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dc.contributor.author
Nuñez Florentin, Mariela
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dc.contributor.author
Verstraete, Brecht
dc.contributor.author
Salas, Roberto Manuel
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dc.contributor.author
Dessein, Steven
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dc.date.available
2024-04-05T11:49:40Z
dc.date.issued
2023-07
dc.identifier.citation
Nuñez Florentin, Mariela; Verstraete, Brecht; Salas, Roberto Manuel; Dessein, Steven; Insights into the morphology and evolution of orbicules in the Spermacoce clade (Spermacoceae-Rubiaceae) and implications for systematics; Wiley Blackwell Publishing, Inc; Botanical Journal of The Linnean Society; 7-2023; 1-18
dc.identifier.issn
0024-4074
dc.identifier.uri
http://hdl.handle.net/11336/232046
dc.description.abstract
The orbicules are tiny structures of sporopollenin that occur on the interior wall of anthers in several groups of plants, and they are associated with pollen grains and tapetal cells. Although their function remains still unresolved, they have been widely used in systematics. Rubiaceae is one of the most studied families in this aspect. However, scarce information is available about the orbicules in the tribe Spermacoceae, especially in the Spermacoce clade. The main objectives of this work were to investigate the occurrence, general morphology, evolution, and systematic utility of the orbicular characters in the Spermacoce clade. We investigated the presence/absence, size, abundance, shape, and ornamentation of orbicules in 104 specimens from 84 species in the Spermacoce clade using scanning electron microscopy (SEM). On the basis of these features, the ancestral state reconstruction analyses were performed on a custom-made phylogeny by stochastic character mapping. The orbicules are present in 38 (44%) of 84 analysed species, corresponding to 13 genera (56%) of the Spermacoce clade. Seven genera have orbicules in all analysed species, eight genera lack orbicules in all analysed species, and six genera show both presence and absence of orbicules. The absence of orbicules was estimated to be the ancestral state for the Spermacoce clade and the presence of orbicules evolved several times independently within Clade B. The absence of orbicules in the common ancestor of the Spermacoce clade can be seen as one of the independent losses that occurred during the evolutionary history of the Rubiaceae.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ANCESTRAL STATE RECONSTRUCTION
dc.subject
EVOLUTIONARY TRENDS
dc.subject
TRAIT EVOLUTION
dc.subject
UBISCH BODIES
dc.subject.classification
Ciencias de las Plantas, Botánica
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Insights into the morphology and evolution of orbicules in the Spermacoce clade (Spermacoceae-Rubiaceae) and implications for systematics
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-04-05T11:06:46Z
dc.journal.pagination
1-18
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Nuñez Florentin, Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
dc.description.fil
Fil: Verstraete, Brecht. No especifíca;
dc.description.fil
Fil: Salas, Roberto Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
dc.description.fil
Fil: Dessein, Steven. No especifíca;
dc.journal.title
Botanical Journal of The Linnean Society
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1093/botlinnean/boad023
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/botlinnean/article-abstract/203/3/253/7218943?redirectedFrom=fulltext&login=false
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