Perchlorate-Reducing Bacteria from Hypersaline Soils of the Colombian Caribbean

• Published in: International Journal of Microbiology
• Main Authors: Acevedo-Barrios, Rosa, Bertel-Sevilla, Angela, Alonso Molina, José Luís, Olivero-Verbel, Jesus
• Other Authors: Universitat Politècnica de València. Instituto Universitario de Ingeniería del Agua y del Medio Ambiente - Institut Universitari d'Enginyeria de l'Aigua i Medi Ambient, Universidad de Cartagena, Colombia
• Format: Article in Journal/Newspaper
• Language: English
• Published: Hindawi 2019
• Subjects: Perchlorate degrading bacteria; Hypersaline soils; Salinovibrio; Bacillus; Barrios; Ferris; Greenland; Molina; Olivero; Greenland ice core; ice core
• Online Access: http://hdl.handle.net/10251/141954; https://doi.org/10.1155/2019/6981865

[EN] Perchlorate (ClO4¿) has several industrial applications and is frequently detected in environmental matrices at relevant concentrations to human health. Currently, perchlorate-degrading bacteria are promising strategies for bioremediation in polluted sites. The aim of this study was to isolate and characterize halophilic bacteria with the potential for perchlorate reduction. Ten bacterial strains were isolated from soils of Galerazamba-Bolivar, Manaure-Guajira, and Salamanca Island-Magdalena, Colombia. Isolates grew at concentrations up to 30% sodium chloride. The isolates tolerated pH variations ranging from 6.5 to 12.0 and perchlorate concentrations up to 10000¿mg/L. Perchlorate was degraded by these bacteria on percentages between 25 and 10. 16S rRNA gene sequence analysis indicated that the strains were phylogenetically related to Vibrio, Bacillus, Salinovibrio, Staphylococcus, and Nesiotobacter genera. In conclusion, halophilic-isolated bacteria from hypersaline soils of the Colombian Caribbean are promising resources for the bioremediation of perchlorate contamination. This research received support from the Vice Presidency of Research, University of Cartagena; and Colciencias-University of Cartagena (Grant: RC-758-2011/1107-521-29360). Acevedo-Barrios, R.; Bertel-Sevilla, A.; Alonso Molina, JL.; Olivero-Verbel, J. (2019). Perchlorate-Reducing Bacteria from Hypersaline Soils of the Colombian Caribbean. International Journal of Microbiology. 2019:1-13. https://doi.org/10.1155/2019/6981865 S 1 13 2019 Cole-Dai, J., Peterson, K. M., Kennedy, J. A., Cox, T. S., & Ferris, D. G. (2018). Evidence of Influence of Human Activities and Volcanic Eruptions on Environmental Perchlorate from a 300-Year Greenland Ice Core Record. Environmental Science & Technology, 52(15), 8373-8380. doi:10.1021/acs.est.8b01890 Acevedo-Barrios, R., Sabater-Marco, C., & Olivero-Verbel, J. (2018). Ecotoxicological assessment of perchlorate using in vitro and in vivo assays. Environmental Science and ...