Fungal and bacterial communities in indoor dust follow different environmental determinants.
    
    
        
    
    
        
        PLoS ONE 11:e0154131 (2016)
    
    
    
      
      
	
	    People spend most of their time inside buildings and the indoor microbiome is a major part of our everyday environment. It affects humans' wellbeing and therefore its composition is important for use in inferring human health impacts. It is still not well understood how environmental conditions affect indoor microbial communities. Existing studies have mostly focussed on the local (e.g., building units) or continental scale and rarely on the regional scale, e.g. a specific metropolitan area. Therefore, we wanted to identify key environmental determinants for the house dust microbiome from an existing collection of spatially (area of Munich, Germany) and temporally (301 days) distributed samples and to determine changes in the community as a function of time. To that end, dust samples that had been collected once from the living room floors of 286 individual households, were profiled for fungal and bacterial community variation and diversity using microbial fingerprinting techniques. The profiles were tested for their association with occupant behaviour, building characteristics, outdoor pollution, vegetation, and urbanization. Our results showed that more environmental and particularly outdoor factors (vegetation, urbanization, airborne particulate matter) affected the community composition of indoor fungi than of bacteria. The passage of time affected fungi and, surprisingly, also strongly affected bacteria. We inferred that fungal communities in indoor dust changed semi-annually, whereas bacterial communities paralleled outdoor plant phenological periods. These differences in temporal dynamics cannot be fully explained and should be further investigated in future studies on indoor microbiomes.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Airborne Bacterial; Temporal Variability; Atopic Sensitization; Seasonal Variability; Microbial Diversity; Particulate Matter; Outdoor Air; Endotoxin; Homes; Allergens
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2016
    
 
    
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        2016
    
 
    
    
        ISSN (print) / ISBN
        1932-6203
    
 
    
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	    Volume: 11,  
	    Issue: 4,  
	    Pages: ,  
	    Article Number: e0154131 
	    Supplement: ,  
	
    
 
    
        
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            Publisher
            Public Library of Science (PLoS)
        
 
        
            Publishing Place
            Lawrence, Kan.
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        30202 - Environmental Health
30503 - Chronic Diseases of the Lung and Allergies
    
 
    
        Research field(s)
        Environmental Sciences
Genetics and Epidemiology
    
 
    
        PSP Element(s)
        G-504900-001
G-503900-001
G-504911-001
    
 
    
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        Erfassungsdatum
        2016-05-12