Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3732/ajb.1500138 http://hdl.handle.net/11449/160855 |
Resumo: | PREMISE OF THE STUDY: Most bird-dispersed fruits are green when unripe and become colored and conspicuous when ripe, signaling that fruits are ready to be consumed and dispersed. The color pattern for fruits of Miconia albicans (Melastomataceae), however, is the opposite, with reddish unripe and green ripe fruits. We (1) verified the maintenance over time of its bicolored display, (2) tested the communicative function of unripe fruits, (3) tested the photoprotective role of anthocyanins in unripe fruits, and (4) verified whether green ripe fruits can assimilate carbon. METHODS: Using a paired experiment, we tested whether detection of ripe fruits was higher on infructescences with unripe and ripe fruits compared with infructescences with only ripe fruits. We also measured and compared gas exchange, chlorophyll a fluorescence, and heat dissipation of covered (to prevent anthocyanin synthesis) and uncovered ripe and unripe fruits. KEY RESULTS: Although the bicolored display was maintained over time, unripe fruits had no influence on bird detection and removal of ripe fruits. Ripe and unripe fruits did not assimilate CO2, but they respired instead. CONCLUSIONS: Since the communicative function of unripe fruits was not confirmed, seed dispersers are unlikely to select the display with bicolored fruits. Because of the absence of photosynthetic activity in ripe and unripe fruits and enhanced photoprotective mechanisms in ripe fruits rather than in unripe fruits, we could not confirm the photoprotective role of anthocyanins in unripe fruits. As an alternative hypothesis, we suggest that the bicolored fruit display could be an adaptation to diversify seed dispersal vectors instead of restricting dispersal to birds and that anthocyanins in unripe fruits may have a defense role against pathogens. |
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Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colorsanthocyanin photoprotectionfrugivoryfruit contrastfruit phenologyfruit photosynthesisMelastomataceaeMiconia albicansPREMISE OF THE STUDY: Most bird-dispersed fruits are green when unripe and become colored and conspicuous when ripe, signaling that fruits are ready to be consumed and dispersed. The color pattern for fruits of Miconia albicans (Melastomataceae), however, is the opposite, with reddish unripe and green ripe fruits. We (1) verified the maintenance over time of its bicolored display, (2) tested the communicative function of unripe fruits, (3) tested the photoprotective role of anthocyanins in unripe fruits, and (4) verified whether green ripe fruits can assimilate carbon. METHODS: Using a paired experiment, we tested whether detection of ripe fruits was higher on infructescences with unripe and ripe fruits compared with infructescences with only ripe fruits. We also measured and compared gas exchange, chlorophyll a fluorescence, and heat dissipation of covered (to prevent anthocyanin synthesis) and uncovered ripe and unripe fruits. KEY RESULTS: Although the bicolored display was maintained over time, unripe fruits had no influence on bird detection and removal of ripe fruits. Ripe and unripe fruits did not assimilate CO2, but they respired instead. CONCLUSIONS: Since the communicative function of unripe fruits was not confirmed, seed dispersers are unlikely to select the display with bicolored fruits. Because of the absence of photosynthetic activity in ripe and unripe fruits and enhanced photoprotective mechanisms in ripe fruits rather than in unripe fruits, we could not confirm the photoprotective role of anthocyanins in unripe fruits. As an alternative hypothesis, we suggest that the bicolored fruit display could be an adaptation to diversify seed dispersal vectors instead of restricting dispersal to birds and that anthocyanins in unripe fruits may have a defense role against pathogens.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Univ Estadual Paulista, Dept Bot, Lab Fenol, Grp Fenol & Dispersao Sementes, BR-13506900 Rio Claro, SP, BrazilUniv Freiburg, Fac Biol, Dept Evolutionary Biol & Anim Ecol, D-79104 Freiburg, GermanyUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Rio Claro, SP, BrazilUniv Estadual Santa Cruz, Dept Ciencias Biol, BR-45662900 Ilheus, BA, BrazilUniv Estadual Paulista, Dept Bot, Lab Fenol, Grp Fenol & Dispersao Sementes, BR-13506900 Rio Claro, SP, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Rio Claro, SP, BrazilFAPESP: 2007/59779-6FAPESP: 2010/51307-0FAPESP: 2010/01762-3FAPESP: 2010/52113-5FAPESP: 2009/54208-6CNPq: 308902/2014-9CNPq: 306243/2010-5FAPESP: 2012/19827-0Botanical Soc Amer IncUniversidade Estadual Paulista (Unesp)Univ FreiburgUniv Estadual Santa CruzCamargo, Maria Gabriela G. de [UNESP]Schaefer, H. MartinHabermann, Gustavo [UNESP]Cazetta, ElianaSoares, Natalia Costa [UNESP]Morellato, Leonor Patricia C. [UNESP]2018-11-26T16:17:00Z2018-11-26T16:17:00Z2015-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1453-1461application/pdfhttp://dx.doi.org/10.3732/ajb.1500138American Journal Of Botany. St Louis: Botanical Soc Amer Inc, v. 102, n. 9, p. 1453-1461, 2015.0002-9122http://hdl.handle.net/11449/16085510.3732/ajb.1500138WOS:000361753900008WOS000361753900008.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAmerican Journal Of Botany1,499info:eu-repo/semantics/openAccess2023-10-07T06:06:26Zoai:repositorio.unesp.br:11449/160855Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-07T06:06:26Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors |
title |
Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors |
spellingShingle |
Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors Camargo, Maria Gabriela G. de [UNESP] anthocyanin photoprotection frugivory fruit contrast fruit phenology fruit photosynthesis Melastomataceae Miconia albicans |
title_short |
Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors |
title_full |
Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors |
title_fullStr |
Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors |
title_full_unstemmed |
Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors |
title_sort |
Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors |
author |
Camargo, Maria Gabriela G. de [UNESP] |
author_facet |
Camargo, Maria Gabriela G. de [UNESP] Schaefer, H. Martin Habermann, Gustavo [UNESP] Cazetta, Eliana Soares, Natalia Costa [UNESP] Morellato, Leonor Patricia C. [UNESP] |
author_role |
author |
author2 |
Schaefer, H. Martin Habermann, Gustavo [UNESP] Cazetta, Eliana Soares, Natalia Costa [UNESP] Morellato, Leonor Patricia C. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Univ Freiburg Univ Estadual Santa Cruz |
dc.contributor.author.fl_str_mv |
Camargo, Maria Gabriela G. de [UNESP] Schaefer, H. Martin Habermann, Gustavo [UNESP] Cazetta, Eliana Soares, Natalia Costa [UNESP] Morellato, Leonor Patricia C. [UNESP] |
dc.subject.por.fl_str_mv |
anthocyanin photoprotection frugivory fruit contrast fruit phenology fruit photosynthesis Melastomataceae Miconia albicans |
topic |
anthocyanin photoprotection frugivory fruit contrast fruit phenology fruit photosynthesis Melastomataceae Miconia albicans |
description |
PREMISE OF THE STUDY: Most bird-dispersed fruits are green when unripe and become colored and conspicuous when ripe, signaling that fruits are ready to be consumed and dispersed. The color pattern for fruits of Miconia albicans (Melastomataceae), however, is the opposite, with reddish unripe and green ripe fruits. We (1) verified the maintenance over time of its bicolored display, (2) tested the communicative function of unripe fruits, (3) tested the photoprotective role of anthocyanins in unripe fruits, and (4) verified whether green ripe fruits can assimilate carbon. METHODS: Using a paired experiment, we tested whether detection of ripe fruits was higher on infructescences with unripe and ripe fruits compared with infructescences with only ripe fruits. We also measured and compared gas exchange, chlorophyll a fluorescence, and heat dissipation of covered (to prevent anthocyanin synthesis) and uncovered ripe and unripe fruits. KEY RESULTS: Although the bicolored display was maintained over time, unripe fruits had no influence on bird detection and removal of ripe fruits. Ripe and unripe fruits did not assimilate CO2, but they respired instead. CONCLUSIONS: Since the communicative function of unripe fruits was not confirmed, seed dispersers are unlikely to select the display with bicolored fruits. Because of the absence of photosynthetic activity in ripe and unripe fruits and enhanced photoprotective mechanisms in ripe fruits rather than in unripe fruits, we could not confirm the photoprotective role of anthocyanins in unripe fruits. As an alternative hypothesis, we suggest that the bicolored fruit display could be an adaptation to diversify seed dispersal vectors instead of restricting dispersal to birds and that anthocyanins in unripe fruits may have a defense role against pathogens. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-01 2018-11-26T16:17:00Z 2018-11-26T16:17:00Z |
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/10.3732/ajb.1500138 American Journal Of Botany. St Louis: Botanical Soc Amer Inc, v. 102, n. 9, p. 1453-1461, 2015. 0002-9122 http://hdl.handle.net/11449/160855 10.3732/ajb.1500138 WOS:000361753900008 WOS000361753900008.pdf |
url |
http://dx.doi.org/10.3732/ajb.1500138 http://hdl.handle.net/11449/160855 |
identifier_str_mv |
American Journal Of Botany. St Louis: Botanical Soc Amer Inc, v. 102, n. 9, p. 1453-1461, 2015. 0002-9122 10.3732/ajb.1500138 WOS:000361753900008 WOS000361753900008.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
American Journal Of Botany 1,499 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1453-1461 application/pdf |
dc.publisher.none.fl_str_mv |
Botanical Soc Amer Inc |
publisher.none.fl_str_mv |
Botanical Soc Amer Inc |
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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1803649343138299904 |