Choline and betaine as inducer agents of Pseudomonas aeruginosa phospholipase C activity in high phosphate medium |
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Authors: | Gloria I. Lucchesi Teresita A. Lisa Carlos E. Domenech |
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Affiliation: | Departamento de Biologia Molecular, Facultad de Ciencias Exactas, Universidad Nacional de Rio Cuarto, Cordoba, Argentina. |
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Abstract: | In Pseudomonas aeruginosa, choline or betaine employed as the sole carbon and nitrogen source in a high phosphate medium induced a phospholipase C and an acid phosphatase activity but not an alkaline phosphatase activity. The P. aeruginosa strain utilized in this work does not possess a constitutive phospholipase C, since under culture conditions identical to those utilized by other authors (J. Bacteriol. 93, 670-674 (1967) and J. Bacteriol. 150, 730-738 (1982), our phospholipase C proved to be an inorganic phosphate-repressible enzyme. These findings enable us to conclude that although the phosphate control for the synthesis of phospholipase C may exist, it is expressed only under certain favorable culture conditions. |
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Keywords: | Phospholipase C induction Choline Betaine Pseudomonas aeruginosa |
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