Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.flora.2021.151992 http://hdl.handle.net/11449/230118 |
Resumo: | Stylosanthes comprises about 50 species, with Brazil being one of the main diversity centers. Stylosanthes guianensis constitutes a problematic taxonomic complex, comprising four varieties of S. guianensis and seven other species. Considering the difficulty of taxon delimitation, this study assessed the potential value of the secretory structures and other anatomical characters to the diagnosis of taxa within the complex. We analyzed the leaflet and stem anatomy and micromorphology of representatives of the S. guianensis complex using light and scanning electron microscopy. Long uniseriate non-glandular hairs occurred on the stems and leaflets of all species. Secretory emergences with a dilated base and a tapered distal portion occurred on both stems and leaflets, except in S. guianensis var. canescens. Polysaccharides, lipids and terpenes were histochemically detected in the secretory exudates. In the stem of S. gracilis, chlorenchyma cells were observed to be radially elongated, while in the other taxa studied they were isodiametric. On leaflets of S. guianensis var. pauciflora, S. acuminata, S. aurea, and S. gracilis, the midrib was eccentric and the veins closer to the leaflet margin had larger fiber caps. Anatomical structures proved to be useful for separating taxa. Stylosanthes guianensis var. canescens and S. guianensis var. pauciflora differ from the other varieties of the species and are possibly worthy of recognition at species rank. Our findings also reinforce the status of S. gracilis as a distinct species. |
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Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significanceFabaceaeLeafletSecretory emergencesShootStructureTaxonomyStylosanthes comprises about 50 species, with Brazil being one of the main diversity centers. Stylosanthes guianensis constitutes a problematic taxonomic complex, comprising four varieties of S. guianensis and seven other species. Considering the difficulty of taxon delimitation, this study assessed the potential value of the secretory structures and other anatomical characters to the diagnosis of taxa within the complex. We analyzed the leaflet and stem anatomy and micromorphology of representatives of the S. guianensis complex using light and scanning electron microscopy. Long uniseriate non-glandular hairs occurred on the stems and leaflets of all species. Secretory emergences with a dilated base and a tapered distal portion occurred on both stems and leaflets, except in S. guianensis var. canescens. Polysaccharides, lipids and terpenes were histochemically detected in the secretory exudates. In the stem of S. gracilis, chlorenchyma cells were observed to be radially elongated, while in the other taxa studied they were isodiametric. On leaflets of S. guianensis var. pauciflora, S. acuminata, S. aurea, and S. gracilis, the midrib was eccentric and the veins closer to the leaflet margin had larger fiber caps. Anatomical structures proved to be useful for separating taxa. Stylosanthes guianensis var. canescens and S. guianensis var. pauciflora differ from the other varieties of the species and are possibly worthy of recognition at species rank. Our findings also reinforce the status of S. gracilis as a distinct species.Department of Biostatistics Plant Biology Parasitology and Zoology São Paulo State University – UNESP Institute of Biosciences – IBB, PO Box 510Institute of Systematic Botany New York Botanical Garden, 2900 Southern Blvd.Embrapa Recursos Genéticos e Biotecnologia PqEB, PO Box 02372Department of Botany Laboratory of Cytogenetics and Plant Evolution Pernambuco Federal UniversityAccelerated Taxonomy Department Royal Botanic Gardens KewDepartment of Biostatistics Plant Biology Parasitology and Zoology São Paulo State University – UNESP Institute of Biosciences – IBB, PO Box 510Universidade Estadual Paulista (UNESP)New York Botanical GardenEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Pernambuco Federal UniversityKewGissi, Danilo Soares [UNESP]Seixas, Diana Pacheco [UNESP]Fortuna-Perez, Ana Paula [UNESP]Torke, Benjamin M.Simon, Marcelo FragomeniSouza, GustavoLewis, Gwilym PeterRodrigues, Tatiane Maria [UNESP]2022-04-29T08:38:02Z2022-04-29T08:38:02Z2022-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.flora.2021.151992Flora: Morphology, Distribution, Functional Ecology of Plants, v. 287.0367-2530http://hdl.handle.net/11449/23011810.1016/j.flora.2021.1519922-s2.0-85121803350Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFlora: Morphology, Distribution, Functional Ecology of Plantsinfo:eu-repo/semantics/openAccess2022-04-29T08:38:02Zoai:repositorio.unesp.br:11449/230118Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:38:02Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance |
title |
Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance |
spellingShingle |
Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance Gissi, Danilo Soares [UNESP] Fabaceae Leaflet Secretory emergences Shoot Structure Taxonomy |
title_short |
Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance |
title_full |
Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance |
title_fullStr |
Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance |
title_full_unstemmed |
Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance |
title_sort |
Leaf and stem anatomy of the Stylosanthes guianensis complex (Aubl.) Sw. (Leguminosae, Papilionoideae, Dalbergieae) and its systematic significance |
author |
Gissi, Danilo Soares [UNESP] |
author_facet |
Gissi, Danilo Soares [UNESP] Seixas, Diana Pacheco [UNESP] Fortuna-Perez, Ana Paula [UNESP] Torke, Benjamin M. Simon, Marcelo Fragomeni Souza, Gustavo Lewis, Gwilym Peter Rodrigues, Tatiane Maria [UNESP] |
author_role |
author |
author2 |
Seixas, Diana Pacheco [UNESP] Fortuna-Perez, Ana Paula [UNESP] Torke, Benjamin M. Simon, Marcelo Fragomeni Souza, Gustavo Lewis, Gwilym Peter Rodrigues, Tatiane Maria [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) New York Botanical Garden Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Pernambuco Federal University Kew |
dc.contributor.author.fl_str_mv |
Gissi, Danilo Soares [UNESP] Seixas, Diana Pacheco [UNESP] Fortuna-Perez, Ana Paula [UNESP] Torke, Benjamin M. Simon, Marcelo Fragomeni Souza, Gustavo Lewis, Gwilym Peter Rodrigues, Tatiane Maria [UNESP] |
dc.subject.por.fl_str_mv |
Fabaceae Leaflet Secretory emergences Shoot Structure Taxonomy |
topic |
Fabaceae Leaflet Secretory emergences Shoot Structure Taxonomy |
description |
Stylosanthes comprises about 50 species, with Brazil being one of the main diversity centers. Stylosanthes guianensis constitutes a problematic taxonomic complex, comprising four varieties of S. guianensis and seven other species. Considering the difficulty of taxon delimitation, this study assessed the potential value of the secretory structures and other anatomical characters to the diagnosis of taxa within the complex. We analyzed the leaflet and stem anatomy and micromorphology of representatives of the S. guianensis complex using light and scanning electron microscopy. Long uniseriate non-glandular hairs occurred on the stems and leaflets of all species. Secretory emergences with a dilated base and a tapered distal portion occurred on both stems and leaflets, except in S. guianensis var. canescens. Polysaccharides, lipids and terpenes were histochemically detected in the secretory exudates. In the stem of S. gracilis, chlorenchyma cells were observed to be radially elongated, while in the other taxa studied they were isodiametric. On leaflets of S. guianensis var. pauciflora, S. acuminata, S. aurea, and S. gracilis, the midrib was eccentric and the veins closer to the leaflet margin had larger fiber caps. Anatomical structures proved to be useful for separating taxa. Stylosanthes guianensis var. canescens and S. guianensis var. pauciflora differ from the other varieties of the species and are possibly worthy of recognition at species rank. Our findings also reinforce the status of S. gracilis as a distinct species. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-29T08:38:02Z 2022-04-29T08:38:02Z 2022-02-01 |
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/10.1016/j.flora.2021.151992 Flora: Morphology, Distribution, Functional Ecology of Plants, v. 287. 0367-2530 http://hdl.handle.net/11449/230118 10.1016/j.flora.2021.151992 2-s2.0-85121803350 |
url |
http://dx.doi.org/10.1016/j.flora.2021.151992 http://hdl.handle.net/11449/230118 |
identifier_str_mv |
Flora: Morphology, Distribution, Functional Ecology of Plants, v. 287. 0367-2530 10.1016/j.flora.2021.151992 2-s2.0-85121803350 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Flora: Morphology, Distribution, Functional Ecology of Plants |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
|
_version_ |
1799965226182901760 |