Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon

Currently classified within the Ericales, Pentaphylacaceae comprises 511 species and 14 genera with tropical and subtropical distributions. Ternstroemia, the genus with the most species of the family, exhibits the greatest diversity and the broadest geographic range within the family, with Brazil ho...

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Autores: Gasparino, Eduardo Custódio [UNESP], Cerdan, Isaura de Paula, Dutra, Fernanda Vitorete [UNESP], Vieira, Jaqueline Alves [UNESP], Sampaio, Daniela [UNESP]
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/314129
Acceso en línea:https://hdl.handle.net/11449/314129
Access Level:acceso abierto
Palabra clave:Ericales
Palynology
Pollen grains
Taxonomy
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spelling Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxonPollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxonEricalesPalynologyPollen grainsTaxonomyCurrently classified within the Ericales, Pentaphylacaceae comprises 511 species and 14 genera with tropical and subtropical distributions. Ternstroemia, the genus with the most species of the family, exhibits the greatest diversity and the broadest geographic range within the family, with Brazil hosting the highest number of species. The species within this genus are challenging to delineate due to their morphological similarities, particularly in floral organs, with no detailed descriptions of their pollen morphology. This study aimed to morphologically analyze the pollen of eight Ternstroemia species and Freziera atlantica (a related Brazilian species), providing both qualitative and quantitative data on pollen grains that could help in species delimitation. Pollen grains were acetolyzed and measured, qualitative data was described, and quantitative data was analyzed using descriptive statistics. Stamen data were added to the pollen data for multivariate analyses. An artificial pollen key and illustrations in light microscopy (LM) and scanning electron microscopy (SEM) are presented. Ternstroemia pollen grains are monads, isopolar, small to medium, prolate spheroidal or subprolate, 3-colporate, and microreticulate. The ornamentation, presence of a costa, and a lalongate endoaperture may serve as diagnostic features for the genus, since in F. atlantica we observed psilateperforate pollen, without a costa and with a circular endoaperture. Despite consistent pollen morphology, features such as amb, ectoaperture length, and the shape and position of the apertures help distinguish Ternstroemia species.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)OutraPreprintCAPES: 88887.511615/2020-00FAPESP: 2022/05573-8PalynologyInstituto de Biociências, Letras e Ciências ExatasUniversidade Estadual Paulista (Unesp)2025-10-07T14:12:40Z2025-09-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdf1558-9188https://hdl.handle.net/11449/31412910.1080/01916122.2025.256250614710491459810731027256440186987547894047282540934825169160035984884638473262780engPalynologyinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPGasparino, Eduardo Custódio [UNESP]Cerdan, Isaura de PaulaDutra, Fernanda Vitorete [UNESP]Vieira, Jaqueline Alves [UNESP]Sampaio, Daniela [UNESP]2025-10-07T18:29:01Zoai:repositorio.unesp.br:11449/314129Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-10-07T18:29:01Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
title Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
spellingShingle Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
Gasparino, Eduardo Custódio [UNESP]
Ericales
Palynology
Pollen grains
Taxonomy
title_short Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
title_full Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
title_fullStr Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
title_full_unstemmed Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
title_sort Pollen morphology of Ternstroemia Mutis ex L.f. (Pentaphylacaceae): describing morphological variations in a stenopalynous taxon
dc.creator.none.fl_str_mv Gasparino, Eduardo Custódio [UNESP]
Cerdan, Isaura de Paula
Dutra, Fernanda Vitorete [UNESP]
Vieira, Jaqueline Alves [UNESP]
Sampaio, Daniela [UNESP]
author Gasparino, Eduardo Custódio [UNESP]
author_facet Gasparino, Eduardo Custódio [UNESP]
Cerdan, Isaura de Paula
Dutra, Fernanda Vitorete [UNESP]
Vieira, Jaqueline Alves [UNESP]
Sampaio, Daniela [UNESP]
author_role author
author2 Cerdan, Isaura de Paula
Dutra, Fernanda Vitorete [UNESP]
Vieira, Jaqueline Alves [UNESP]
Sampaio, Daniela [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Instituto de Biociências, Letras e Ciências Exatas
Universidade Estadual Paulista (Unesp)
dc.subject.por.fl_str_mv Ericales
Palynology
Pollen grains
Taxonomy
topic Ericales
Palynology
Pollen grains
Taxonomy
description Currently classified within the Ericales, Pentaphylacaceae comprises 511 species and 14 genera with tropical and subtropical distributions. Ternstroemia, the genus with the most species of the family, exhibits the greatest diversity and the broadest geographic range within the family, with Brazil hosting the highest number of species. The species within this genus are challenging to delineate due to their morphological similarities, particularly in floral organs, with no detailed descriptions of their pollen morphology. This study aimed to morphologically analyze the pollen of eight Ternstroemia species and Freziera atlantica (a related Brazilian species), providing both qualitative and quantitative data on pollen grains that could help in species delimitation. Pollen grains were acetolyzed and measured, qualitative data was described, and quantitative data was analyzed using descriptive statistics. Stamen data were added to the pollen data for multivariate analyses. An artificial pollen key and illustrations in light microscopy (LM) and scanning electron microscopy (SEM) are presented. Ternstroemia pollen grains are monads, isopolar, small to medium, prolate spheroidal or subprolate, 3-colporate, and microreticulate. The ornamentation, presence of a costa, and a lalongate endoaperture may serve as diagnostic features for the genus, since in F. atlantica we observed psilateperforate pollen, without a costa and with a circular endoaperture. Despite consistent pollen morphology, features such as amb, ectoaperture length, and the shape and position of the apertures help distinguish Ternstroemia species.
publishDate 2025
dc.date.none.fl_str_mv 2025-10-07T14:12:40Z
2025-09-15
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 1558-9188
https://hdl.handle.net/11449/314129
10.1080/01916122.2025.2562506
1471049145981073
1027256440186987
5478940472825409
3482516916003598
4884638473262780
identifier_str_mv 1558-9188
10.1080/01916122.2025.2562506
1471049145981073
1027256440186987
5478940472825409
3482516916003598
4884638473262780
url https://hdl.handle.net/11449/314129
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Palynology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Palynology
publisher.none.fl_str_mv Palynology
dc.source.none.fl_str_mv 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 repositoriounesp@unesp.br
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score 15,812429

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