Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina

Autores
Gauna, Maria Cecilia; Parodi, Elisa Rosalia; Caceres, Eduardo Jorge
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The occurrence of the epiphyte alga Pseudendoclonium submarinum Wille (Ulvophyceae) on Rhodymenia pseudopalmata (Lamouroux) Silva (Rhodophyta) is reported. The present study describes a first line of evidence of an epidemiological study conducted with the purpose of comparing both the prevalence and effects of algal epiphytic organisms in R. pseudopalmata in the Patagonian coasts of Argentina. P. submarinum infected approximately 80% of R. pseudopalmata thalli and the frequency of infection was variable in connection with different areas of the host's thalli: 42% of R. pseudopalmata fronds presented P. submarinum thalli in the basal region, which presented a severity degree of infection from low to high. The median region presented an average frequency of infection of 30% and minor susceptibility to colonization. The covering varied from 1% to 70% representing a low to moderate degree of colonization. The apical region presented a cover frequency of 28% and the level of infection varied between low to moderate. The developmental morphology and the growth dynamics of the epiphyte were also investigated under unialgal as well as bialgal culture conditions. In nature, thalli of P. submarinum on R. pseudopalmata never invaded internal tissues of the host. Vegetative thalli of P. submarinum were inoculated on fronds R. pseudopalmata. Experimental infections confirmed that P. submarinum thalli did not penetrate the host's fronds. P. submarinum swarmers showed the capacity of settlement on a host's fronds and developed an epiphytic monostromatic thallus. The results allowed us to suggest that P. submarinum uses the R. pseudopalmata thalli as a proper substrate, since Pseudendoclonium thalli complete the entire life cycle. Culture experiments revealed that P. submarinum could develop without the presence of the host and evidenced the nutritional independence, being the relationship in nature, probably triggered by an ecological advantage since fronds of R. pseudopalmata offer a suitable substratum.
Fil: Gauna, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
Fil: Parodi, Elisa Rosalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
Fil: Caceres, Eduardo Jorge. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Laboratorio de Ficología y Micología; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Materia
Algal Epiphytism
Pseudendoclonium
Rhodymenia
Symbiosis
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/27941
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/27941
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network_name_str CONICET Digital (CONICET)
spelling Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of ArgentinaGauna, Maria CeciliaParodi, Elisa RosaliaCaceres, Eduardo JorgeAlgal EpiphytismPseudendocloniumRhodymeniaSymbiosishttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The occurrence of the epiphyte alga Pseudendoclonium submarinum Wille (Ulvophyceae) on Rhodymenia pseudopalmata (Lamouroux) Silva (Rhodophyta) is reported. The present study describes a first line of evidence of an epidemiological study conducted with the purpose of comparing both the prevalence and effects of algal epiphytic organisms in R. pseudopalmata in the Patagonian coasts of Argentina. P. submarinum infected approximately 80% of R. pseudopalmata thalli and the frequency of infection was variable in connection with different areas of the host's thalli: 42% of R. pseudopalmata fronds presented P. submarinum thalli in the basal region, which presented a severity degree of infection from low to high. The median region presented an average frequency of infection of 30% and minor susceptibility to colonization. The covering varied from 1% to 70% representing a low to moderate degree of colonization. The apical region presented a cover frequency of 28% and the level of infection varied between low to moderate. The developmental morphology and the growth dynamics of the epiphyte were also investigated under unialgal as well as bialgal culture conditions. In nature, thalli of P. submarinum on R. pseudopalmata never invaded internal tissues of the host. Vegetative thalli of P. submarinum were inoculated on fronds R. pseudopalmata. Experimental infections confirmed that P. submarinum thalli did not penetrate the host's fronds. P. submarinum swarmers showed the capacity of settlement on a host's fronds and developed an epiphytic monostromatic thallus. The results allowed us to suggest that P. submarinum uses the R. pseudopalmata thalli as a proper substrate, since Pseudendoclonium thalli complete the entire life cycle. Culture experiments revealed that P. submarinum could develop without the presence of the host and evidenced the nutritional independence, being the relationship in nature, probably triggered by an ecological advantage since fronds of R. pseudopalmata offer a suitable substratum.Fil: Gauna, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; ArgentinaFil: Parodi, Elisa Rosalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; ArgentinaFil: Caceres, Eduardo Jorge. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Laboratorio de Ficología y Micología; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaWiley2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/27941Gauna, Maria Cecilia; Parodi, Elisa Rosalia; Caceres, Eduardo Jorge; Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina; Wiley; Phycological Research; 57; 4; 12-2009; 313-3221322-0829CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1440-1835.2009.00551.xinfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1440-1835.2009.00551.x/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:21Zoai:ri.conicet.gov.ar:11336/27941instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:15:22.127CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
title Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
spellingShingle Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
Gauna, Maria Cecilia
Algal Epiphytism
Pseudendoclonium
Rhodymenia
Symbiosis
title_short Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
title_full Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
title_fullStr Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
title_full_unstemmed Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
title_sort Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
dc.creator.none.fl_str_mv Gauna, Maria Cecilia
Parodi, Elisa Rosalia
Caceres, Eduardo Jorge
author Gauna, Maria Cecilia
author_facet Gauna, Maria Cecilia
Parodi, Elisa Rosalia
Caceres, Eduardo Jorge
author_role author
author2 Parodi, Elisa Rosalia
Caceres, Eduardo Jorge
author2_role author
author
dc.subject.none.fl_str_mv Algal Epiphytism
Pseudendoclonium
Rhodymenia
Symbiosis
topic Algal Epiphytism
Pseudendoclonium
Rhodymenia
Symbiosis
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The occurrence of the epiphyte alga Pseudendoclonium submarinum Wille (Ulvophyceae) on Rhodymenia pseudopalmata (Lamouroux) Silva (Rhodophyta) is reported. The present study describes a first line of evidence of an epidemiological study conducted with the purpose of comparing both the prevalence and effects of algal epiphytic organisms in R. pseudopalmata in the Patagonian coasts of Argentina. P. submarinum infected approximately 80% of R. pseudopalmata thalli and the frequency of infection was variable in connection with different areas of the host's thalli: 42% of R. pseudopalmata fronds presented P. submarinum thalli in the basal region, which presented a severity degree of infection from low to high. The median region presented an average frequency of infection of 30% and minor susceptibility to colonization. The covering varied from 1% to 70% representing a low to moderate degree of colonization. The apical region presented a cover frequency of 28% and the level of infection varied between low to moderate. The developmental morphology and the growth dynamics of the epiphyte were also investigated under unialgal as well as bialgal culture conditions. In nature, thalli of P. submarinum on R. pseudopalmata never invaded internal tissues of the host. Vegetative thalli of P. submarinum were inoculated on fronds R. pseudopalmata. Experimental infections confirmed that P. submarinum thalli did not penetrate the host's fronds. P. submarinum swarmers showed the capacity of settlement on a host's fronds and developed an epiphytic monostromatic thallus. The results allowed us to suggest that P. submarinum uses the R. pseudopalmata thalli as a proper substrate, since Pseudendoclonium thalli complete the entire life cycle. Culture experiments revealed that P. submarinum could develop without the presence of the host and evidenced the nutritional independence, being the relationship in nature, probably triggered by an ecological advantage since fronds of R. pseudopalmata offer a suitable substratum.
Fil: Gauna, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
Fil: Parodi, Elisa Rosalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
Fil: Caceres, Eduardo Jorge. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Laboratorio de Ficología y Micología; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
description The occurrence of the epiphyte alga Pseudendoclonium submarinum Wille (Ulvophyceae) on Rhodymenia pseudopalmata (Lamouroux) Silva (Rhodophyta) is reported. The present study describes a first line of evidence of an epidemiological study conducted with the purpose of comparing both the prevalence and effects of algal epiphytic organisms in R. pseudopalmata in the Patagonian coasts of Argentina. P. submarinum infected approximately 80% of R. pseudopalmata thalli and the frequency of infection was variable in connection with different areas of the host's thalli: 42% of R. pseudopalmata fronds presented P. submarinum thalli in the basal region, which presented a severity degree of infection from low to high. The median region presented an average frequency of infection of 30% and minor susceptibility to colonization. The covering varied from 1% to 70% representing a low to moderate degree of colonization. The apical region presented a cover frequency of 28% and the level of infection varied between low to moderate. The developmental morphology and the growth dynamics of the epiphyte were also investigated under unialgal as well as bialgal culture conditions. In nature, thalli of P. submarinum on R. pseudopalmata never invaded internal tissues of the host. Vegetative thalli of P. submarinum were inoculated on fronds R. pseudopalmata. Experimental infections confirmed that P. submarinum thalli did not penetrate the host's fronds. P. submarinum swarmers showed the capacity of settlement on a host's fronds and developed an epiphytic monostromatic thallus. The results allowed us to suggest that P. submarinum uses the R. pseudopalmata thalli as a proper substrate, since Pseudendoclonium thalli complete the entire life cycle. Culture experiments revealed that P. submarinum could develop without the presence of the host and evidenced the nutritional independence, being the relationship in nature, probably triggered by an ecological advantage since fronds of R. pseudopalmata offer a suitable substratum.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/27941
Gauna, Maria Cecilia; Parodi, Elisa Rosalia; Caceres, Eduardo Jorge; Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina; Wiley; Phycological Research; 57; 4; 12-2009; 313-322
1322-0829
CONICET Digital
CONICET
url http://hdl.handle.net/11336/27941
identifier_str_mv Gauna, Maria Cecilia; Parodi, Elisa Rosalia; Caceres, Eduardo Jorge; Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina; Wiley; Phycological Research; 57; 4; 12-2009; 313-322
1322-0829
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1440-1835.2009.00551.x
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1440-1835.2009.00551.x/abstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
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dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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