Metagenomics and metatranscriptomics analyses of antibiotic synthesis in activated sludge

Huang, Yu; Zou, Kui; Qing, Taiping; Feng, Bo; Zhang, Peng

doi:10.1016/j.envres.2022.113741

Cited by 6 publications

(1 citation statement)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li et al (2020) reported that a total of 83 target antibiotics were quantified in water and sediment samples collected from the Qinghai Lake, the largest inland lake of China, which suggests the urgent need to investigate the possible long-term enrichment and environmental risks of antibiotics in inland lakes. The findings of Huang et al (2022) for the first time revealed that the antibiotic synthetic potential in activated sludges could aggravate environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Physiological responses and antibiotic-degradation capacity of duckweed (Lemna aequinoctialis) exposed to streptomycin

et al. 2022

View full text Add to dashboard Cite

Aquatic plants are constantly exposed to various water environmental pollutants. Few data on how antibiotics affect duckweed health and its removal ability. The aim of this study was to investigate the impact of streptomycin on the physiological change and uptake capability in duckweed (Lemna aequinoctialis) after exposure at different time points (0, 5, 10, 15 and 20 days). Duckweeds were exposed to streptomycin at a range of concentrations (0.1-10 mM). Results indicated that the high streptomycin concentrations (≥1 mM) resulted in a lower duckweed biomass (21.5-41.5%), RGR (0.258-0.336 g d−1), decrease in total Chl and increase in carotenoids. Antioxidative enzymes, including CAT (18-42.88 U mg protein-1), APX (0.41-0.76 U mg protein-1), and SOD (0.52-0.71 U mg protein-1) were found to accumulate in the streptomycin groups in comparison to the control group. The significant reduction (72-82%) in streptomycin content at 20 d compared to the control (40-55%) suggested that duckweed has a high ability in removing streptomycin. Transcriptome analysis showed that the secondary metabolic pathways including phenylpropanoid biosynthesis and flavonoid biosynthesis were significantly upregulated in the streptomycin setup compared to the control. Therefore, our findings suggested that duckweed can contribute to the streptomycin degradation, which should be highly recommended to the treatment of aquaculture wastewater and domestic sewage.

show abstract

Section: Introductionmentioning

confidence: 99%