Data/hora: 06/06/2024 09:37:10

Provedor de dados: | 58
País: | Brazil
Título: | The inhibitory effect of calcium on Cylindrospermopsis raciborskii (cyanobacteria) metabolism
Autores: | Carneiro,Ronaldo Leal; Alípio,Ana Carla Nascimento; Bisch,Paulo Mascarello; Azevedo,Sandra Maria Feliciano de Oliveira e; Pacheco,Ana Beatriz Furlanetto.
Data: | 2011-12-01
Ano: | 2011
Palavras-chave: | Calcium; Cylindrospermopsis; Paralitic shellfish toxin; Proteome.
Resumo: | Cylindrospermopsis raciborskii (Woloszynska) Seenaya &amp;amp; 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400042
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822011000400042
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.42 n.4 2011
Fonte: | info:eu-repo/semantics/openAccess