Seasonal dynamics of airborne fungi in different caves of the Mogao Grottoes, Dunhuang, China

Wang, Wanfu; Ma, Xu; Ma, Yantian; Lin, Mao; Wu, Fasi; Ma, Xiaojun; An, Lu; Feng, Huyuan

doi:10.1016/j.ibiod.2010.05.005

Cited by 66 publications

(49 citation statements)

References 33 publications

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“…Temperature had the highest impact on the concentrations of ambient fungal spores, but the relative humidity and rain were inversely correlated to them (Wang et al, 2010).…”

Section: Worldwide Relevant Aeromycological Studiesmentioning

confidence: 97%

“…It has been demonstrated that the environmental factors such as meteorological and seasonal climatic factors Klarić & Pepeljnjak, 2006), the type of vegetation (Pepeljnjak & Šegvić, 2003), air pollution (Lin &Li, 2000), and human activities , affect the variety of air borne fungi. Numerous works on airborne fungal spores have been published worldwide with almost the same objectives to detect the dynamics of the aeromycota in associations with the biotic and abiotic factors of their surrounding environment, among those: India (Chandara & Chanada, 2000;Jothish & Nayar, 2004); Australia (Mitakakis & Guest, 2001); Chile (Ibanez et al, 2001), Poland (Stepalska &Wolek, 2005;Grinn-Gofroń & Bosiacka 2015) and In China (Wang et al, 2010). Only a limited number of aeromycological studies were conducted in the Middle East compared to other parts of the world, however the similar objectives were introduced.…”

Section: Introductionmentioning

confidence: 99%

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Dynamics (seasonal and intra-diurnal) of air-borne fungal spore population of Doha area, Qatar

Fayad

2016

Qatar University Life Science Symposium 2016: Biodiversity, Sustainability and Climate Change, With Perspectives From Qatar

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“…Temperature had the highest impact on the concentrations of ambient fungal spores, but the relative humidity and rain were inversely correlated to them (Wang et al, 2010).…”

Section: Worldwide Relevant Aeromycological Studiesmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Dynamics (seasonal and intra-diurnal) of air-borne fungal spore population of Doha area, Qatar

Fayad

2016

Qatar University Life Science Symposium 2016: Biodiversity, Sustainability and Climate Change, With Perspectives From Qatar

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“…It seems that, generally, dispersal limitation can be a key process in structuring the air microbiome [34]. Both biomass and biomass diversity, particularly of fungi, are higher in small and/or closed underground chambers [6]. In the comparatively far smaller Altamira Cave with its Palaeolithic paintings, a notable level of bacteria related to humans was reported, and the use of protective gloves, masks, and clothing was recommended in considering the case for re-opening the cave to the public [13].…”

Section: Tourist-derived Cave Air Biomassmentioning

confidence: 99%

Spacio-Temporal Distribution and Tourist Impact on Airborne Bacteria in a Cave (Škocjan Caves, Slovenia)

Mulec

Oarga-Mulec

Šturm³

et al. 2017

Diversity

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(1) Background: Airborne microbes are an integral part of a cave ecosystem. Cave allochtonous airborne microbiota, which occurs mainly during aerosolization from an underground river, from animals, and from visitors, is particularly pronounced in show caves. The impacts of tourists and natural river aerosolization on the cave air were estimated in large cave spaces within the Škocjan Caves; (2) Methods: Simultaneously with the measurements of atmospheric parameters, cultivable airborne bacteria were impacted, counted and identified using MALDI-TOF MS (Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight Mass Spectrometry); (3) Results: A mix of bacteria typically associated with humans and with natural habitats, including a large percentage of non-identified isolates, was found in the cave air. Few of the isolates were attributed to Risk Group 2. A strong positive correlation between tourist numbers and the rise in the concentration of airborne bacteria was indicated. Concentration of airborne bacteria rises to particularly high levels close to the underground river during periods of high discharge. A 10-times lower discharge reflected an approximately 20-times lower concentration of airborne bacteria; (4) Conclusions: Caves that are open and visited contain a diverse airborne microbiota originating from different sources. Enormous cave chambers that display relatively dynamic cave climate conditions do not normally support the enhancement of airborne bacterial concentrations.

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“…Fungi are dominant among cave microorganisms due to their high rate of dispersion, spore survival, and better capacity for colonization (Wang et al, 2010). Fungi act mainly as decomposers or parasites in caves (Santamaria and Faille, 2007;Yoder et al, 2009) and provide nutrients in assimilable forms for other organisms.…”

Section: Introductionmentioning

confidence: 99%

Terrestrial filamentous fungi from Gruta do Catão (São Desidério, Bahia, Northeastern Brazil) show high levels of cellulose degradation

Paula¹,

Montoya²,

Rodrigues³

et al. 2016

JCKS

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Subterranean environments are oligotrophic. However, few studies have investigated the composition and function of their terrestrial mycobiota. This study examined the functional role of filamentous cave fungi in cellulose degradation. Soil samples and dry sediment were collected in the surface epigean environment and two sites in the entrance and twilight zones inside Gruta do Catão in the São Desidério karst area, state of Bahia, Brazil. Fungi were cultured from the samples, and the total organic carbon, culturable microorganisms, and carbon and nitrogen microbial biomasses were estimated. All fungal strains were evaluated for cellulase production in carboxymethylcellulose synthetic medium, and the enzymatic indices were estimated. We observed a significant difference (p 0.05) in physical, chemical, and biological parameters between epigean soil and cave sediments by Tukey's test. We recovered a total of 20 isolates comprising the genera Aspergillus (50.0%), Penicillium (25.0%), Talaromyces (10.0%), Trichoderma (5.0%), Purpureocillium (5.0%) and Scopulariopsis (5.0%). The majority of the isolates (90%) showed cellulolytic activity, which is a higher percentage compared to that normally reported in the literature for sediments. Thus there is a high probability that the filamentous fungi act in nutrient cycling, thereby contributing to the quality and maintenance of the cave ecosystem. These results indicate that parameters such as total organic carbon, biomass, and relative humidity that tend to differ between caves and epigean environments, provide selective pressures for microorganisms that use alternative sources of energy and nutrients.

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Seasonal dynamics of airborne fungi in different caves of the Mogao Grottoes, Dunhuang, China

Cited by 66 publications

References 33 publications

Dynamics (seasonal and intra-diurnal) of air-borne fungal spore population of Doha area, Qatar

Dynamics (seasonal and intra-diurnal) of air-borne fungal spore population of Doha area, Qatar

Spacio-Temporal Distribution and Tourist Impact on Airborne Bacteria in a Cave (Škocjan Caves, Slovenia)

Terrestrial filamentous fungi from Gruta do Catão (São Desidério, Bahia, Northeastern Brazil) show high levels of cellulose degradation

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