MESSAI.iO

AI summary

70% confidence

Microbial electrochemical systems (MESs) were found to enhance the degradation of glyphosate, with higher degradation rates compared to non-MESs cultures. The anodic biofilms in MESs were dominated by Rhodococcus, Pseudomonas, and Geobacter, while non-MESs cultures were dominated by methanogens. The results suggest that MESs can be a promising technology for glyphosate remediation.

Generated by MESSAI extraction pipeline · review against source PDF

Extraction

Reported parameters

2 extracted values

View extracted values

No 3D model is mapped to this paper yet. Parameter ranges above still place reported values on the literature distribution.

Abstract

Abstract Glyphosate, one of the most used herbicides worldwide, is known as an aquatic contaminant of concern, and can present adverse impacts in agroecosystems. In this study, we investigated the degradation of glyphosate in microbial electrochemical systems (MESs), and analysed the microbial composition of enriched anodic biofilms, and comparing them with microbial communities of non-MESs enriched cultures. MESs supported higher glyphosate degradation (68.41 ± 1.21 % to 73.90 ± 0.79 %) compared to non-MESs cultures (48.88 ± 0.51 %). The Linear Sweep Voltammetry (LSV) analysis showed that MESs operated at +300 mV, produced a maximum current of 611.95 μA, which was the highest among all the applied voltages. 16S amplicon sequencing revealed a significant difference in microbial community composition of MESs anodic biofilms and non-MESs enriched communities. The anodic biofilms were dominated by Rhodococcus (51.26 %), Pseudomonas (10.77 %), and Geobacter (8.67 %) while in non-MESs cultures, methanogens including Methanobrevibacter (51.18 %), and Methanobacterium (10.32 %), were the dominant genera. The present study suggested that MESs could be considered as a promising system for glyphosate degradation.

Key findings

  • [object Object]
  • [object Object]
  • [object Object]

Keywords

GlyphosateMicrobial population biologyGeobacterDegradation (telecommunications)Environmental chemistryMethanobacterium

Identifiers

DOI
10.1101/2022.02.21.481054
Journal
bioRxiv (Cold Spring Harbor Laboratory)
Year
2022