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Macchi M, Festa S, Nieto E, Irazoqui JM, Vega-Vela NE, Junca H, Valacco MP, Amadio AF, Morelli IS, Coppotelli BM. Design and evaluation of synthetic bacterial consortia for optimized phenanthrene degradation through the integration of genomics and shotgun proteomics. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2021; 29:e00588. [PMID: 33489789 PMCID: PMC7809168 DOI: 10.1016/j.btre.2021.e00588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 12/22/2020] [Accepted: 12/31/2020] [Indexed: 01/15/2023]
Abstract
Two synthetic bacterial consortia (SC) composed of bacterial strains Sphingobium sp. (AM), Klebsiella aerogenes (B), Pseudomonas sp. (Bc-h and T), Burkholderia sp. (Bk) and Inquilinus limosus (Inq) isolated from a natural phenanthrene (PHN)-degrading consortium (CON) were developed and evaluated as an alternative approach to PHN biodegradation in bioremediation processes. A metabolic network showing the potential role of strains was reconstructed by in silico study of the six genomes and classification of dioxygenase enzymes using RHObase and AromaDeg databases. Network analysis suggested that AM and Bk were responsible for PHN initial attack, while Inq, B, T and Bc-h would degrade PHN metabolites. The predicted roles were further confirmed by physiological, RT-qPCR and metaproteomic assays. SC-1 with AM as the sole PHN degrader was the most efficient. The ecological roles inferred in this study can be applied to optimize the design of bacterial consortia and tackle the biodegradation of complex environmental pollutants.
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Affiliation(s)
- Marianela Macchi
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP, CCT-La Plata, CONICET), La Plata, Argentina
| | - Sabrina Festa
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP, CCT-La Plata, CONICET), La Plata, Argentina
| | - Esteban Nieto
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP, CCT-La Plata, CONICET), La Plata, Argentina
| | - José M. Irazoqui
- E.E.A. Rafaela, Instituto Nacional de Tecnología Agropecuaria (INTA), CCT Santa Fe, CONICET, Rafaela, Argentina
| | - Nelson E. Vega-Vela
- Pontificia Universidad Javeriana, Bogotá, Colombia
- Universidad de Bogotá Jorge Tadeo Lozano, Bogotá, Colombia
| | - Howard Junca
- Microbiomas Foundation, Div. Ecogenomics & Holobionts, RG Microbial Ecology: Metabolism, Genomics & Evolution, Chía, Colombia
| | | | - Ariel F. Amadio
- E.E.A. Rafaela, Instituto Nacional de Tecnología Agropecuaria (INTA), CCT Santa Fe, CONICET, Rafaela, Argentina
| | - Irma S. Morelli
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP, CCT-La Plata, CONICET), La Plata, Argentina
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, La Plata, Argentina
| | - Bibiana M. Coppotelli
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (UNLP, CCT-La Plata, CONICET), La Plata, Argentina
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