Díaz DME, Villa P, Frías A

Language: Spanish
References: 20
Page: 112-117
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Siderophores are compounds secreted under low iron stress, that act as a specific ferric iron chelate agents and due to their potentialities in the biological control of phytophatogenic fungi and bacteria their study have been stimulated in recent years. Siderophores produced by different Pseudomonas species have been widely studied as biological agents and it is an alternative to take into account in the control of phytopathogenic microorganisms in agriculture. The purpose of this paper was the study the influence of some culture medium, and the iron concentration in the production of this metabolite. The experiments were carried out in a conventional batch system in succinate, glucose and glutamic medium. The highest metabolite concentration was obtained in glucose and glutamic medium. The increase of Fe(III) concentration, had a negative effect in siderophores production, specially above 10 mM. The evaluation of the studied medium lead to the conclusion that it is possible to increase the production of this metabolite by the strain of Pseudomonas aeruginosa PSS, in a glutamic medium without iron addition.

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