to using inflorescence morphology as an external feature to distinguish large natural groups within Cyperus based on vegetative anatomy. © 2012 Botanical Society of America.
Fil: Guarise, Nicolas Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Cátedra de Morfología Vegetal; Argentina
Fil: Vegetti, Abelardo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Cátedra de Morfología Vegetal; Argentina
Fil: Pozner, Raúl Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentina
Materia
Branching Pattern
Cyperaceae
Development
Homology
Inflorescence
Phyllotaxis
Prophyll
Spikelet
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:11336/60267
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/60267
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidenceGuarise, Nicolas JavierVegetti, Abelardo CarlosPozner, Raúl ErnestoBranching PatternCyperaceaeDevelopmentHomologyInflorescencePhyllotaxisProphyllSpikelethttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Premise of the study: The understanding of homoplasic structures becomes more relevant when they are complex and define large angiosperm taxa. Inflorescence architecture usually fulfills both features, as happens with Cyperus, a genus with two taxonomical subdivisions characterized either by alternative expressions of Kranz anatomy (C3or C4) or inflorescence shape (condensed or lax). Those subdivisions are not completely congruent because at least one of these presumed characters has evolved several times. We focused a SEM study on the inflorescence development in species with condensed inflorescences and different photosynthetic anatomy to test the possibility that condensed inflorescences of subgen. Anosporum (C3anatomy) have evolved independently from those of subgen. Cyperus (C4anatomy). Methods: Freshly collected inflorescences of C. entrerianus, C. eragrostis, C. oxylepis, and C. incomtus were studied using stereoscopic and scanning electron microscopy. Key results: Condensed inflorescences of Cyperus species with C3and C4anatomy had differences in structure and development: (1) mature structure, (2) position of second-order branching initiation in the first developmental stage of the inflorescence, (3) main axis development and elongation, and branching development, (4) types of ramifications, (5) phyllotaxis and symmetry. Conclusions: Results support multiple origins of condensed inflorescences in Cyperus, based especially on differences in timing during development and elongation of the main axis and branches, branching pattern and phyllotaxis. Structure and development may be the key to using inflorescence morphology as an external feature to distinguish large natural groups within Cyperus based on vegetative anatomy. © 2012 Botanical Society of America.Fil: Guarise, Nicolas Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Cátedra de Morfología Vegetal; ArgentinaFil: Vegetti, Abelardo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Cátedra de Morfología Vegetal; ArgentinaFil: Pozner, Raúl Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; ArgentinaBotanical Society of America2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/mswordapplication/pdfhttp://hdl.handle.net/11336/60267Guarise, Nicolas Javier; Vegetti, Abelardo Carlos; Pozner, Raúl Ernesto; Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence; Botanical Society of America; American Journal of Botany; 99; 8; 6-2012; 1276-12880002-9122CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3732/ajb.1100528info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.3732/ajb.1100528info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:21Zoai:ri.conicet.gov.ar:11336/60267instacron: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:34982025-09-29 10:43:21.853CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence
title Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence
spellingShingle Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence
Guarise, Nicolas Javier
Branching Pattern
Cyperaceae
Development
Homology
Inflorescence
Phyllotaxis
Prophyll
Spikelet
title_short Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence
title_full Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence
title_fullStr Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence
title_full_unstemmed Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence
title_sort Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence
dc.creator.none.fl_str_mv Guarise, Nicolas Javier
Vegetti, Abelardo Carlos
Pozner, Raúl Ernesto
author Guarise, Nicolas Javier
author_facet Guarise, Nicolas Javier
Vegetti, Abelardo Carlos
Pozner, Raúl Ernesto
author_role author
author2 Vegetti, Abelardo Carlos
Pozner, Raúl Ernesto
author2_role author
author
dc.subject.none.fl_str_mv Branching Pattern
Cyperaceae
Development
Homology
Inflorescence
Phyllotaxis
Prophyll
Spikelet
topic Branching Pattern
Cyperaceae
Development
Homology
Inflorescence
Phyllotaxis
Prophyll
Spikelet
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Premise of the study: The understanding of homoplasic structures becomes more relevant when they are complex and define large angiosperm taxa. Inflorescence architecture usually fulfills both features, as happens with Cyperus, a genus with two taxonomical subdivisions characterized either by alternative expressions of Kranz anatomy (C3or C4) or inflorescence shape (condensed or lax). Those subdivisions are not completely congruent because at least one of these presumed characters has evolved several times. We focused a SEM study on the inflorescence development in species with condensed inflorescences and different photosynthetic anatomy to test the possibility that condensed inflorescences of subgen. Anosporum (C3anatomy) have evolved independently from those of subgen. Cyperus (C4anatomy). Methods: Freshly collected inflorescences of C. entrerianus, C. eragrostis, C. oxylepis, and C. incomtus were studied using stereoscopic and scanning electron microscopy. Key results: Condensed inflorescences of Cyperus species with C3and C4anatomy had differences in structure and development: (1) mature structure, (2) position of second-order branching initiation in the first developmental stage of the inflorescence, (3) main axis development and elongation, and branching development, (4) types of ramifications, (5) phyllotaxis and symmetry. Conclusions: Results support multiple origins of condensed inflorescences in Cyperus, based especially on differences in timing during development and elongation of the main axis and branches, branching pattern and phyllotaxis. Structure and development may be the key to using inflorescence morphology as an external feature to distinguish large natural groups within Cyperus based on vegetative anatomy. © 2012 Botanical Society of America.
Fil: Guarise, Nicolas Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Cátedra de Morfología Vegetal; Argentina
Fil: Vegetti, Abelardo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Cátedra de Morfología Vegetal; Argentina
Fil: Pozner, Raúl Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentina
description Premise of the study: The understanding of homoplasic structures becomes more relevant when they are complex and define large angiosperm taxa. Inflorescence architecture usually fulfills both features, as happens with Cyperus, a genus with two taxonomical subdivisions characterized either by alternative expressions of Kranz anatomy (C3or C4) or inflorescence shape (condensed or lax). Those subdivisions are not completely congruent because at least one of these presumed characters has evolved several times. We focused a SEM study on the inflorescence development in species with condensed inflorescences and different photosynthetic anatomy to test the possibility that condensed inflorescences of subgen. Anosporum (C3anatomy) have evolved independently from those of subgen. Cyperus (C4anatomy). Methods: Freshly collected inflorescences of C. entrerianus, C. eragrostis, C. oxylepis, and C. incomtus were studied using stereoscopic and scanning electron microscopy. Key results: Condensed inflorescences of Cyperus species with C3and C4anatomy had differences in structure and development: (1) mature structure, (2) position of second-order branching initiation in the first developmental stage of the inflorescence, (3) main axis development and elongation, and branching development, (4) types of ramifications, (5) phyllotaxis and symmetry. Conclusions: Results support multiple origins of condensed inflorescences in Cyperus, based especially on differences in timing during development and elongation of the main axis and branches, branching pattern and phyllotaxis. Structure and development may be the key to using inflorescence morphology as an external feature to distinguish large natural groups within Cyperus based on vegetative anatomy. © 2012 Botanical Society of America.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
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/11336/60267
Guarise, Nicolas Javier; Vegetti, Abelardo Carlos; Pozner, Raúl Ernesto; Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence; Botanical Society of America; American Journal of Botany; 99; 8; 6-2012; 1276-1288
0002-9122
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60267
identifier_str_mv Guarise, Nicolas Javier; Vegetti, Abelardo Carlos; Pozner, Raúl Ernesto; Multiple origins of congested inflorescences in Cyperus S.S. (Cyperaceae): Developmental and structural evidence; Botanical Society of America; American Journal of Botany; 99; 8; 6-2012; 1276-1288
0002-9122
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3732/ajb.1100528
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.3732/ajb.1100528
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/msword
application/pdf
dc.publisher.none.fl_str_mv Botanical Society of America
publisher.none.fl_str_mv Botanical Society of America
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 13.069144

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