Exploring the effects of haze pollution on airborne fungal composition in a cold megacity in Northeast China

Sun, Xiazhong; Li, Dongmei; Li, Bo; Sun, Shaojing; Geng, Jialu; Ma, Lixin; Qi, Hong

doi:10.1016/j.jclepro.2020.124205

Cited by 13 publications

(6 citation statements)

References 52 publications

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“…Remarkably, our analysis revealed that the abundance of Ascomycota found in the MRT‐SKV positively correlated with PM including PM 2.5 and PM 10 , while Basidiomycota negatively correlated with PM (Figure 8). Our results may indicate the association of fungal spores with particulate matters, similar to the report by Sun et al (2021) showing fungi could attach to particles in the air, and fungal richness and diversity in hazy samples were significantly higher than those in non‐hazy samples. As the spore sizes of the Ascomycota have been reported to be generally larger than those of the Basidiomycota (Elbert et al, 2007; Yamamoto et al, 2012), our findings suggested that the Ascomycota spores may attach more efficiently with PM than Basidiomycota spores do.…”

Section: Discussionsupporting

confidence: 91%

Temporal dynamics in diversity and composition of the air mycobiome and dominant allergenic fungi in the subway environment

et al. 2023

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Analyzing and monitoring air microbiomes in the subway environment has a great impact on public health, especially in urban cities. In this study, temporal distribution profile of air mycobiome at Bangkok's Sukhumvit subway station (MRT‐SKV) was explored over 12 samplings during December 2021–November 2022 by the environmental DNA‐metabarcoding approach. The top 5 most abundant fungal genera identified were Yarrowia, Cladosporium, Hortaea, Cutaneotrichosporon, and Leptobacillum. Among the 496 genera found, 24 genera could be considered “core mycobiome” of the MRT‐SKV air, as they were consistently found in ≥85% of the samples. Many members of the core mycobiome constituted human commensal genera, but several of them can elicit allergic reactions in humans and thus pose a potential health risk. Cladosporium was the most abundant allergenic fungi found in the MRT‐SKV, which is in contrast to Malassezia, Ustilago, or Aspergillus being the most abundant allergenic fungi in subway environments in other countries. The fungal compositions in the subway environment differed temporally, and the abundances of allergenic fungi were the highest in samples obtained during the first and seventh samplings (done in December 2021–June 2022). These compositional variations were most likely influenced by air quality variables, including particulate matter (PM), temperature, and relative humidity, which showed seasonal variations. Finally, certain fungal genera were shown to co‐occur together in co‐occurrence network. Many of the allergenic fungal genera formed networks more prominently in rush hour than in other traffic hours. The co‐occurrence network suggested associations among certain fungal genera, such as the association between Malassezia–Nigrospora, Alternaria–Aspergillus, and Aspergillus–Cutaneotrichosporon in the MRT‐SKV bioaerosols. The implied associations between these fungi are worth further investigation since they may point toward their impact on human health (as they are opportunistic fungi found in human). Our results thus facilitate understanding the ecological and health impacts of fungal components of the subway air environment.

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Section: Discussionsupporting

confidence: 91%

Temporal dynamics in diversity and composition of the air mycobiome and dominant allergenic fungi in the subway environment

et al. 2023

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“…According to a study by Xing et al 14 hazy conditions caused by elevated pollutant concentrations during biomass burning events in Southeast Asia were not only impacted locally but also transboundary, which was a significant source of increasing PM 2.5 concentrations in southern China. Previous studies also revealed the impact of haze pollution on the environment related to microbial community change and airborne fungal abundance 15 , 16 , an increase in caterpillar mortality and interference in butterfly development 17 as well as reduction of total rice and wheat production 18 . It is undeniable that haze episodes have a significant impact on the environment, ecology and animal habitats and human health.…”

Section: Introductionmentioning

confidence: 96%

Spatial–temporal variability and health impact of particulate matter during a 2019–2020 biomass burning event in Southeast Asia

Othman

Latif

Hamid

et al. 2022

Sci Rep

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To understand the characteristics of particulate matter (PM) in the Southeast Asia region, the spatial–temporal concentrations of PM10, PM2.5 and PM1 in Malaysia (Putrajaya, Bukit Fraser and Kota Samarahan) and Thailand (Chiang Mai) were determined using the AS-LUNG V.2 Outdoor sensor. The period of measurement was over a year from 2019 to 2020. The highest concentrations of all sizes of PM in Putrajaya, Bukit Fraser and Kota Samarahan were observed in September 2019 while the highest PM10, PM2.5 and PM1 concentrations in Chiang Mai were observed between March and early April 2020 with 24 h average concentrations during haze days in ranges 83.7–216 µg m−3, 78.3–209 µg m−3 and 57.2–140 µg m−3, respectively. The average PM2.5/PM10 ratio during haze days was 0.93 ± 0.05, which was higher than the average for normal days (0.89 ± 0.13) for all sites, indicating higher PM2.5 concentrations during haze days compared to normal days. An analysis of particle deposition in the human respiratory tract showed a higher total deposition fraction value during haze days than on non-haze days. The result from this study indicated that Malaysia and Thailand are highly affected by biomass burning activity during the dry seasons and the Southwest monsoon.

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“…The proportion of the remaining known phyla only accounted for 0.02-1.64% (Xi'an) and 0.01-3.25% (Linfen). In previous studies, Basidiomycota and Ascomycota were also the top two predominant fungi in PM 2.5 samples (i.e., in Beijing and Harbin, China) [61,62]. Basidiomycota and Ascomycota reproduced actively by releasing spores into the atmosphere [53].…”

Section: Community Compositions Of Microorganismsmentioning

confidence: 84%

Seasonal Variation Characteristics of Bacteria and Fungi in PM2.5 in Typical Basin Cities of Xi’an and Linfen, China

Wang

Liu

et al. 2021

Atmosphere

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Microorganisms existing in airborne fine particulate matter (PM2.5) have key implications in biogeochemical cycling and human health. In this study, PM2.5 samples, collected in the typical basin cities of Xi’an and Linfen, China, were analyzed through high-throughput sequencing to understand microbial seasonal variation characteristics and ecological functions. For bacteria, the highest richness and diversity were identified in autumn. The bacterial phyla were dominated by Proteobacteria, Actinobacteria, Firmicutes, and Bacteroidetes. Metabolism was the most abundant pathway, with the highest relative abundance found in autumn. Pathogenic bacteria (Pseudomonas, Acinetobacter, Serratia, and Delftia) were positively correlated with most disease-related pathways. Besides, C cycling dominated in spring and summer, while N cycling dominated in autumn and winter. The relative abundance of S cycling was highest during winter in Linfen. For fungi, the highest richness was found in summer. Basidiomycota and Ascomycota mainly constituted the fungal phyla. Moreover, temperature (T) and sulfur dioxide (SO2) in Xi’an, and T, SO2, and nitrogen dioxide (NO2) in Linfen were the key factors affecting microbial community structures, which were associated with different pollution characteristics in Xi’an and Linfen. Overall, these results provide an important reference for the research into airborne microbial seasonal variations, along with their ecological functions and health impacts.

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Exploring the effects of haze pollution on airborne fungal composition in a cold megacity in Northeast China

Cited by 13 publications

References 52 publications

Temporal dynamics in diversity and composition of the air mycobiome and dominant allergenic fungi in the subway environment

Temporal dynamics in diversity and composition of the air mycobiome and dominant allergenic fungi in the subway environment

Spatial–temporal variability and health impact of particulate matter during a 2019–2020 biomass burning event in Southeast Asia

Seasonal Variation Characteristics of Bacteria and Fungi in PM2.5 in Typical Basin Cities of Xi’an and Linfen, China

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