Seasonal shift in airborne microbial communities

Tignat-Perrier, Romie; Dommergue, Aurélien; Thollot, Alban; Magand, Olivier; Amato, Pierre; Joly, Muriel; Sellegri, Karine; Vogel, Timothy M.; Larose, Catherine

doi:10.1016/j.scitotenv.2020.137129

Cited by 54 publications

(41 citation statements)

References 42 publications

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“…Metagenomic investigations of different ecosystems revealed a specific functional potential signature of their associated microbial communities (Delmont et al, 2011;Tringe et al, 2005). These specific signatures are thought to result from microbial adaptation and/or physical selection to the environmental abiotic conditions (Hindré et al, 2012;Li et al, 2019;Rey et al, 2016) and are a reflection of the high relative abundances of genes coding for specific functions essential for microorganisms to survive and develop in these environ- R. Tignat-Perrier et al: Airborne microbial functional signature ments.…”

Section: Discussionmentioning

confidence: 99%

“…ter, lakes, feces and sludge) have provided evidence that microorganism functional signatures reflect the abiotic conditions of their environment, with different relative abundances of specific microbial functional classes (Delmont et al, 2011;Li et al, 2019;Tringe et al, 2005;Xie et al, 2011). This observed correlation of microbial-community functional potential and the physical and chemical characteristics of their environments could have resulted from genetic modifications (microbial adaptation; Brune et al, 2000;Hindré et al, 2012;Rey et al, 2016;Yooseph et al, 2010) and/or physical selection.…”

Section: Introductionmentioning

confidence: 99%

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Microbial functional signature in the atmospheric boundary layer

Tignat-Perrier¹,

Dommergue²,

Thollot³

et al. 2020

Biogeosciences

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Abstract. Microorganisms are ubiquitous in the atmosphere, and some airborne microbial cells were shown to be particularly resistant to atmospheric physical and chemical conditions (e.g., ultraviolet – UV – radiation, desiccation and the presence of radicals). In addition to surviving, some cultivable microorganisms of airborne origin were shown to be able to grow on atmospheric chemicals in laboratory experiments. Metagenomic investigations have been used to identify specific signatures of microbial functional potential in different ecosystems. We conducted a comparative metagenomic study on the overall microbial functional potential and specific metabolic and stress-related microbial functions of atmospheric microorganisms in order to determine whether airborne microbial communities possess an atmosphere-specific functional potential signature as compared to other ecosystems (i.e., soil, sediment, snow, feces, surface seawater etc.). In the absence of a specific atmospheric signature, the atmospheric samples collected at nine sites around the world were similar to their underlying ecosystems. In addition, atmospheric samples were characterized by a relatively high proportion of fungi. The higher proportion of sequences annotated as genes involved in stress-related functions (i.e., functions related to the response to desiccation, UV radiation, oxidative stress etc.) resulted in part from the high concentrations of fungi that might resist and survive atmospheric physical stress better than bacteria.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microbial functional signature in the atmospheric boundary layer

Tignat-Perrier¹,

Dommergue²,

Thollot³

et al. 2020

Biogeosciences

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“…The lower atmospheric system can be a significant transport vector for airborne microbiome (bacterial, fungal, viral) communities and their seasonal shift in both the concentration and biodiversity under influence of local and regional meteorological parameters (air temperature, relative humidity, pressure, wind speed intensity, and direction, Planetary Boundary Layer heights -PBL, surface solar irradiance) variability especially in urban areas ( Xia et al, 2022 ; Tignat-Perrier et al, 2020 ; Zoran et al, 2020b ).…”

Section: Introductionmentioning

confidence: 99%

Impacts of exposure to air pollution, radon and climate drivers on the COVID-19 pandemic in Bucharest, Romania: A time series study

Zoran

Savastru

Săvăstru

et al. 2022

Environmental Research

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“…throughout the year. A change in the surface conditioning might lead to a change in the Earth's surface microbial communities and thus a change in the diversity of the aerosolized microbial cells observed throughout the seasons [42,[71][72][73][74]. Large and visible particles such as sand dust have provided evidence for long-range transport of aerosols (i.e., transport over hundreds of kilometers) including bioaerosols.…”

Section: Surfaces Aerosolization Local Versus Distant Sourcesmentioning

confidence: 99%

Microbial Ecology of the Planetary Boundary Layer

et al. 2020

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Aerobiology is a growing research area that covers the study of aerosols with a biological origin from the air that surrounds us to space through the different atmospheric layers. Bioaerosols have captured a growing importance in atmospheric process-related fields such as meteorology and atmospheric chemistry. The potential dissemination of pathogens and allergens through the air has raised public health concern and has highlighted the need for a better prediction of airborne microbial composition and dynamics. In this review, we focused on the sources and processes that most likely determine microbial community composition and dynamics in the air that directly surrounds us, the planetary boundary layer. Planetary boundary layer microbial communities are a mix of microbial cells that likely originate mainly from local source ecosystems (as opposed to distant sources). The adverse atmospheric conditions (i.e., UV radiation, desiccation, presence of radicals, etc.) might influence microbial survival and lead to the physical selection of the most resistant cells during aerosolization and/or aerial transport. Future work should further investigate how atmospheric chemicals and physics influence microbial survival and adaptation in order to be able to model the composition of planetary boundary layer microbial communities based on the surrounding landscapes and meteorology.

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Seasonal shift in airborne microbial communities

Cited by 54 publications

References 42 publications

Microbial functional signature in the atmospheric boundary layer

Microbial functional signature in the atmospheric boundary layer

Impacts of exposure to air pollution, radon and climate drivers on the COVID-19 pandemic in Bucharest, Romania: A time series study

Microbial Ecology of the Planetary Boundary Layer

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