RT info:eu-repo/semantics/article
T1 Bioprospection of bacterial strains from chromite process industry residues from Mexico for potential remediation
A1 Martínez Aldape, Paola Abigail
A1 Sandoval Vergara, Mario Enrique
A1 Padilla Hernández, Reyna Edith
A1 Caretta, César Augusto
A1 Valerdi Negreros, Julio César
A1 Casanova, Pablo
A1 Monteiro Schaerer, Magna María
A1 Gassie, Claire
A1 Goñi Urriza, Marisol
A1 Souza Brito, Elcia Margareth
A1 Guyoneaud, Remy
AB Industrial residues with high concentrations of hexavalent chromium [Cr(VI)], characterized by an alkaline pH (between 9 and 13) and high salinity (around 100 psu), were used as a source for extremophilic chromium-resistant and -reducing microorganisms. An investigation of biodiversity through MiSeq showed the presence of 20 bacterial classes, with Bacilli (47%), Negativicutes (15%), Bacteriodia (8%), Gammaproteobacteria (7%) and Clostridia (5%) being the most abundant. The bioprospection allowed the cultivation of 87 heterotrophic bacterial colonies and 17 bacterial isolates at the end of the isolation, and screening procedures were obtained. The isolates were related to Cellulosimicrobium aquatile, C. funkei, Acinetobacter radioresistens, Staphylococcus equorum, S. epidermis, Brachybacterium paraconglometratum, Glutamicibacter creatinolyticus, Pseudomonas songnenensis, Microbacterium algeriense and Pantoea eucalypti, most of them being resistant to Cr(VI). Resistances of up to 400 mg.L−1 of chromate were obtained for four related strains (QReMLB55A, QRePRA55, QReMLB33A and QReMLB44C). The C. aquatile strain QReMLB55A and the P. songnenensis strain QReMLB33A were exposed to K2Cr2O7 (200 mg.L−1) under optimal conditions, diminishing 94% and 24% of the Cr(VI) in 6 days, respectively. These strains exhibited a high potential for chromium remediation biotechnologies.
PB Multidisciplinary Digital Publishing Institute
YR 2024
FD 2024-04-18
LK http://hdl.handle.net/20.500.14066/4503
UL http://hdl.handle.net/20.500.14066/4503
LA eng
NO Martínez Aldape, P. A., Sandoval Vergara, M. E., Padilla Hernández, R. E., Caretta, C. A., Valerdi Negreros, J. C., Casanova, P., Monteiro, M. M., Gassie, C., Goñi Urriza, M., Souza Brito, E. M., & Guyoneaud, R. (2024). Bioprospection of bacterial strains from chromite process industry residues from Mexico for potential remediation. Applied Microbiology, 4(2), 665-681. https://doi.org/10.3390/applmicrobiol4020046
NO Correspondence: Remy Guyoneaud, remy.guyoneaud@univ-pau.fr
NO This article belongs to the Special Issue Exclusive Papers Collection of Editorial Board Members and Invited Scholars in Applied Microbiology (2023, 2024).
NO Consejo Nacional de Ciencia y Tecnología
DS MINDS@UW
RD 19-ene-2025