Microbial population shift caused by sulfamethoxazole in engineered-Soil Aquifer Treatment (e-SAT) system

World Journal of Microbiology & Biotechnology
Ashwinkumar P RudrashettiR A Pandey

Abstract

The engineered-Soil Aquifer Treatment (e-SAT) system was exploited for the biological degradation of Sulfamethoxazole (SMX) which is known to bio-accumulate in the environment. The fate of SMX in soil column was studied through laboratory simulation for a period of 90 days. About 20 ppm SMX concentration could be removed in four consecutive cycles in e-SAT. To understand the microbial community change and biological degradation of SMX in e-SAT system, metagenomic analysis was performed for the soil samples before (A-EBD) and after SMX exposure (B-EBD) in the e-SAT. Four bacterial phyla were found to be present in both the samples, with sample B-EBD showing increased abundance for Actinobacteria, Bacteroidetes, Firmicutes and decreased Proteobacterial abundance compared to A-EBD. The unclassified bacteria were found to be abundant in B-EBD compared to A-EBD. At class level, classes such as Bacilli, Negativicutes, Deltaproteobacteria, and Bacteroidia emerged in sample B-EBD owing to SMX treatment, while Burkholderiales and Nitrosomonadales appeared to be dominant at order level after SMX treatment. Furthermore, in response to SMX treatment, the family Nitrosomonadaceae appeared to be dominant. Pseudomonas was the most dominating ...Continue Reading

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Methods Mentioned

BETA
chemical treatment
electrophoresis
Illumina sequencing
PCR
chip

Software Mentioned

Statistical Analysis of Metagenomic Profiles ( STAMP )
Covaris
WebMGA
NextSeq
Venny
MEGAN
hmm
STAMP
RAST
SAT

Related Concepts

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