Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages

Detalhes bibliográficos
Autor(a) principal: Sajo, M. Graça [UNESP]
Data de Publicação: 2017
Outros Autores: Oriani, Aline [UNESP], Scatena, Vera L. [UNESP], Rudall, Paula J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s00606-017-1438-3
http://hdl.handle.net/11449/169905
Resumo: We provide a detailed comparative study of floral ontogeny and vasculature in Xyridaceae, including Xyris, Abolboda and Orectanthe. We evaluate these data in the context of a recent well-resolved phylogenetic analysis of Poales to compare floral structures within the xyrid clade (Xyridaceae and Eriocaulaceae). Xyrids are relatively diverse in both flower structure and anatomy; many species incorporate diverse and unusual floral structures such as staminodes and stylar appendages. Xyridaceae possess three generally epipetalous stamens in a single whorl; the “missing” stamen whorl is either entirely absent or transformed into staminodes. Fertile stamens each receive a single vascular bundle diverged from the median petal bundle. In Xyris, the stamen bundle diverges at the flower base, but it diverges at upper flower levels in both Abolboda and Orectanthe. In species of Abolboda that possess staminodes, staminode vasculature is closely associated with the lateral vasculature of each petal. Despite the likely sister-group relationship between Eriocaulaceae and Xyridaceae, our character optimization indicates that the stylar appendages that characterize some Xyridaceae (except Xyris and Achlyphila) are non-homologous with those of some Eriocaulaceae. On the other hand, it remains equivocal whether the loss of a fertile outer androecial whorl occurred more than once during the evolutionary history of the xyrid clade; this transition occurred either once followed by a reversal to fertile stamens in Eriocauloideae and staminodes in some Xyridaceae, or twice independently within both Xyridaceae and Eriocaulaceae.
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spelling Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendagesFlower anatomyPoalesStamensStylar appendagesVasculatureWe provide a detailed comparative study of floral ontogeny and vasculature in Xyridaceae, including Xyris, Abolboda and Orectanthe. We evaluate these data in the context of a recent well-resolved phylogenetic analysis of Poales to compare floral structures within the xyrid clade (Xyridaceae and Eriocaulaceae). Xyrids are relatively diverse in both flower structure and anatomy; many species incorporate diverse and unusual floral structures such as staminodes and stylar appendages. Xyridaceae possess three generally epipetalous stamens in a single whorl; the “missing” stamen whorl is either entirely absent or transformed into staminodes. Fertile stamens each receive a single vascular bundle diverged from the median petal bundle. In Xyris, the stamen bundle diverges at the flower base, but it diverges at upper flower levels in both Abolboda and Orectanthe. In species of Abolboda that possess staminodes, staminode vasculature is closely associated with the lateral vasculature of each petal. Despite the likely sister-group relationship between Eriocaulaceae and Xyridaceae, our character optimization indicates that the stylar appendages that characterize some Xyridaceae (except Xyris and Achlyphila) are non-homologous with those of some Eriocaulaceae. On the other hand, it remains equivocal whether the loss of a fertile outer androecial whorl occurred more than once during the evolutionary history of the xyrid clade; this transition occurred either once followed by a reversal to fertile stamens in Eriocauloideae and staminodes in some Xyridaceae, or twice independently within both Xyridaceae and Eriocaulaceae.Instituto de Biociências Universidade Estadual Paulista (UNESP)Royal Botanic GardensInstituto de Biociências Universidade Estadual Paulista (UNESP)Universidade Estadual Paulista (Unesp)Royal Botanic GardensSajo, M. Graça [UNESP]Oriani, Aline [UNESP]Scatena, Vera L. [UNESP]Rudall, Paula J.2018-12-11T16:48:08Z2018-12-11T16:48:08Z2017-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1293-1310application/pdfhttp://dx.doi.org/10.1007/s00606-017-1438-3Plant Systematics and Evolution, v. 303, n. 9, p. 1293-1310, 2017.1615-61100378-2697http://hdl.handle.net/11449/16990510.1007/s00606-017-1438-32-s2.0-850220923302-s2.0-85022092330.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlant Systematics and Evolution0,6400,640info:eu-repo/semantics/openAccess2023-11-22T06:13:27Zoai:repositorio.unesp.br:11449/169905Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:25:17.335978Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
title Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
spellingShingle Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
Sajo, M. Graça [UNESP]
Flower anatomy
Poales
Stamens
Stylar appendages
Vasculature
title_short Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
title_full Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
title_fullStr Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
title_full_unstemmed Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
title_sort Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
author Sajo, M. Graça [UNESP]
author_facet Sajo, M. Graça [UNESP]
Oriani, Aline [UNESP]
Scatena, Vera L. [UNESP]
Rudall, Paula J.
author_role author
author2 Oriani, Aline [UNESP]
Scatena, Vera L. [UNESP]
Rudall, Paula J.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Royal Botanic Gardens
dc.contributor.author.fl_str_mv Sajo, M. Graça [UNESP]
Oriani, Aline [UNESP]
Scatena, Vera L. [UNESP]
Rudall, Paula J.
dc.subject.por.fl_str_mv Flower anatomy
Poales
Stamens
Stylar appendages
Vasculature
topic Flower anatomy
Poales
Stamens
Stylar appendages
Vasculature
description We provide a detailed comparative study of floral ontogeny and vasculature in Xyridaceae, including Xyris, Abolboda and Orectanthe. We evaluate these data in the context of a recent well-resolved phylogenetic analysis of Poales to compare floral structures within the xyrid clade (Xyridaceae and Eriocaulaceae). Xyrids are relatively diverse in both flower structure and anatomy; many species incorporate diverse and unusual floral structures such as staminodes and stylar appendages. Xyridaceae possess three generally epipetalous stamens in a single whorl; the “missing” stamen whorl is either entirely absent or transformed into staminodes. Fertile stamens each receive a single vascular bundle diverged from the median petal bundle. In Xyris, the stamen bundle diverges at the flower base, but it diverges at upper flower levels in both Abolboda and Orectanthe. In species of Abolboda that possess staminodes, staminode vasculature is closely associated with the lateral vasculature of each petal. Despite the likely sister-group relationship between Eriocaulaceae and Xyridaceae, our character optimization indicates that the stylar appendages that characterize some Xyridaceae (except Xyris and Achlyphila) are non-homologous with those of some Eriocaulaceae. On the other hand, it remains equivocal whether the loss of a fertile outer androecial whorl occurred more than once during the evolutionary history of the xyrid clade; this transition occurred either once followed by a reversal to fertile stamens in Eriocauloideae and staminodes in some Xyridaceae, or twice independently within both Xyridaceae and Eriocaulaceae.
publishDate 2017
dc.date.none.fl_str_mv 2017-11-01
2018-12-11T16:48:08Z
2018-12-11T16:48:08Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s00606-017-1438-3
Plant Systematics and Evolution, v. 303, n. 9, p. 1293-1310, 2017.
1615-6110
0378-2697
http://hdl.handle.net/11449/169905
10.1007/s00606-017-1438-3
2-s2.0-85022092330
2-s2.0-85022092330.pdf
url http://dx.doi.org/10.1007/s00606-017-1438-3
http://hdl.handle.net/11449/169905
identifier_str_mv Plant Systematics and Evolution, v. 303, n. 9, p. 1293-1310, 2017.
1615-6110
0378-2697
10.1007/s00606-017-1438-3
2-s2.0-85022092330
2-s2.0-85022092330.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Plant Systematics and Evolution
0,640
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1293-1310
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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