Volume 19, No. 5, 2022

In-Vitro Evaluation Of Siderophore Production By Bacteria In The Presence Of Heavy Metal

Alexander Perez-Cordero , Donicer Montes –Vergara and Yelitza Aguas –Mendoza


Heavy metal contamination of soils is becoming widespread and causing serious environmental problems. There is evidence of the synthesis of siderophores by bacteria when they grow in environments with the presence of toxic heavy metals; therefore, the aim of this study was to evaluate in-vitro the production of siderophores at different concentrations of Pb(NO3)2. Three strains of endophytic bacteria were selected from the genomic bank of the microbiological research laboratory of the University of Sucre, for endophytic bacteria isolated from mercury-contaminated environments. Lead tolerance tests were carried out at different concentrations (100, 200, 300, 400 and 500 mg/L), and the capacity of these bacteria to produce siderophores was evaluated. The results obtained indicate that the endophytic strains evaluated produced siderophores at different concentrations of the metal lead. The results indicate that these endophytic bacteria could contribute to the phytoremediation of plant species adapted to different environments contaminated with lead in the Colombian Caribbean.

Pages: 228-237

Keywords: Bioremediation, Siderophores, Lead, Bulkhorderia cepaceae, Bacillus cereus.

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