Genomic analysis and proteomic response of the chromium‐resistant and phenanthrene‐degrading strain Streptomyces sp. MC1

SINELI, PEDRO E.; HERRERA, HECTOR M.; APARICIO, JUAN D.; GUERRERO, DAIANA S.; POLTI, MARTA A.; DÁVILA COSTA, JOSÉ S.

JOURNAL OF APPLIED MICROBIOLOGY

WILEY-BLACKWELL PUBLISHING, INC

Año: 2021

1364-5072

AimChemically disparate toxic organic and/or inorganic molecules produced by anthropogenic activities often hinder the bioremediation process. This research was conducted to understand the capacity of Streptomyces sp. MC1 to remove chemically disparate toxics such as Cr(VI) or phenanthrene.Methods and ResultsGenomic, metabolic modeling and proteomic approaches were used in this study. Our results demonstrated that Streptomyces sp. MC1 has the genetic determinants to remove Cr(VI) or degrade phenanthrene. Proteomics showed that these genetic determinants were expressed. Metabolic versatility of the strain was confirmed by two metabolic models in complex and minimal media. Interestingly, our results also suggested a connection between the degradation of phenanthrene and synthesis of specialized metabolites.ConclusionsStreptomyces sp. MC1 has the genetic and physiological potential to remove Cr(VI) or degrade phenanthreneSignificance and Impact of StudyThe probability of a microorganism to survive in the presence of different contaminants depends on its genetic potential and the ability to express it. The genetic and proteomic profiles obtained for Streptomyces sp. MC1 can be recommended as model and predict if other Streptomyces strains can be used in bioremediation processes. Our work also hypothesized that intermediates of the phenanthrene degradation serve as precursors for the specialized metabolism.