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	Provedor de dados 61 (1) Autor El-Mazaly,E. (1) El-Naggar,A.H. (1) El-Sheekh,M.M. (1) Osman,M.E.H. (1) Palavra-chave Cobalt (1) Diatoms (1) Green algae (1) Photosynthesis (1) Pigments (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2003 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Effect of cobalt on growth, pigments and the photosynthetic electron transport in Monoraphidium minutum and Nitzchia perminuta 61 El-Sheekh,M.M.; El-Naggar,A.H.; Osman,M.E.H.; El-Mazaly,E.. The unicellular green alga Monoraphidium minutum and the diatom Nitzschia perminuta were cultured under different concentrations of Co2+. Growth and pigment content were slightly increased at low concentrations and inhibited by high Co2+ concentrations. The results concerning the effect of different concentrations of Co2+ on photosynthetic O2 evolution showed a reduction in the amount of O2 evolved by each alga in response to increasing Co2+ concentrations. However, an increase in O2 evolution for both M. minutum and N. perminuta was observed at relatively low Co2+ concentrations. Photosynthetic electron transport in M. minutum was more sensitive to Co2+ toxicity than in N. perminuta. On the other hand, the effect of the heavy metal on respiration showed... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cobalt; Diatoms; Green algae; Pigments; Photosynthesis. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000300005 Registros recuperados: 1 Primeira ... 1 ... Última

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