Bioaerosol nexus of air quality, climate system and human health

National Science Open, Journal Year: 2022, Volume and Issue: 2(4), P. 20220050 - 20220050

Published: Dec. 7, 2022

Aerosols of biological origins, known as bioaerosols, in addition to having the aerosol properties, have those a living system that offers them some enabling functionalities. From science technology, visible progress around world has been made bioaerosol field before and especially during COVID-19 pandemic. Here roles across various disciplines, including air quality, climate human health are highlighted appreciated light Anthropocene one concept. In particular, we recognized importance aerobiology under haze pollution, allergenic pollen involvement infectious inflammation-related non-communicable diseases. Future interdisciplinary studies focusing on chemical process microorganisms air, airborne transmission emerging pathogens allergens association between exposure development variations microbiome immune response needed elucidate interactions bioaerosols with earth system.

Language: Английский

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The aeromicrobiome: the selective and dynamic outer-layer of the Earth’s microbiome

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: May 16, 2023

The atmosphere is an integral component of the Earth's microbiome. Abundance, viability, and diversity microorganisms circulating in air are determined by various factors including environmental physical variables intrinsic biological properties microbes, all ranging over large scales. aeromicrobiome thus poorly understood difficult to predict due high heterogeneity airborne their properties, spatially temporally. acts as a highly selective dispersion means on scales for microbial cells, exposing them multitude chemical atmospheric processes. We provide here brief critical review current knowledge propose future research directions aiming at improving our comprehension biome.

Language: Английский

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Airborne microalgal and cyanobacterial diversity and composition during rain events in the southern Baltic Sea region

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: Feb. 7, 2022

Abstract Airborne cyanobacteria and microalgae are commonly found in the atmosphere may pose a serious human health risk. This study presents an innovative investigation of washout efficiency airborne Gulf Gdańsk (southern Baltic Sea). For first time, number type were determined rainwater samples air before after rainfall events. The cells ranged, depending on, e.g., weather conditions, from 100 L –1 to 342.2 × 10 3 . Several harmful taxa, such as Chlorococcum sp., Oocystis Anabaena Leptolyngbya Nodularia Pseudanabaena Synechococcus Synechocystis Gymnodinium noted our study. Washing out by rain is extremely relevant decreases chance that people inhale these species their toxic metabolic products. greatest diversity was recorded July 2019, despite this being period with lowest samples. Research conducted southern Sea region confirmed relationship between occurrence blooms sea. It worth emphasizing decreased up 87% event relative event. obtained results significantly increase level knowledge about present air. By demonstrating efficiencies microalgae, indicate potential individual taxa be removed rainfall. findings helpful for further research on microorganisms quality.

Language: Английский

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Intestinal microbiota of Nearctic‐Neotropical migratory birds vary more over seasons and years than between host species

Molecular Ecology, Journal Year: 2023, Volume and Issue: 32(12), P. 3290 - 3307

Published: March 28, 2023

Seasonal migration of Nearctic-Neotropical passerine birds may have profound effects on the diversity and abundance their host-associated microbiota. Migratory experience seasonal change in environments diets throughout course annual cycle that, along with recurrent biological events such as reproduction, significantly impact In this study, we characterize intestinal microbiota four closely related species migratory Catharus thrushes at three time points cycle: during spring migration, summer breeding territories fall migration. Using observations replicated over 3 years, determined that microbial community was different across distinct periods cycle, whereas composition more similar within than years. Elevated alpha compared to either period indicated harbour a reduced active We also found did not substantially differ between host species. Finally, recovered two phyla, Cyanobacteria Planctomycetota, which are commonly described from birds, were relatively high specific This study contributes our growing understanding how wild vary disparate ecological conditions reveals potential axes an animal's flexibility adapts variable cycle.

Language: Английский

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Uncertainties surrounding the oldest fossil record of diatoms

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: May 17, 2023

Molecular clocks estimate that diatom microalgae, one of Earth's foremost primary producers, originated near the Triassic-Jurassic boundary (200 Ma), which is close in age to earliest, generally accepted fossils genus Pyxidicula. During an extensive search for Jurassic diatoms from twenty-five sites worldwide, three yielded microfossils initially recognized as diatoms. After applying stringent safeguards and evaluation criteria, however, found at each were rejected new records. This led us systematically reexamine published evidence support Lower- Middle-Jurassic Pyxidicula fossils. Although resembles some extant radial centric has character states may have been similar those ancestral diatoms, we describe numerous sources uncertainty regarding reliability these We conclude Lower most likely calcareous nannofossils, whereas Middle species reassigned Cretaceous a testate amoeba, not diatom. Excluding widens gap between estimated time origin oldest abundant fossil record 75 million years. study underscores difficulties discovering validating ancient microfossils.

Language: Английский

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Environmental microbiome in the home and daycare settings during the COVID‐19 pandemic, and potential risk of non‐communicable disease in children

Environmental Microbiology Reports, Journal Year: 2024, Volume and Issue: 16(1)

Published: Jan. 12, 2024

Abstract An exposure to diverse microbial population early in life is important for the development of immunity against various non‐communicable diseases including asthma, childhood leukaemia and other cancers. Social mixing daycare settings helps with a variety microbes. However, social isolation high emphasis on workplace hygiene during COVID pandemic may have affected children's microbiota. The structure communities their role developing are not well understood. In this study, we investigated home pandemic. Interestingly, diversity was relatively higher dust samples collected from homes, human‐associated taxa being more prevalent compared those settings. Environmental microbes were abundant providers. These results potentially suggest that cleaning practices influenced abundance samples. Several bacterial detected both environments known induce anti‐inflammatory immunomodulatory responses, conferring protection diseases. Therefore, play an infectious

Language: Английский

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Clouds influence the functioning of airborne microorganisms

Biogeosciences, Journal Year: 2025, Volume and Issue: 22(5), P. 1257 - 1275

Published: March 6, 2025

Abstract. Airborne microorganisms can remain at altitude for several days, exposed to multiple environmental constraints that prevent or limit microbial activity, the most important of which is probably lack available liquid water. Clouds, i.e., air masses containing water, could offer more favorable conditions. In order investigate influence clouds on functioning airborne microorganisms, we captured aerosols in a nucleic acid preservation buffer from high-altitude mountain meteorological station under cloudy and clear-atmosphere conditions examined metatranscriptomes. The specificities aeromicrobiome's clear atmosphere were then decrypted using differential expression analysis (DEA). data reveal higher RNA : DNA content than atmosphere, suggesting metabolic overrepresentation transcripts related energy metabolism, processing carbon nitrogen compounds, intracellular signaling, regulations, transmembrane transports. Stress response tends towards responses osmotic shocks starvation rather oxidants atmosphere. Autophagy processes eukaryotes (macropexophagy, recycling peroxisomes) help alleviate limited amounts nutrients restricted microenvironments provided by cloud droplets. whole phenomenon resembles rapid resumption activity dry soils after rewetting rain, known as Birch effect described here first time This work provides unprecedented information modulations an relation atmospheric addition contributing fate chemical compounds cloud-induced biological have ecological repercussions shaping diversity their capacity invade surface environments.

Language: Английский

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Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources

Frontiers in Microbiology, Journal Year: 2022, Volume and Issue: 13

Published: July 8, 2022

The Arctic is a hot spot for climate change with potentially large consequences on global scale. Aerosols, including bioaerosols, are important players in regulating the heat balance through direct interaction sunlight and indirectly, inducing cloud formation. Airborne bacteria major bioaerosols some species producing most potent ice nucleating compounds known, which implicated formation of clouds. Little known about numbers dynamics airborne even less their seasonal variability. We collected aerosol samples wet deposition spring 2015 summer 2016, at Villum Research Station Northeast Greenland. used amplicon sequencing qPCR targeting 16S rRNA genes to assess quantities composition DNA cDNA-level bacterial community. found clear variation atmospheric community, likely due variable sources meteorology. In early spring, community was dominated by taxa originating from temperate Subarctic regions arriving sampling site long-range transport. observed an efficient washout aerosolized cells during snowstorm, followed very low concentrations atmosphere consecutive 4 weeks. suggest that this because late transport ceased, local comprised only snow surfaces were weak resulting concentrations. This supported changes chemical aerosols. summer, air confined such as soil, plant material melting sea-ice. Aerosolized deposited Cyanobacteria had high activity potential, implying or surface snow. Overall, we show how aerosols varies scale, identify potential sources, demonstrate sizes time, investigate diversity determine post haze.

Language: Английский

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Blowin’ in the wind: Dispersal, structure, and metacommunity dynamics of aeolian diatoms in the McMurdo Sound region, Antarctica

Journal of Phycology, Journal Year: 2021, Volume and Issue: 58(1), P. 36 - 54

Published: Nov. 25, 2021

Diatom metacommunities are structured by environmental, historical, and spatial factors that often attributed to organism dispersal. In the McMurdo Sound region (MSR) of Antarctica, wind connects aquatic habitats through delivery inorganic organic matter. We evaluated dispersal diatoms in aeolian material its relation regional diatom metacommunity using light microscopy 18S rRNA high-throughput sequencing. The concentration ranged from 0 8.76 * 106 valves · g-1 dry material. Up 15% whole cells contained visible protoplasm, indicating up 3.43 104 potentially viable individuals could be dispersed a year single 2 -cm2 site. DNA RNA was detected at each site, reinforcing likelihood we observed diatoms. Of 50 known morphospecies MSR, 72% were identified microscopy. Aeolian community composition varied primarily Meanwhile, comprised found communities same lake basin. These results suggest MSR is spatially structured, predominantly local, local via shared species pool. Nonetheless, structure distinct communities, intrahabitat environmental filtering also underlie dynamics. present study confirms large number passively across landscape characterized processes, integrating flora contributing connectivity.

Language: Английский

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ConnecSenS, a Versatile IoT Platform for Environment Monitoring: Bring Water to Cloud

Sensors, Journal Year: 2023, Volume and Issue: 23(6), P. 2896 - 2896

Published: March 7, 2023

Climate change is having an increasingly rapid impact on ecosystems and particularly the issue of water resources. The Internet Things communication technologies have now reached a level maturity that allows sensors to be deployed more easily sites monitor them. communicating node based LoRaWAN technology presented in this article open interfacing numerous for designing long-term environmental monitoring systems isolated sites. data integration cloud ensured by workflow driving storage indexing data, allowing simple efficient use different users (scientists, administration, citizens) through specific dashboards extractions. This presents infrastructure cases related

Language: Английский

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