Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus
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/10.1086/696824 http://hdl.handle.net/11449/164142 |
Resumo: | Premise of research.Dichogamy is a common feature in early-divergent angiosperms, as in Piper, and is related to the effectiveness of pollination. To better understand the sexual reproduction in Piper species, we determined whether there is a pattern of pollen release and stigmatic exposure in Neotropical species of this genus, independent of flower sexuality and the number of stamens and carpels.Methodology.We studied 16 Neotropical Piper species, which have flowers with different numbers of stamens and carpels. We analyzed the floral events, in the field and in the laboratory, from bud to senescent flowers.Pivotal results.Twelve species had only bisexual flowers, and four species had bisexual plus staminate flowers. The bisexual flowers of all the analyzed species showed incomplete protogyny: the pistillate phase of flowers lasted from 2 to 7 d, and the bisexual phase lasted from 1 to 9 d. The stigmas were long-lived (4-16 d), and the stigmatic papillae were exposed sequentially and gradually in a basipetal direction, regardless of the number of carpels in the flower. Anther dehiscence was asynchronous and sequential, occurring in one stamen at a time, regardless of the number of stamens and flower sexuality.Conclusions.The dynamic of floral events (sequential and gradual exposure and senescence of stigmas in a basipetal direction, and asynchronous and sequential pollen release) suggests a pattern for Neotropical Piper species, considering that the analyzed species belong to different clades of the genus. In addition, these characteristics may also represent a pattern for the genus as a whole, as the floral development and morphology of bisexual and unisexual flowers are similar. |
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Repositório Institucional da UNESP |
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Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genusasynchronous pollen releasedichogamyincomplete protogynystigmatic longevityPremise of research.Dichogamy is a common feature in early-divergent angiosperms, as in Piper, and is related to the effectiveness of pollination. To better understand the sexual reproduction in Piper species, we determined whether there is a pattern of pollen release and stigmatic exposure in Neotropical species of this genus, independent of flower sexuality and the number of stamens and carpels.Methodology.We studied 16 Neotropical Piper species, which have flowers with different numbers of stamens and carpels. We analyzed the floral events, in the field and in the laboratory, from bud to senescent flowers.Pivotal results.Twelve species had only bisexual flowers, and four species had bisexual plus staminate flowers. The bisexual flowers of all the analyzed species showed incomplete protogyny: the pistillate phase of flowers lasted from 2 to 7 d, and the bisexual phase lasted from 1 to 9 d. The stigmas were long-lived (4-16 d), and the stigmatic papillae were exposed sequentially and gradually in a basipetal direction, regardless of the number of carpels in the flower. Anther dehiscence was asynchronous and sequential, occurring in one stamen at a time, regardless of the number of stamens and flower sexuality.Conclusions.The dynamic of floral events (sequential and gradual exposure and senescence of stigmas in a basipetal direction, and asynchronous and sequential pollen release) suggests a pattern for Neotropical Piper species, considering that the analyzed species belong to different clades of the genus. In addition, these characteristics may also represent a pattern for the genus as a whole, as the floral development and morphology of bisexual and unisexual flowers are similar.Brazilian National Council for Scientific and Technological DevelopmentCoordination for the Improvement of Higher Education PersonnelUniv Estadual Paulista, Grad Program Biol Sci Bot, BR-18618689 Botucatu, SP, BrazilUniv Fed Sao Carlos, Dept Bot, BR-13565905 Sao Carlos, SP, BrazilUniv Estadual Paulista, Inst Biosci, Dept Bot, BR-18618689 Botucatu, SP, BrazilUniv Estadual Paulista, Grad Program Biol Sci Bot, BR-18618689 Botucatu, SP, BrazilUniv Estadual Paulista, Inst Biosci, Dept Bot, BR-18618689 Botucatu, SP, BrazilBrazilian National Council for Scientific and Technological Development: 305912/2013-5Univ Chicago PressUniversidade Estadual Paulista (Unesp)Universidade Federal de São Carlos (UFSCar)Valentin-Silva, Adriano [UNESP]Batalha, Marco AntonioGuimaraes, Elza [UNESP]2018-11-26T17:49:16Z2018-11-26T17:49:16Z2018-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article287-295application/pdfhttp://dx.doi.org/10.1086/696824International Journal Of Plant Sciences. Chicago: Univ Chicago Press, v. 179, n. 4, p. 287-295, 2018.1058-5893http://hdl.handle.net/11449/16414210.1086/696824WOS:000431027000003WOS000431027000003.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal Of Plant Sciences0,798info:eu-repo/semantics/openAccess2023-10-22T06:06:21Zoai:repositorio.unesp.br:11449/164142Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:35:22.825799Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus |
title |
Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus |
spellingShingle |
Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus Valentin-Silva, Adriano [UNESP] asynchronous pollen release dichogamy incomplete protogyny stigmatic longevity |
title_short |
Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus |
title_full |
Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus |
title_fullStr |
Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus |
title_full_unstemmed |
Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus |
title_sort |
Dynamics of Pollen Release and Stigmatic Exposure in Neotropical Piper Species: A Possible Pattern for the Genus |
author |
Valentin-Silva, Adriano [UNESP] |
author_facet |
Valentin-Silva, Adriano [UNESP] Batalha, Marco Antonio Guimaraes, Elza [UNESP] |
author_role |
author |
author2 |
Batalha, Marco Antonio Guimaraes, Elza [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de São Carlos (UFSCar) |
dc.contributor.author.fl_str_mv |
Valentin-Silva, Adriano [UNESP] Batalha, Marco Antonio Guimaraes, Elza [UNESP] |
dc.subject.por.fl_str_mv |
asynchronous pollen release dichogamy incomplete protogyny stigmatic longevity |
topic |
asynchronous pollen release dichogamy incomplete protogyny stigmatic longevity |
description |
Premise of research.Dichogamy is a common feature in early-divergent angiosperms, as in Piper, and is related to the effectiveness of pollination. To better understand the sexual reproduction in Piper species, we determined whether there is a pattern of pollen release and stigmatic exposure in Neotropical species of this genus, independent of flower sexuality and the number of stamens and carpels.Methodology.We studied 16 Neotropical Piper species, which have flowers with different numbers of stamens and carpels. We analyzed the floral events, in the field and in the laboratory, from bud to senescent flowers.Pivotal results.Twelve species had only bisexual flowers, and four species had bisexual plus staminate flowers. The bisexual flowers of all the analyzed species showed incomplete protogyny: the pistillate phase of flowers lasted from 2 to 7 d, and the bisexual phase lasted from 1 to 9 d. The stigmas were long-lived (4-16 d), and the stigmatic papillae were exposed sequentially and gradually in a basipetal direction, regardless of the number of carpels in the flower. Anther dehiscence was asynchronous and sequential, occurring in one stamen at a time, regardless of the number of stamens and flower sexuality.Conclusions.The dynamic of floral events (sequential and gradual exposure and senescence of stigmas in a basipetal direction, and asynchronous and sequential pollen release) suggests a pattern for Neotropical Piper species, considering that the analyzed species belong to different clades of the genus. In addition, these characteristics may also represent a pattern for the genus as a whole, as the floral development and morphology of bisexual and unisexual flowers are similar. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-26T17:49:16Z 2018-11-26T17:49:16Z 2018-05-01 |
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/10.1086/696824 International Journal Of Plant Sciences. Chicago: Univ Chicago Press, v. 179, n. 4, p. 287-295, 2018. 1058-5893 http://hdl.handle.net/11449/164142 10.1086/696824 WOS:000431027000003 WOS000431027000003.pdf |
url |
http://dx.doi.org/10.1086/696824 http://hdl.handle.net/11449/164142 |
identifier_str_mv |
International Journal Of Plant Sciences. Chicago: Univ Chicago Press, v. 179, n. 4, p. 287-295, 2018. 1058-5893 10.1086/696824 WOS:000431027000003 WOS000431027000003.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal Of Plant Sciences 0,798 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
287-295 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Chicago Press |
publisher.none.fl_str_mv |
Univ Chicago Press |
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 |
|
_version_ |
1808128537451823104 |