Consulta: subjectFacets:"Cylindrospermopsis"
Registros recuperados: 2
Data/hora: 06/06/2024 13:28:01

Morpho-physiological responses of a subtropical strain of Cylindrospermopsis raciborskii (Cyanobacteria) to different light intensities
Provedor de dados: 39
Autores: Wojciechowski,Juliana; Fernandes,Luciano Felício; Fonseca,Fernanda Vitória Buck.
ABSTRACT The toxigenic cyanobacterium Cylindrospermopsis raciborskii previously restricted to tropical latitudes, has been increasingly reported in temperate lakes in recent decades. The causes of its biogeographical expansion are under investigation, but efficient physiological adaptation to changes in temperature and light regimes are likely to be involved. The present study evaluated the morpho-physiological responses of a strain of C. raciborskii from southern Brazil to nine light intensities, from 9 to 250 µmol photons m-2 s-1. Blooms of this cyanobacterium are regularly recorded in the region. Morpho-physiological responses were measured based on growth rate and trichome length. Cylindrospermopsis raciborskii showed slow growth at low light...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cylindrospermopsis; Cyanobacteria blooms; Experiments; Light intensities; Morpho-physiological responses; Southern Brazil; Subtropical.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200232

The inhibitory effect of calcium on Cylindrospermopsis raciborskii (cyanobacteria) metabolism
Provedor de dados: 58
Autores: Carneiro,Ronaldo Leal; Alípio,Ana Carla Nascimento; Bisch,Paulo Mascarello; Azevedo,Sandra Maria Feliciano de Oliveira e; Pacheco,Ana Beatriz Furlanetto.
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...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Cylindrospermopsis; Paralitic shellfish toxin; Proteome.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400042