Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00709-020-01499-9 http://hdl.handle.net/11449/201625 |
Resumo: | Floral fragrances play an important role in pollinator attraction; they serve as signals for primary rewards such as nectar. The presence of osmophores (a specialized glandular tissue that produces fragrance) in the terrestrial orchid Cyclopogon has only been described in a single species. There are fragrant and odorless species within this genus, but no data on the similarities or differences between them has been published. Here, we present new data on the lip morphology and ultrastructure from eight Cyclopogon species to better understand the mechanisms of pollinator attraction of this group. To achieve this goal, we used light, scanning, and transmission electron microscopy. Five out of eight species presented globular trichomes associated with fragrance production on the abaxial side of the labellum. Together with subepidermal cells, they compose the secretory tissue. Despite the absence of globular trichomes, C. apricus also presented cells associated with fragrance production. Lipid droplets, plastids containing plastoglobuli, and starch were indicators of secretory activity present in these species. This same pattern of fragrance production and release, associated with flower morphology, may result in the restriction of pollination by halictid bees. |
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Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among speciesFragranceGlobular trichomesOrchidaceaeOsmophoresScentTerrestrial orchidsFloral fragrances play an important role in pollinator attraction; they serve as signals for primary rewards such as nectar. The presence of osmophores (a specialized glandular tissue that produces fragrance) in the terrestrial orchid Cyclopogon has only been described in a single species. There are fragrant and odorless species within this genus, but no data on the similarities or differences between them has been published. Here, we present new data on the lip morphology and ultrastructure from eight Cyclopogon species to better understand the mechanisms of pollinator attraction of this group. To achieve this goal, we used light, scanning, and transmission electron microscopy. Five out of eight species presented globular trichomes associated with fragrance production on the abaxial side of the labellum. Together with subepidermal cells, they compose the secretory tissue. Despite the absence of globular trichomes, C. apricus also presented cells associated with fragrance production. Lipid droplets, plastids containing plastoglobuli, and starch were indicators of secretory activity present in these species. This same pattern of fragrance production and release, associated with flower morphology, may result in the restriction of pollination by halictid bees.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Institute of Biosciences Department of Botany São Paulo State University – UNESPInstitute of Biosciences Department of Botany São Paulo State University – UNESPCNPq: 304396/2015-0CAPES: 88882.317776/2019-01Universidade Estadual Paulista (Unesp)Adachi, Sérgio Akira [UNESP]Machado, Silvia Rodrigues [UNESP]2020-12-12T02:37:34Z2020-12-12T02:37:34Z2020-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1139-1148http://dx.doi.org/10.1007/s00709-020-01499-9Protoplasma, v. 257, n. 4, p. 1139-1148, 2020.1615-61020033-183Xhttp://hdl.handle.net/11449/20162510.1007/s00709-020-01499-92-s2.0-85081738554Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProtoplasmainfo:eu-repo/semantics/openAccess2021-10-22T20:42:41Zoai:repositorio.unesp.br:11449/201625Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:32:37.197851Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species |
title |
Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species |
spellingShingle |
Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species Adachi, Sérgio Akira [UNESP] Fragrance Globular trichomes Orchidaceae Osmophores Scent Terrestrial orchids |
title_short |
Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species |
title_full |
Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species |
title_fullStr |
Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species |
title_full_unstemmed |
Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species |
title_sort |
Lip morphology and ultrastructure of osmophores in Cyclopogon (Orchidaceae) reveal a degree of morphological differentiation among species |
author |
Adachi, Sérgio Akira [UNESP] |
author_facet |
Adachi, Sérgio Akira [UNESP] Machado, Silvia Rodrigues [UNESP] |
author_role |
author |
author2 |
Machado, Silvia Rodrigues [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Adachi, Sérgio Akira [UNESP] Machado, Silvia Rodrigues [UNESP] |
dc.subject.por.fl_str_mv |
Fragrance Globular trichomes Orchidaceae Osmophores Scent Terrestrial orchids |
topic |
Fragrance Globular trichomes Orchidaceae Osmophores Scent Terrestrial orchids |
description |
Floral fragrances play an important role in pollinator attraction; they serve as signals for primary rewards such as nectar. The presence of osmophores (a specialized glandular tissue that produces fragrance) in the terrestrial orchid Cyclopogon has only been described in a single species. There are fragrant and odorless species within this genus, but no data on the similarities or differences between them has been published. Here, we present new data on the lip morphology and ultrastructure from eight Cyclopogon species to better understand the mechanisms of pollinator attraction of this group. To achieve this goal, we used light, scanning, and transmission electron microscopy. Five out of eight species presented globular trichomes associated with fragrance production on the abaxial side of the labellum. Together with subepidermal cells, they compose the secretory tissue. Despite the absence of globular trichomes, C. apricus also presented cells associated with fragrance production. Lipid droplets, plastids containing plastoglobuli, and starch were indicators of secretory activity present in these species. This same pattern of fragrance production and release, associated with flower morphology, may result in the restriction of pollination by halictid bees. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:37:34Z 2020-12-12T02:37:34Z 2020-07-01 |
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/10.1007/s00709-020-01499-9 Protoplasma, v. 257, n. 4, p. 1139-1148, 2020. 1615-6102 0033-183X http://hdl.handle.net/11449/201625 10.1007/s00709-020-01499-9 2-s2.0-85081738554 |
url |
http://dx.doi.org/10.1007/s00709-020-01499-9 http://hdl.handle.net/11449/201625 |
identifier_str_mv |
Protoplasma, v. 257, n. 4, p. 1139-1148, 2020. 1615-6102 0033-183X 10.1007/s00709-020-01499-9 2-s2.0-85081738554 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Protoplasma |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1139-1148 |
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_ |
1808129216747667456 |