Use este identificador para citar ou linkar para este item: http://www.repositorio.ufop.br/handle/123456789/7397
Título: Glycerol utilization in Fusarium oxysporum var lini : regulation of transport and metabolism.
Autor(es): Castro, Ieso de Miranda
Dias, Maria C. Loureiro
Data do documento: 1991
Referência: CASTRO, I. de M.; DIAS, M. C. L. Glycerol utilization in Fusarium oxysporum var lini : regulation of transport and metabolism. Journal Of General Microbiology, v. 137, p.1497-1502, 1991. Disponível em: <http://mic.microbiologyresearch.org/content/journal/micro/10.1099/00221287-137-7-1497>. Acesso em: 10 jan. 2017.
Resumo: Glycerol was transported in the fungus Fusarium oxysporum var. lini by a facilitated diffusion transport system with a half-saturation constant, Ks, of 0.5 mM and a maximum velocity, Vmax, of 0.9 mmol (g dry wt)-l h-l at pH 5 and 25OC. 1,2-Propanediol was a competitive inhibitor of glycerol transport, but the cells did not actively accumulate 1,2-propanediol. The transport system was partially constitutive. In cells grown in the presence of glucose, glycerol was not transported, indicating that the synthesis of the system was under glucose repression. Glycerol base and NADP+-dependent glycerol dehydrogenase activities were present under all physiological conditions tested. A flavin-dependent glycerol phosphate dehydrogenase was induced only when glycerol was the sole energy source in the medium. This enzyme, together with the transport system, constitute the regulated steps in the glycerol metabolic pathway.
URI: http://www.repositorio.ufop.br/handle/123456789/7397
Link para o editor: http://mic.microbiologyresearch.org/content/journal/micro/10.1099/00221287-137-7-1497
ISSN: 00221287
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