Airborne and Grain Dust Fungal Community Compositions Are Shaped Regionally by Plant Genotypes and Farming Practices
| Autor: | Dessislava Savova-Bianchi, Anne Oppliger, Fabio Mascher, Guilain Mbayo, Stefan Kellenberger, Alexandre H. Hirzel, Hélène Niculita-Hirzel, Loïc Pellissier |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Edible Grain Indoor bioaerosol Air Microbiology Biodiversity Beta diversity Biology Applied Microbiology and Biotechnology Crop Soil 03 medical and health sciences Occupational Exposure Humans Phylogeny Aerosols Abiotic component Air Pollutants Ecology Public and Environmental Health Microbiology Fungi food and beverages Dust Phylogenetic diversity 030104 developmental biology Agronomy Alpha diversity Food Science Biotechnology |
| Zdroj: | Applied and Environmental Microbiology. 82:2121-2131 |
| ISSN: | 1098-5336 0099-2240 |
| DOI: | 10.1128/aem.03336-15 |
| Popis: | Chronic exposure to airborne fungi has been associated with different respiratory symptoms and pathologies in occupational populations, such as grain workers. However, the homogeneity in the fungal species composition of these bioaerosols on a large geographical scale and the different drivers that shape these fungal communities remain unclear. In this study, the diversity of fungi in grain dust and in the aerosols released during harvesting was determined across 96 sites at a geographical scale of 560 km 2 along an elevation gradient of 500 m by tag-encoded 454 pyrosequencing of the internal transcribed spacer (ITS) sequences. Associations between the structure of fungal communities in the grain dust and different abiotic (farming system, soil characteristics, and geographic and climatic parameters) and biotic (wheat cultivar and previous crop culture) factors were explored. These analyses revealed a strong relationship between the airborne and grain dust fungal communities and showed the presence of allergenic and mycotoxigenic species in most samples, which highlights the potential contribution of these fungal species to work-related respiratory symptoms of grain workers. The farming system was the major driver of the alpha and beta phylogenetic diversity values of fungal communities. In addition, elevation and soil CaCO 3 concentrations shaped the alpha diversity, whereas wheat cultivar, cropping history, and the number of freezing days per year shaped the taxonomic beta diversity of these communities. |
| Databáze: | OpenAIRE |
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