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Application of extracellular polymers on soil communities exposed to oil and nickel contamination
- Source :
- Braz J Microbiol, Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP
- Publication Year :
- 2020
-
Abstract
- The petrochemical industry is responsible for many accidental releases of pollutants in soil such as hydrocarbons and toxic metals. This co-contamination is responsible for a delay in the degradation of the organic pollution. Many successful technologies to remove these metals apply extracellular polymeric substances (EPS). In this study, we tested the application of an EPS from a Paenibacillus sp. to aid the bioremediation of soils contaminated with crude oil and nickel. We conducted a microcosm experiment to soils containing combinations of oil, nickel, and EPS. The final concentration of oil was evaluated with an infrared spectrometer. Also, we sequenced the metagenomes of the samples in an ion torrent sequencer. The application of EPS did not aid the removal of hydrocarbons with or without the presence of nickel. However, it led to a smaller decrease in the diversity indexes. EPS decreased the abundance of Actinobacteria and increased that of Proteobacteria. The EPS also decreased the connectivity among Actinobacteria in the network analysis. The results indicated that the addition of EPS had a higher effect on the community structure than nickel. Altogether, our results indicate that this approach did not aid the bioremediation of hydrocarbons likely due to its effect in the community structure that affected hydrocarbonoclastic microorganisms. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s42770-021-00428-z.
- Subjects :
- Pollution
Microorganism
media_common.quotation_subject
Microbiology
Actinobacteria
03 medical and health sciences
Soil
Bioremediation
Extracellular polymeric substance
Biopolymers
Nickel
Media Technology
Soil Pollutants
Environmental Restoration and Remediation
Soil Microbiology
Environmental Microbiology - Research Paper
030304 developmental biology
media_common
Pollutant
0303 health sciences
biology
Bacteria
030306 microbiology
Chemistry
PETRÓLEO
Contamination
biology.organism_classification
Hydrocarbons
Biodegradation, Environmental
Petroleum
Environmental chemistry
Microcosm
Paenibacillus
Subjects
Details
- ISSN :
- 16784405
- Volume :
- 52
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]
- Accession number :
- edsair.doi.dedup.....42d86e238c2fd9d937ac974bc5a720db