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Provedor de dados:  ArchiMer
País:  France
Título:  Physiology and continuous culture of the hyperthermophilic deep-sea vent archaeon Pyrococcus abyssi ST549
Autores:  Godfroy, Anne
Raven, N
Sharp, R
Data:  2000-05
Ano:  2000
Palavras-chave:  Sulfur requirement
Continuous culture
Pyrococcus abyssi
Resumo:  The deep-sea vent archaeon Pyrococcus abyssi strain ST549 was grown in batch cultures in closed bottles and by continuous culture in a gas-lift bioreactor, both in the presence and in the absence of elemental sulfur. Growth on carbohydrates, proteinaceous substrates and amino acids was investigated. The disaccharides maltose and cellobiose were shown not to be able to enhance growth suggesting that P. abyssi ST549 is unable to use them as carbon sources. By contrast, proteinaceous substrates such as peptone and brain heart infusion were shown to be very good substrates for the growth of P. abyssi ST549 and allowed growth at high steady-state cell densities in continuous culture. Growth on brain heart infusion was shown to require additional nutrients when sulfur was not present in the culture medium. Growth on amino acids only took place in the presence of sulfur. These results indicate that sulfur plays an important role in the metabolism and energetics of P. abyssi ST549. (C) 2000 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.
Tipo:  Text
Idioma:  Inglês

Editor:  Elsevier
Formato:  application/pdf
Fonte:  FEMS Microbiology Letters (0378-1097) (Elsevier), 2000-05 , Vol. 186 , N. 1 , P. 127-132
Direitos:  2000 Federation of European Microbiological Societies. Published by Elsevier Science B.V.

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