The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx)
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3389/fpls.2019.00336 http://hdl.handle.net/11449/188966 |
Resumo: | Utricularia are carnivorous plants which have small hollow vesicles as suction traps that work underwater by means of negative pressure and watertightness of the entrance for capturing small animal prey. Utricularia multifida and U. westonii have specific thick-walled traps, which are triangular in a transverse section but their functioning is unclear. Some authors suggest that the trap door in U. multifida acts as a simple valve without a suction trapping mechanism. Our main aim was to check the anatomical trap characters that are responsible for possible water outflow and maintaining negative pressure as main functional parts of the active trap suction mechanism in both species. Using different microscopic techniques, we investigated the ultrastructure of external trap glands, quadrifids, glands near the entrance (bifids, monofids), and also pavement epithelium. Quadrifids of both species have a similar structure to those known in other species from the genus, which possess the suction trap mechanism. Glands near the entrance in U. multifida and U. westonii, which are responsible for water pumping in other species, are typically developed as in other species in the genus and have pedestal cells which are transfer cells. The transfer cells also occur in glands of the pavement epithelium, which is again typically developed as in other species in the genus. Simple biophysical tests did not confirm reliably neither the negative underpressure formation in the traps nor the watertightness of the entrance in both species. Our anatomical results indirectly support the hypothesis that both species have suction traps like all other Utricularia species, but the biophysical data rather suggest a passive valve mechanism. |
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The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx)Australian plant speciesCarnivorous plantsLentibulariaceaePolypompholyxTransfer cellsTrap functionUltrastructureUtricularia are carnivorous plants which have small hollow vesicles as suction traps that work underwater by means of negative pressure and watertightness of the entrance for capturing small animal prey. Utricularia multifida and U. westonii have specific thick-walled traps, which are triangular in a transverse section but their functioning is unclear. Some authors suggest that the trap door in U. multifida acts as a simple valve without a suction trapping mechanism. Our main aim was to check the anatomical trap characters that are responsible for possible water outflow and maintaining negative pressure as main functional parts of the active trap suction mechanism in both species. Using different microscopic techniques, we investigated the ultrastructure of external trap glands, quadrifids, glands near the entrance (bifids, monofids), and also pavement epithelium. Quadrifids of both species have a similar structure to those known in other species from the genus, which possess the suction trap mechanism. Glands near the entrance in U. multifida and U. westonii, which are responsible for water pumping in other species, are typically developed as in other species in the genus and have pedestal cells which are transfer cells. The transfer cells also occur in glands of the pavement epithelium, which is again typically developed as in other species in the genus. Simple biophysical tests did not confirm reliably neither the negative underpressure formation in the traps nor the watertightness of the entrance in both species. Our anatomical results indirectly support the hypothesis that both species have suction traps like all other Utricularia species, but the biophysical data rather suggest a passive valve mechanism.Akademie Věd České RepublikyCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Department of Plant Cytology and Embryology Institute of Botany Jagiellonian UniversityDepartment of Animal Histology and Embryology University of Silesia in KatowiceInstitute of Botany of the Czech Academy of SciencesDepartamento de Biologia Aplicada à Agropecuária Faculdade de Ciências Agrárias e Veterinárias UNESP – São Paulo State UniversityDepartamento de Biologia Aplicada à Agropecuária Faculdade de Ciências Agrárias e Veterinárias UNESP – São Paulo State UniversityAkademie Věd České Republiky: RVO 6798593Jagiellonian UniversityUniversity of Silesia in KatowiceInstitute of Botany of the Czech Academy of SciencesUniversidade Estadual Paulista (Unesp)Płachno, Bartosz J.Świątek, PiotrAdamec, LubomírCarvalho, Samanta [UNESP]Miranda, Vitor F. O. [UNESP]2019-10-06T16:25:30Z2019-10-06T16:25:30Z2019-03-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3389/fpls.2019.00336Frontiers in Plant Science, v. 10.1664-462Xhttp://hdl.handle.net/11449/18896610.3389/fpls.2019.003362-s2.0-85064228953Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFrontiers in Plant Scienceinfo:eu-repo/semantics/openAccess2021-10-23T20:18:34Zoai:repositorio.unesp.br:11449/188966Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T20:18:34Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx) |
title |
The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx) |
spellingShingle |
The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx) Płachno, Bartosz J. Australian plant species Carnivorous plants Lentibulariaceae Polypompholyx Transfer cells Trap function Ultrastructure |
title_short |
The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx) |
title_full |
The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx) |
title_fullStr |
The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx) |
title_full_unstemmed |
The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx) |
title_sort |
The trap architecture of Utricularia multifida and Utricularia westonii (subg. Polypompholyx) |
author |
Płachno, Bartosz J. |
author_facet |
Płachno, Bartosz J. Świątek, Piotr Adamec, Lubomír Carvalho, Samanta [UNESP] Miranda, Vitor F. O. [UNESP] |
author_role |
author |
author2 |
Świątek, Piotr Adamec, Lubomír Carvalho, Samanta [UNESP] Miranda, Vitor F. O. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Jagiellonian University University of Silesia in Katowice Institute of Botany of the Czech Academy of Sciences Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Płachno, Bartosz J. Świątek, Piotr Adamec, Lubomír Carvalho, Samanta [UNESP] Miranda, Vitor F. O. [UNESP] |
dc.subject.por.fl_str_mv |
Australian plant species Carnivorous plants Lentibulariaceae Polypompholyx Transfer cells Trap function Ultrastructure |
topic |
Australian plant species Carnivorous plants Lentibulariaceae Polypompholyx Transfer cells Trap function Ultrastructure |
description |
Utricularia are carnivorous plants which have small hollow vesicles as suction traps that work underwater by means of negative pressure and watertightness of the entrance for capturing small animal prey. Utricularia multifida and U. westonii have specific thick-walled traps, which are triangular in a transverse section but their functioning is unclear. Some authors suggest that the trap door in U. multifida acts as a simple valve without a suction trapping mechanism. Our main aim was to check the anatomical trap characters that are responsible for possible water outflow and maintaining negative pressure as main functional parts of the active trap suction mechanism in both species. Using different microscopic techniques, we investigated the ultrastructure of external trap glands, quadrifids, glands near the entrance (bifids, monofids), and also pavement epithelium. Quadrifids of both species have a similar structure to those known in other species from the genus, which possess the suction trap mechanism. Glands near the entrance in U. multifida and U. westonii, which are responsible for water pumping in other species, are typically developed as in other species in the genus and have pedestal cells which are transfer cells. The transfer cells also occur in glands of the pavement epithelium, which is again typically developed as in other species in the genus. Simple biophysical tests did not confirm reliably neither the negative underpressure formation in the traps nor the watertightness of the entrance in both species. Our anatomical results indirectly support the hypothesis that both species have suction traps like all other Utricularia species, but the biophysical data rather suggest a passive valve mechanism. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:25:30Z 2019-10-06T16:25:30Z 2019-03-22 |
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/10.3389/fpls.2019.00336 Frontiers in Plant Science, v. 10. 1664-462X http://hdl.handle.net/11449/188966 10.3389/fpls.2019.00336 2-s2.0-85064228953 |
url |
http://dx.doi.org/10.3389/fpls.2019.00336 http://hdl.handle.net/11449/188966 |
identifier_str_mv |
Frontiers in Plant Science, v. 10. 1664-462X 10.3389/fpls.2019.00336 2-s2.0-85064228953 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Frontiers in Plant Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
|
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1799964663169941504 |