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Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)

Bibliographic Details
Main Author: León-Cisneros, Karla
Publication Date: 2011
Other Authors: Nogueira, Eunice M., Riosmena-Rodriguez, Rafael, Neto, Ana I.
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10400.3/2028
Summary: The life-cycle of Scinaia interrupta (A.P. de Candolle) M. J. Wynne was investigated in vitro using four irradiance regimes: 4, 8, 12 and 16 μmol photons mˉ² sˉ¹. A triphasic heteromorphic life-cycle was observed. Carpospores released by cystocarps of gametophytes collected in the field developed into filamentous tetrasporophytes, which produced tetrahedral tetrasporangia. Tetrasporangial development was accelerated under higher irradiance levels. Tetraspores germinated into filamentous protonemal gametophytes, initially identical to the tetrasporophyte. Filamentous gametophytes developed apical utricles and gave rise directly to the fleshy gametophyte. Further development of the fleshy gametophyte was not observed at the lowest irradiance regime (4 μmol photons mˉ² sˉ¹). The present study reports for the first time the influence of the irradiance regime on the initial tetrasporangial development and in the development of the fleshy gametophyte, and reinforces the importance of light intensity on Scinaia life-cycle. Production of apical utricles by the filamentous gametophyte is newly reported for the genus.
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spelling Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)Filamentous TetrasporophyteFilamentous Protonemal GametophyteIn Vitro Life-History StudiesIrradiance RegimesNew Development PhaseScinaiaThe life-cycle of Scinaia interrupta (A.P. de Candolle) M. J. Wynne was investigated in vitro using four irradiance regimes: 4, 8, 12 and 16 μmol photons mˉ² sˉ¹. A triphasic heteromorphic life-cycle was observed. Carpospores released by cystocarps of gametophytes collected in the field developed into filamentous tetrasporophytes, which produced tetrahedral tetrasporangia. Tetrasporangial development was accelerated under higher irradiance levels. Tetraspores germinated into filamentous protonemal gametophytes, initially identical to the tetrasporophyte. Filamentous gametophytes developed apical utricles and gave rise directly to the fleshy gametophyte. Further development of the fleshy gametophyte was not observed at the lowest irradiance regime (4 μmol photons mˉ² sˉ¹). The present study reports for the first time the influence of the irradiance regime on the initial tetrasporangial development and in the development of the fleshy gametophyte, and reinforces the importance of light intensity on Scinaia life-cycle. Production of apical utricles by the filamentous gametophyte is newly reported for the genus.Springer Science+Business MediaRepositório da Universidade dos AçoresLeón-Cisneros, KarlaNogueira, Eunice M.Riosmena-Rodriguez, RafaelNeto, Ana I.2013-06-05T10:35:39Z20112011-06-29T15:28:48Z2011-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.3/2028eng0921-8971 (Print)1573-5176 (Online)info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-07T10:09:24Zoai:repositorio.uac.pt:10400.3/2028Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T00:41:40.859946Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)
title Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)
spellingShingle Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)
León-Cisneros, Karla
Filamentous Tetrasporophyte
Filamentous Protonemal Gametophyte
In Vitro Life-History Studies
Irradiance Regimes
New Development Phase
Scinaia
title_short Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)
title_full Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)
title_fullStr Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)
title_full_unstemmed Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)
title_sort Life-cycle of Scinaia interrupta (Nemaliales, Rhodophyta)
author León-Cisneros, Karla
author_facet León-Cisneros, Karla
Nogueira, Eunice M.
Riosmena-Rodriguez, Rafael
Neto, Ana I.
author_role author
author2 Nogueira, Eunice M.
Riosmena-Rodriguez, Rafael
Neto, Ana I.
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade dos Açores
dc.contributor.author.fl_str_mv León-Cisneros, Karla
Nogueira, Eunice M.
Riosmena-Rodriguez, Rafael
Neto, Ana I.
dc.subject.por.fl_str_mv Filamentous Tetrasporophyte
Filamentous Protonemal Gametophyte
In Vitro Life-History Studies
Irradiance Regimes
New Development Phase
Scinaia
topic Filamentous Tetrasporophyte
Filamentous Protonemal Gametophyte
In Vitro Life-History Studies
Irradiance Regimes
New Development Phase
Scinaia
description The life-cycle of Scinaia interrupta (A.P. de Candolle) M. J. Wynne was investigated in vitro using four irradiance regimes: 4, 8, 12 and 16 μmol photons mˉ² sˉ¹. A triphasic heteromorphic life-cycle was observed. Carpospores released by cystocarps of gametophytes collected in the field developed into filamentous tetrasporophytes, which produced tetrahedral tetrasporangia. Tetrasporangial development was accelerated under higher irradiance levels. Tetraspores germinated into filamentous protonemal gametophytes, initially identical to the tetrasporophyte. Filamentous gametophytes developed apical utricles and gave rise directly to the fleshy gametophyte. Further development of the fleshy gametophyte was not observed at the lowest irradiance regime (4 μmol photons mˉ² sˉ¹). The present study reports for the first time the influence of the irradiance regime on the initial tetrasporangial development and in the development of the fleshy gametophyte, and reinforces the importance of light intensity on Scinaia life-cycle. Production of apical utricles by the filamentous gametophyte is newly reported for the genus.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-06-29T15:28:48Z
2011-01-01T00:00:00Z
2013-06-05T10:35:39Z
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://hdl.handle.net/10400.3/2028
url http://hdl.handle.net/10400.3/2028
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0921-8971 (Print)
1573-5176 (Online)
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Science+Business Media
publisher.none.fl_str_mv Springer Science+Business Media
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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