Floral ontogeny and vasculature in Xyridaceae, with particular reference to staminodes and stylar appendages
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
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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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 0,640 |
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) |
repository.mail.fl_str_mv |
|
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1808128929689501696 |