A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture

Sexual reproduction of Gymnodinium nolleri (Ellegaard & Moestrup 1999) was studied by intercrossing experiments in all combinations of six clonal strains and backcrossing of five clonal F1 offspring. The results indicated that the conjugation of G. nolleri responded to the existence of more than...

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Detalles Bibliográficos
Autor: Figueroa, Rosa Isabel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2005
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/324096
Acceso en línea:http://hdl.handle.net/10261/324096
Access Level:acceso abierto
Palabra clave:Dinophyceae
Centro Oceanográfico de Vigo
Medio Marino
encystment
gametes
Gymnodinium nolleri
Life cycle
Reproduction
fish
sexual reproduction
strains
reproduction
biological poisons
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oai_identifier_str oai:digital.csic.es:10261/324096
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repository_id_str
spelling A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in cultureFigueroa, Rosa IsabelDinophyceaeCentro Oceanográfico de VigoMedio MarinoencystmentgametesGymnodinium nolleriLife cycleReproductionfishsexual reproductionstrainsreproductionbiological poisonsSexual reproduction of Gymnodinium nolleri (Ellegaard & Moestrup 1999) was studied by intercrossing experiments in all combinations of six clonal strains and backcrossing of five clonal F1 offspring. The results indicated that the conjugation of G. nolleri responded to the existence of more than two sexual types (complex heterothallism) and that compatibility between progeny of one cyst (inbreeding) was the rule. Sexual fusion, planozygote formation and development, cyst formation, and germination and planomeiocyte division were followed using time-lapse photography. This study revealed many similarities between the sexual stages and life cycle pattern of G. nolleri and the related G. catenatum and the existence under culture conditions of an alternative cycle between vegetative cells and zygotes without a hypnozygote stage. The fate of zygotes, division or encystment, was influenced by the nutritional status of the external medium. The division of G. nolleri planozygotes was promoted by high levels of external nutrients, whereas the maximum percentage of encystment was recorded when phosphates were reduced in the isolation medium. The division of zygotes might be different from both vegetative and planomeiocyte division because it resulted in two-cell chains with the cells not oriented in parallel.SIBravo, I. (Isabel)202320232005info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/324096reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Vigoinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3240962026-05-22T06:33:51Z
dc.title.none.fl_str_mv A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture
title A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture
spellingShingle A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture
Figueroa, Rosa Isabel
Dinophyceae
Centro Oceanográfico de Vigo
Medio Marino
encystment
gametes
Gymnodinium nolleri
Life cycle
Reproduction
fish
sexual reproduction
strains
reproduction
biological poisons
title_short A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture
title_full A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture
title_fullStr A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture
title_full_unstemmed A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture
title_sort A study of the sexual reproduction and determination of mating type of gymnodinium nolleri (Dinophyceae) in culture
dc.creator.none.fl_str_mv Figueroa, Rosa Isabel
author Figueroa, Rosa Isabel
author_facet Figueroa, Rosa Isabel
author_role author
dc.contributor.none.fl_str_mv Bravo, I. (Isabel)
dc.subject.none.fl_str_mv Dinophyceae
Centro Oceanográfico de Vigo
Medio Marino
encystment
gametes
Gymnodinium nolleri
Life cycle
Reproduction
fish
sexual reproduction
strains
reproduction
biological poisons
topic Dinophyceae
Centro Oceanográfico de Vigo
Medio Marino
encystment
gametes
Gymnodinium nolleri
Life cycle
Reproduction
fish
sexual reproduction
strains
reproduction
biological poisons
description Sexual reproduction of Gymnodinium nolleri (Ellegaard & Moestrup 1999) was studied by intercrossing experiments in all combinations of six clonal strains and backcrossing of five clonal F1 offspring. The results indicated that the conjugation of G. nolleri responded to the existence of more than two sexual types (complex heterothallism) and that compatibility between progeny of one cyst (inbreeding) was the rule. Sexual fusion, planozygote formation and development, cyst formation, and germination and planomeiocyte division were followed using time-lapse photography. This study revealed many similarities between the sexual stages and life cycle pattern of G. nolleri and the related G. catenatum and the existence under culture conditions of an alternative cycle between vegetative cells and zygotes without a hypnozygote stage. The fate of zygotes, division or encystment, was influenced by the nutritional status of the external medium. The division of G. nolleri planozygotes was promoted by high levels of external nutrients, whereas the maximum percentage of encystment was recorded when phosphates were reduced in the isolation medium. The division of zygotes might be different from both vegetative and planomeiocyte division because it resulted in two-cell chains with the cells not oriented in parallel.
publishDate 2005
dc.date.none.fl_str_mv 2005
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/324096
url http://hdl.handle.net/10261/324096
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869415260941713408
score 15,81155

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