Effects of marine diesel on microbial diversity and activity in high Arctic beach sediments DOI Creative Commons
Margaux Durand, David Touchette, Ya-Jou Chen

и другие.

Marine Pollution Bulletin, Год журнала: 2023, Номер 194, С. 115226 - 115226

Опубликована: Июль 11, 2023

Global warming induced sea ice loss increases Arctic maritime traffic, enhancing the risk of ecosystem contamination from fuel spills and nutrient loading. The impact marine diesel on bacterial metabolic activity diversity, assessed by colorimetric assay, 16S rRNA metagenomic sequencing, Northwest Passage (Arctic Ocean) beach sediments was with amendment at environmentally relevant temperatures (5 15 °C). Higher temperature nutrients stimulated microbial activity, while reduced it, metabolism inhibited above 0.01 % (without nutrients) 1 (with inclusions. Diesel exposure significantly decreased diversity selected for Psychrobacter genus. Microbial hydrocarbon degradation, organic compound metabolism, exopolysaccharide production gene abundances increased under higher concentrations. Metagenomic binning recovered nine MAGs/bins degradation genes. We demonstrate a nutrients' rescue-type effect in contaminated communities via enrichment microorganisms stress response, aromatic compound, ammonia assimilation metabolisms.

Язык: Английский

Microbiomes of urban trees: unveiling contributions to atmospheric pollution mitigation DOI Creative Commons
Isabella Gandolfi, Claudia Canedoli, Asia Rosatelli

и другие.

Frontiers in Microbiology, Год журнала: 2024, Номер 15

Опубликована: Ноя. 11, 2024

Urban trees are crucial in delivering essential ecosystem services, including air pollution mitigation. This service is influenced by plant associated microbiomes, which can degrade hydrocarbons, support tree health, and influence ecological processes. Yet, our understanding of microbiomes remains limited, thus affecting ability to assess quantify the services provided as complex systems. The main hypothesis this work was that concur hydrocarbon biodegradation, tested through three case studies, collectively investigated two micro-habitats (phyllosphere cavity organic soil-TCOS) under various conditions representing diverse scenarios, applying different culture-based molecular techniques at scales. integration all results a more comprehensive role urban trees. Firstly, bacterial strains isolated from phyllosphere

Язык: Английский

Процитировано

1

Disentangling the microbial genomic traits associated with aromatic hydrocarbon degradation in a jet fuel-contaminated aquifer DOI
Kelly Hidalgo, Victor Borin Centurion, Leandro Nascimento Lemos

и другие.

Biodegradation, Год журнала: 2024, Номер 36(1)

Опубликована: Ноя. 18, 2024

Язык: Английский

Процитировано

1

Nutrient amendments enrich microbial hydrocarbon degradation metagenomic potential in freshwater coastal wetland microcosm experiments DOI Creative Commons
Kimberly L. Howland,

Jack J. Mouradian,

Donald R. Uzarski

и другие.

Applied and Environmental Microbiology, Год журнала: 2024, Номер 91(1)

Опубликована: Дек. 9, 2024

Biostimulating native microbes with fertilizers has proven to be a highly effective strategy speed up biodegradation rates in microbial communities. This study investigates the genetic potential of degrade light synthetic crude oil freshwater coastal wetland. Experimental sediment microcosms were exposed variety conditions (biological control, amendment, and nutrient amendment) incubated for 30 days before volatile organic compounds (BTEX) quantified DNA was sequenced metagenomic analysis. The resulting sequences binned into metagenome-assembled genomes (MAGs). Analyses MAGs uncovered 13-fold significant increase abundance rate-limiting hydrocarbon degrading monooxygenases dioxygenases, identified only from amendments. Further, complete degradation pathways BTEX found amendment. Moreover, (BTEX, cyclohexane, naphthalene) analyses microcosm sediments presence nutrients documented that benzene degraded below detection limits, toluene (98%) ethylbenzene (67%) predominantly reduced within days. Results indicate this wetland can linked functional bioremediation. are typically more recalcitrant tougher than alkanes. demonstrated stimulating community enhance its ability biodegrade hydrocarbons, even relatively nutrient-rich habitat like wetland, is an remediation tactic. impact spills aquatic environment pose dire social, economic, ecological effects on region. An spill Laurentian Great Lakes region affect drinking water million people. used experimental transported through underground pipeline crossing waterway between two Lakes. collected data (experiments triplicate) assessed quantity compounds, which connected function gene potential. bioremediation capabilities also provided evidence viable instead invasive physical methods.

Язык: Английский

Процитировано

1

Natural and oil surface slicks as microbial habitats in marine systems: A mini review DOI Creative Commons
Lisa Voskuhl, Janina Rahlff

Frontiers in Marine Science, Год журнала: 2022, Номер 9

Опубликована: Ноя. 25, 2022

Natural and oil surface slicks are widespread phenomena at the air-water interface represent visible films with distinct physicochemical biological properties compared to non-slick underlying marine water. Both types of have major functions in nourishing dispersing surface-dwelling micro- macroorganisms, contribute particle generation carbon cycling, known accumulate pollutants. Despite these high frequency environment, little understood considering their microbial inhabitants contributions organisms for natural slick establishment, function, ecology. Our mini review summarizes current knowledge life slicks, anthropogenic including gaps perspectives future research. Overall, we aim an increased awareness about existence differentiation between improved reporting events during sampling film seawater from epipelagic zone.

Язык: Английский

Процитировано

7

Effects of marine diesel on microbial diversity and activity in high Arctic beach sediments DOI Creative Commons
Margaux Durand, David Touchette, Ya-Jou Chen

и другие.

Marine Pollution Bulletin, Год журнала: 2023, Номер 194, С. 115226 - 115226

Опубликована: Июль 11, 2023

Global warming induced sea ice loss increases Arctic maritime traffic, enhancing the risk of ecosystem contamination from fuel spills and nutrient loading. The impact marine diesel on bacterial metabolic activity diversity, assessed by colorimetric assay, 16S rRNA metagenomic sequencing, Northwest Passage (Arctic Ocean) beach sediments was with amendment at environmentally relevant temperatures (5 15 °C). Higher temperature nutrients stimulated microbial activity, while reduced it, metabolism inhibited above 0.01 % (without nutrients) 1 (with inclusions. Diesel exposure significantly decreased diversity selected for Psychrobacter genus. Microbial hydrocarbon degradation, organic compound metabolism, exopolysaccharide production gene abundances increased under higher concentrations. Metagenomic binning recovered nine MAGs/bins degradation genes. We demonstrate a nutrients' rescue-type effect in contaminated communities via enrichment microorganisms stress response, aromatic compound, ammonia assimilation metabolisms.

Язык: Английский

Процитировано

3