Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1186/s12870-018-1398-y http://hdl.handle.net/11449/164607 |
Resumo: | Background: Nectar gain and loss are important flower transitions observed in angiosperms, and are particularly common in orchids. To understand such transitions, the availability of detailed anatomical data and species-level phylogenies are crucial. We investigated the evolution of food deception in Epidendrum, one of the largest orchid genera, using genus phylogeny to map transitions between nectar gain and loss among different clades. Associations between anatomical and histochemical changes and nectar gain and loss were examined using fresh material available from 27 species. The evolution of nectar presence/absence in Epidendrum species was investigated in a phylogenetic framework of 47 species, using one nuclear and five plastid DNA regions available from GenBank and sequenced in this study. Results: The presence or absence of nectar was strongly associated with changes in the inner epidermal tissues of nectaries. Nectar-secreting species have unornamented epidermal tissue, in contrast to the unicellular trichomes found on the epidermis of food deceptive species. Bayesian tests confirmed that transitions occurred preferentially from nectar presence to nectar absence across the Epidendrum phylogeny. In addition, independent nectar loss events were found across the phylogeny, suggesting a lack of constraint for these transitions. Conclusions: Ornamented nectaries may play an important role in the deceptive pollination strategy by secreting volatile organic compounds and providing tactile stimuli to pollinators. The recurrent and apparently irreversible pattern of nectar loss in Epidendrum suggests that food deception may constitute an alternative evolutionarily stable strategy, as observed in other orchid groups. |
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Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidenceCharacter reconstructionCuniculusEvolutionNectarNectary anatomyOrchidaceaeOsmophoresPhylogenyRewardless speciesBackground: Nectar gain and loss are important flower transitions observed in angiosperms, and are particularly common in orchids. To understand such transitions, the availability of detailed anatomical data and species-level phylogenies are crucial. We investigated the evolution of food deception in Epidendrum, one of the largest orchid genera, using genus phylogeny to map transitions between nectar gain and loss among different clades. Associations between anatomical and histochemical changes and nectar gain and loss were examined using fresh material available from 27 species. The evolution of nectar presence/absence in Epidendrum species was investigated in a phylogenetic framework of 47 species, using one nuclear and five plastid DNA regions available from GenBank and sequenced in this study. Results: The presence or absence of nectar was strongly associated with changes in the inner epidermal tissues of nectaries. Nectar-secreting species have unornamented epidermal tissue, in contrast to the unicellular trichomes found on the epidermis of food deceptive species. Bayesian tests confirmed that transitions occurred preferentially from nectar presence to nectar absence across the Epidendrum phylogeny. In addition, independent nectar loss events were found across the phylogeny, suggesting a lack of constraint for these transitions. Conclusions: Ornamented nectaries may play an important role in the deceptive pollination strategy by secreting volatile organic compounds and providing tactile stimuli to pollinators. The recurrent and apparently irreversible pattern of nectar loss in Epidendrum suggests that food deception may constitute an alternative evolutionarily stable strategy, as observed in other orchid groups.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Nucleo Pesquisa Orquidario Estado, Inst Bot, BR-04301902 Sao Paulo, SP, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Rio Claro, SP, BrazilUniv Fed Pernambuco, Dept Bot, Ctr Ciencias Biol, BR-50670420 Recife, PE, BrazilUniv Estadual Campinas, Inst Biol, Dept Biol Vegetal, BR-13083862 Campinas, SP, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Rio Claro, SP, BrazilCNPq: 440367/2014-0CNPq: 0588/12-1CNPq: 300927/2016-9CNPq: 300819/2016-1CAPES: 300927/2016-9CAPES: 0469-13-0BmcNucleo Pesquisa Orquidario EstadoUniversidade Estadual Paulista (Unesp)Universidade Federal de Pernambuco (UFPE)Universidade Estadual de Campinas (UNICAMP)Cardoso-Gustavson, PolianaSaka, Mariana Naomi [UNESP]Pessoa, Edlley MaxPalma-Silva, ClarissePinheiro, Fabio2018-11-26T17:55:17Z2018-11-26T17:55:17Z2018-09-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article13application/pdfhttp://dx.doi.org/10.1186/s12870-018-1398-yBmc Plant Biology. London: Bmc, v. 18, 13 p., 2018.1471-2229http://hdl.handle.net/11449/16460710.1186/s12870-018-1398-yWOS:000443713000002WOS000443713000002.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBmc Plant Biology1,887info:eu-repo/semantics/openAccess2023-10-05T06:06:30Zoai:repositorio.unesp.br:11449/164607Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:05:33.648008Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence |
title |
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence |
spellingShingle |
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence Cardoso-Gustavson, Poliana Character reconstruction Cuniculus Evolution Nectar Nectary anatomy Orchidaceae Osmophores Phylogeny Rewardless species |
title_short |
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence |
title_full |
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence |
title_fullStr |
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence |
title_full_unstemmed |
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence |
title_sort |
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence |
author |
Cardoso-Gustavson, Poliana |
author_facet |
Cardoso-Gustavson, Poliana Saka, Mariana Naomi [UNESP] Pessoa, Edlley Max Palma-Silva, Clarisse Pinheiro, Fabio |
author_role |
author |
author2 |
Saka, Mariana Naomi [UNESP] Pessoa, Edlley Max Palma-Silva, Clarisse Pinheiro, Fabio |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Nucleo Pesquisa Orquidario Estado Universidade Estadual Paulista (Unesp) Universidade Federal de Pernambuco (UFPE) Universidade Estadual de Campinas (UNICAMP) |
dc.contributor.author.fl_str_mv |
Cardoso-Gustavson, Poliana Saka, Mariana Naomi [UNESP] Pessoa, Edlley Max Palma-Silva, Clarisse Pinheiro, Fabio |
dc.subject.por.fl_str_mv |
Character reconstruction Cuniculus Evolution Nectar Nectary anatomy Orchidaceae Osmophores Phylogeny Rewardless species |
topic |
Character reconstruction Cuniculus Evolution Nectar Nectary anatomy Orchidaceae Osmophores Phylogeny Rewardless species |
description |
Background: Nectar gain and loss are important flower transitions observed in angiosperms, and are particularly common in orchids. To understand such transitions, the availability of detailed anatomical data and species-level phylogenies are crucial. We investigated the evolution of food deception in Epidendrum, one of the largest orchid genera, using genus phylogeny to map transitions between nectar gain and loss among different clades. Associations between anatomical and histochemical changes and nectar gain and loss were examined using fresh material available from 27 species. The evolution of nectar presence/absence in Epidendrum species was investigated in a phylogenetic framework of 47 species, using one nuclear and five plastid DNA regions available from GenBank and sequenced in this study. Results: The presence or absence of nectar was strongly associated with changes in the inner epidermal tissues of nectaries. Nectar-secreting species have unornamented epidermal tissue, in contrast to the unicellular trichomes found on the epidermis of food deceptive species. Bayesian tests confirmed that transitions occurred preferentially from nectar presence to nectar absence across the Epidendrum phylogeny. In addition, independent nectar loss events were found across the phylogeny, suggesting a lack of constraint for these transitions. Conclusions: Ornamented nectaries may play an important role in the deceptive pollination strategy by secreting volatile organic compounds and providing tactile stimuli to pollinators. The recurrent and apparently irreversible pattern of nectar loss in Epidendrum suggests that food deception may constitute an alternative evolutionarily stable strategy, as observed in other orchid groups. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-26T17:55:17Z 2018-11-26T17:55:17Z 2018-09-04 |
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/10.1186/s12870-018-1398-y Bmc Plant Biology. London: Bmc, v. 18, 13 p., 2018. 1471-2229 http://hdl.handle.net/11449/164607 10.1186/s12870-018-1398-y WOS:000443713000002 WOS000443713000002.pdf |
url |
http://dx.doi.org/10.1186/s12870-018-1398-y http://hdl.handle.net/11449/164607 |
identifier_str_mv |
Bmc Plant Biology. London: Bmc, v. 18, 13 p., 2018. 1471-2229 10.1186/s12870-018-1398-y WOS:000443713000002 WOS000443713000002.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Bmc Plant Biology 1,887 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
13 application/pdf |
dc.publisher.none.fl_str_mv |
Bmc |
publisher.none.fl_str_mv |
Bmc |
dc.source.none.fl_str_mv |
Web of Science 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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1808128314195312640 |