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Pollen-associated microbiome correlates with pollution parameters and the allergenicity of pollen.
PLoS ONE 11:e0149545 (2016)
Pollen allergies have been rapidly increasing over the last decades. Many allergenic proteins and non-allergenic adjuvant compounds of pollen are involved in the plant defense against environmental or microbial stress. The first aim of this study was to analyze and compare the colonizing microbes on allergenic pollen. The second aim was to investigate detectable correlations between pollen microbiota and parameters of air pollution or pollen allergenicity. To reach these aims, bacterial and fungal DNA was isolated from pollen samples of timothy grass (Phleum pratense, n = 20) and birch trees (Betula pendula, n = 55). With this isolated DNA, a terminal restriction fragment length polymorphism analysis was performed. One result was that the microbial diversity on birch tree and timothy grass pollen samples (Shannon/Simpson diversity indices) was partly significantly correlated to allergenicity parameters (Bet v 1/Phl p 5, pollen-associated lipid mediators). Furthermore, the microbial diversity on birch pollen samples was correlated to on-site air pollution (nitrogen dioxide (NO2), ammonia (NH3), and ozone (O3)). What is more, a significant negative correlation was observed between the microbial diversity on birch pollen and the measured NO2 concentrations on the corresponding trees. Our results showed that the microbial composition of pollen was correlated to environmental exposure parameters alongside with a differential expression of allergen and pollen-associated lipid mediators. This might translate into altered allergenicity of pollen due to environmental and microbial stress.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Respiratory Symptoms; Airborne Pollen; Cell Responses; Bacteria; Plants; Diversity; Allergy; Stress; Soil; Rna
ISSN (print) / ISBN
1932-6203
Journal
PLoS ONE
Quellenangaben
Volume: 11,
Issue: 2,
Article Number: e0149545
Publisher
Public Library of Science (PLoS)
Publishing Place
Lawrence, Kan.
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Research Unit Microbe-Plant Interactions (AMP)
Research Unit Environmental Simulation (EUS)
Institute of Biochemical Plant Pathology (BIOP)
Institute of Environmental Medicine (IEM)
Research Unit Environmental Simulation (EUS)
Institute of Biochemical Plant Pathology (BIOP)
Institute of Environmental Medicine (IEM)