Metal tolerance in enterococci isolated from seabirds in Abrolhos Archipelago, Brazil: Evaluating their role as bioindicators of marine pollution

Mocellin, Raquel Rita; Toigo, Amanda Ladeira; dos Santos, Camila Coutinho; Frazzon, Jeverson; Nunes, Guilherme Tavares; Bugoni, Leandro; Prichula, Janira; Frazzon, Ana Paula Guedes

doi:10.1016/j.marpolbul.2024.116866

Marine Pollution Bulletin

2024

DOI: 10.1016/j.marpolbul.2024.116866

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Metal tolerance in enterococci isolated from seabirds in Abrolhos Archipelago, Brazil: Evaluating their role as bioindicators of marine pollution

Raquel Rita Mocellin,

Amanda Ladeira Toigo,

Camila Coutinho dos Santos

et al.

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Metagenomic Insights into the Spatio-temporal Variation of Metal and Antibiotic Resistance Genes in Lake Erie

Reddy,

Kiledal

2024

Preprint

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Antibiotic resistance and metal toxicity in freshwater bodies have human health impacts and carry economic implications worldwide. The presence of metal and antibiotic resistance genes within microbial communities can be informative about both issues. The Laurentian Great Lakes contain nearly 20% of the world's supply of freshwater; however, it is unclear how these genes are changing over time in this system. In this study, we characterized these genes in nearly two hundred metagenomes collected from multiple sites in western Lake Erie at a five-year time interval: 2014-2019. 11 metal resistance genes (MRGs) and nine antibiotic resistance genes (ARGs) were characterized and demonstrated significant changes in diversity and spatial distribution. Increased abundance was observed for genes like aac(3) and TEM-1B conferring resistance to aminoglycoside (gentamicin) and B-lactam antibiotics, respectively. MRGs associated with mercury, lead, and arsenic also increased in abundance over the five years. Collectively, our data point to a notable increase in both ARGs and MRGs in Lake Erie over five years, with a specific and significant increase in the abundance of genes conferring resistance to aminoglycoside and B-lactam antibiotic resistance and mercury contamination. Future integrated and systematic freshwater microbiome and public health investigations are needed to assess the potential impact on humans and environmental health from increasing microbial antibiotic and metal resistance in large freshwater reservoirs like the Great Lakes.

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Metagenomic Insights into the Spatio-temporal Variation of Metal and Antibiotic Resistance Genes in Lake Erie

Reddy,

Kiledal

2024

Preprint

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Metal tolerance in enterococci isolated from seabirds in Abrolhos Archipelago, Brazil: Evaluating their role as bioindicators of marine pollution

Cited by 1 publication

References 43 publications

Metagenomic Insights into the Spatio-temporal Variation of Metal and Antibiotic Resistance Genes in Lake Erie

Metagenomic Insights into the Spatio-temporal Variation of Metal and Antibiotic Resistance Genes in Lake Erie

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