<i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales...

Autores
Aguilera, Anabella; Aubriot, Luis; Echenique, Ricardo Omar; Donadelli, Jorge Luis; Salerno, Graciela Lidia
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Raphidiopsis mediterranea is a freshwater cyanobacterium that forms toxic blooms in eutrophic water bodies. Factors controlling its proliferation have not been explored in detail. We investigated R. mediterranea autecology by (i) analyzing its dynamics in a hypertrophic shallow lake dominated by Planktothrix agardhii (Oscillatoriales) and its relationship with environmental factors; and (ii) studying the effect of light intensity and phosphate availability on R. mediterranea isolates growing in mono or in co-cultures with P. agardhii. The redundancy analysis demonstrated that water temperature, light, and phosphate concentrations were important driving factors for the seasonal succession of the two species. When grown together with P. agardhii, R. mediterranea growth was strongly promoted under the highest light intensity treatment. On the other hand, in monoalgal cultures under phosphorus starvation, both strains exhibited a significant increase in total alkaline phosphatase activity, and changes in the expression of homologs to phoA-like and phoD genes (members of the Pho regulon). However, R. mediterranea showed higher phosphatase activity than P. agardhii, suggesting greater tolerance to phosphate limitation. Taken together, we conclude that physiological features of R. mediterranea play an important role in the coexistence with P. agardhii under environmental changes.
Facultad de Ciencias Naturales y Museo
Instituto de Limnología "Dr. Raúl A. Ringuelet"
Materia
Ciencias Naturales
Phytoplankton dynamics
Alkaline phosphatase
Cyanobacterial blooms
Eutrophic shallow lake
Pho regulon
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/134709
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/134709
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)Aguilera, AnabellaAubriot, LuisEchenique, Ricardo OmarDonadelli, Jorge LuisSalerno, Graciela LidiaCiencias NaturalesPhytoplankton dynamicsAlkaline phosphataseCyanobacterial bloomsEutrophic shallow lakePho regulon<i>Raphidiopsis mediterranea</i> is a freshwater cyanobacterium that forms toxic blooms in eutrophic water bodies. Factors controlling its proliferation have not been explored in detail. We investigated <i>R. mediterranea</i> autecology by (i) analyzing its dynamics in a hypertrophic shallow lake dominated by <i>Planktothrix agardhii</i> (Oscillatoriales) and its relationship with environmental factors; and (ii) studying the effect of light intensity and phosphate availability on <i>R. mediterranea</i> isolates growing in mono or in co-cultures with <i>P. agardhii</i>. The redundancy analysis demonstrated that water temperature, light, and phosphate concentrations were important driving factors for the seasonal succession of the two species. When grown together with <i>P. agardhii</i>, <i>R. mediterranea</i> growth was strongly promoted under the highest light intensity treatment. On the other hand, in monoalgal cultures under phosphorus starvation, both strains exhibited a significant increase in total alkaline phosphatase activity, and changes in the expression of homologs to <i>phoA</i>-like and <i>phoD</i> genes (members of the Pho regulon). However, <i>R. mediterranea</i> showed higher phosphatase activity than <i>P. agardhii</i>, suggesting greater tolerance to phosphate limitation. Taken together, we conclude that physiological features of <i>R. mediterranea</i> play an important role in the coexistence with <i>P. agardhii</i> under environmental changes.Facultad de Ciencias Naturales y MuseoInstituto de Limnología "Dr. Raúl A. Ringuelet"2019-06-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf145-157http://sedici.unlp.edu.ar/handle/10915/134709enginfo:eu-repo/semantics/altIdentifier/issn/0018-8158info:eu-repo/semantics/altIdentifier/issn/1573-5117info:eu-repo/semantics/altIdentifier/doi/10.1007/s10750-019-04002-5info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T11:03:59Zoai:sedici.unlp.edu.ar:10915/134709Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 11:03:59.768SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)
title <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)
spellingShingle <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)
Aguilera, Anabella
Ciencias Naturales
Phytoplankton dynamics
Alkaline phosphatase
Cyanobacterial blooms
Eutrophic shallow lake
Pho regulon
title_short <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)
title_full <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)
title_fullStr <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)
title_full_unstemmed <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)
title_sort <i>Raphidiopsis mediterranea</i> (Nostocales) exhibits a flexible growth strategy under light and nutrient fluctuations in contrast to <i>Planktothrix agardhii</i> (Oscillatoriales)
dc.creator.none.fl_str_mv Aguilera, Anabella
Aubriot, Luis
Echenique, Ricardo Omar
Donadelli, Jorge Luis
Salerno, Graciela Lidia
author Aguilera, Anabella
author_facet Aguilera, Anabella
Aubriot, Luis
Echenique, Ricardo Omar
Donadelli, Jorge Luis
Salerno, Graciela Lidia
author_role author
author2 Aubriot, Luis
Echenique, Ricardo Omar
Donadelli, Jorge Luis
Salerno, Graciela Lidia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Phytoplankton dynamics
Alkaline phosphatase
Cyanobacterial blooms
Eutrophic shallow lake
Pho regulon
topic Ciencias Naturales
Phytoplankton dynamics
Alkaline phosphatase
Cyanobacterial blooms
Eutrophic shallow lake
Pho regulon
dc.description.none.fl_txt_mv <i>Raphidiopsis mediterranea</i> is a freshwater cyanobacterium that forms toxic blooms in eutrophic water bodies. Factors controlling its proliferation have not been explored in detail. We investigated <i>R. mediterranea</i> autecology by (i) analyzing its dynamics in a hypertrophic shallow lake dominated by <i>Planktothrix agardhii</i> (Oscillatoriales) and its relationship with environmental factors; and (ii) studying the effect of light intensity and phosphate availability on <i>R. mediterranea</i> isolates growing in mono or in co-cultures with <i>P. agardhii</i>. The redundancy analysis demonstrated that water temperature, light, and phosphate concentrations were important driving factors for the seasonal succession of the two species. When grown together with <i>P. agardhii</i>, <i>R. mediterranea</i> growth was strongly promoted under the highest light intensity treatment. On the other hand, in monoalgal cultures under phosphorus starvation, both strains exhibited a significant increase in total alkaline phosphatase activity, and changes in the expression of homologs to <i>phoA</i>-like and <i>phoD</i> genes (members of the Pho regulon). However, <i>R. mediterranea</i> showed higher phosphatase activity than <i>P. agardhii</i>, suggesting greater tolerance to phosphate limitation. Taken together, we conclude that physiological features of <i>R. mediterranea</i> play an important role in the coexistence with <i>P. agardhii</i> under environmental changes.
Facultad de Ciencias Naturales y Museo
Instituto de Limnología "Dr. Raúl A. Ringuelet"
description <i>Raphidiopsis mediterranea</i> is a freshwater cyanobacterium that forms toxic blooms in eutrophic water bodies. Factors controlling its proliferation have not been explored in detail. We investigated <i>R. mediterranea</i> autecology by (i) analyzing its dynamics in a hypertrophic shallow lake dominated by <i>Planktothrix agardhii</i> (Oscillatoriales) and its relationship with environmental factors; and (ii) studying the effect of light intensity and phosphate availability on <i>R. mediterranea</i> isolates growing in mono or in co-cultures with <i>P. agardhii</i>. The redundancy analysis demonstrated that water temperature, light, and phosphate concentrations were important driving factors for the seasonal succession of the two species. When grown together with <i>P. agardhii</i>, <i>R. mediterranea</i> growth was strongly promoted under the highest light intensity treatment. On the other hand, in monoalgal cultures under phosphorus starvation, both strains exhibited a significant increase in total alkaline phosphatase activity, and changes in the expression of homologs to <i>phoA</i>-like and <i>phoD</i> genes (members of the Pho regulon). However, <i>R. mediterranea</i> showed higher phosphatase activity than <i>P. agardhii</i>, suggesting greater tolerance to phosphate limitation. Taken together, we conclude that physiological features of <i>R. mediterranea</i> play an important role in the coexistence with <i>P. agardhii</i> under environmental changes.
publishDate 2019
dc.date.none.fl_str_mv 2019-06-26
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/134709
url http://sedici.unlp.edu.ar/handle/10915/134709
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0018-8158
info:eu-repo/semantics/altIdentifier/issn/1573-5117
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10750-019-04002-5
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
145-157
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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