| Registro completo |
| Provedor de dados: |
BJM
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| País: |
Brazil
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| Título: |
The inhibitory effect of calcium on Cylindrospermopsis raciborskii (cyanobacteria) metabolism
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| Autores: |
Carneiro,Ronaldo Leal
Alípio,Ana Carla Nascimento
Bisch,Paulo Mascarello
Azevedo,Sandra Maria Feliciano de Oliveira e
Pacheco,Ana Beatriz Furlanetto
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| Data: |
2011-12-01
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| Ano: |
2011
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| Palavras-chave: |
Calcium
Cylindrospermopsis
Paralitic shellfish toxin
Proteome
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| Resumo: |
Cylindrospermopsis raciborskii (Woloszynska) Seenaya & Subba Raju is a freshwater cyanobacterium of worldwide distribution. In the North-eastern region of Brazil many eutrophic water reservoirs are characterized by the dominance of C. raciborskii, with recurrent occurrence of blooms. These water bodies have high conductivity due to a high ionic concentration, and are defined as hard (with high values of CaCO3). In this study, we investigated the long-term effect (12 days) of high calcium concentration (8 mM Ca2+) on C. raciborskii (T3 strain) growth, morphology, toxin content, and metabolism. Changes in protein expression profiles were investigated by proteomic analysis using 2D gel electrophoresis and mass spectrometry. A continued exposure to calcium had a pronounced effect on C. raciborskii (T3): it limited growth, decreased thricome length, increased chlorophyll-a content, altered toxin profile (although did not affect PST content, saxitoxin + neosaxitoxin), and inhibited the expression of proteins related to primary metabolism.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400042
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| Editor: |
Sociedade Brasileira de Microbiologia
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| Relação: |
10.1590/S1517-83822011000400042
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Microbiology v.42 n.4 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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