Bicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colors

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dc.contributor.authorCamargo, Maria Gabriela G. de [UNESP]
dc.contributor.authorSchaefer, H. Martin
dc.contributor.authorHabermann, Gustavo [UNESP]
dc.contributor.authorCazetta, Eliana
dc.contributor.authorSoares, Natalia Costa [UNESP]
dc.contributor.authorMorellato, Leonor Patricia C. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Freiburg
dc.contributor.institutionUniv Estadual Santa Cruz
dc.date.accessioned2018-11-26T16:17:00Z
dc.date.available2018-11-26T16:17:00Z
dc.date.issued2015-09-01
dc.description.abstractPREMISE 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.en
dc.description.affiliationUniv Estadual Paulista, Dept Bot, Lab Fenol, Grp Fenol & Dispersao Sementes, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUniv Freiburg, Fac Biol, Dept Evolutionary Biol & Anim Ecol, D-79104 Freiburg, Germany
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUniv Estadual Santa Cruz, Dept Ciencias Biol, BR-45662900 Ilheus, BA, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Bot, Lab Fenol, Grp Fenol & Dispersao Sementes, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Rio Claro, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFAPESP: 2007/59779-6
dc.description.sponsorshipIdFAPESP: 2010/51307-0
dc.description.sponsorshipIdFAPESP: 2010/01762-3
dc.description.sponsorshipIdFAPESP: 2010/52113-5
dc.description.sponsorshipIdFAPESP: 2009/54208-6
dc.description.sponsorshipIdCNPq: 308902/2014-9
dc.description.sponsorshipIdCNPq: 306243/2010-5
dc.description.sponsorshipIdFAPESP: 2012/19827-0
dc.format.extent1453-1461
dc.identifierhttp://dx.doi.org/10.3732/ajb.1500138
dc.identifier.citationAmerican Journal Of Botany. St Louis: Botanical Soc Amer Inc, v. 102, n. 9, p. 1453-1461, 2015.
dc.identifier.doi10.3732/ajb.1500138
dc.identifier.fileWOS000361753900008.pdf
dc.identifier.issn0002-9122
dc.identifier.urihttp://hdl.handle.net/11449/160855
dc.identifier.wosWOS:000361753900008
dc.language.isoeng
dc.publisherBotanical Soc Amer Inc
dc.relation.ispartofAmerican Journal Of Botany
dc.relation.ispartofsjr1,499
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectanthocyanin photoprotection
dc.subjectfrugivory
dc.subjectfruit contrast
dc.subjectfruit phenology
dc.subjectfruit photosynthesis
dc.subjectMelastomataceae
dc.subjectMiconia albicans
dc.titleBicolored display of Miconia albicans fruits: Evaluating visual and physiological functions of fruit colorsen
dc.typeArtigo
dcterms.rightsHolderBotanical Soc Amer Inc
unesp.author.orcid0000-0002-2209-2554[4]

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