Relationship between the genetic characteristics of Botrytis sp. airborne inoculum and meteorological parameters, seasons and the origin of air masses

Grey mould is a worldwide disease on many economically important crops. It is caused by two fungal species, Botrytis cinerea and B. pseudocinerea , which are mainly airborne dispersed. Although several studies have considered the abundance of airborne inoculum of B. cinerea in models forecasting the...

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Bibliographic Details
Published in:Aerobiologia 2015-09, Vol.31 (3), p.367-380
Main Authors: Leyronas, Christel, Halkett, Fabien, Nicot, Philippe C.
Format: Article
Language:English
Subjects:
Agricultural sciences
Allergology
Atmospheric Protection/Air Quality Control/Air Pollution
Botrytis
Botrytis cinerea
Earth and Environmental Science
Environment
Environmental Engineering/Biotechnology
Environmental Health
Life Sciences
OriginalPaper
Plant Pathology
Pneumology/Respiratory System
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Summary:Grey mould is a worldwide disease on many economically important crops. It is caused by two fungal species, Botrytis cinerea and B. pseudocinerea , which are mainly airborne dispersed. Although several studies have considered the abundance of airborne inoculum of B. cinerea in models forecasting the risk of grey mould epidemics, the genetic characteristics of this inoculum are poorly known. In the present study, airborne inoculum of B. cinerea and B. pseudocinerea was collected on 29 dates over a 2.5-year period on a site in south-eastern France. The 683 sampled isolates were genotyped with nine microsatellites markers, and 616 were identified as B. cinerea . The genetic structure of B. cinerea airborne inoculum was inferred with Bayesian assignment tests. Eight genetic clusters were identified. Cluster abundance showed temporal variation and was statistically linked to the season ( P  = 0.0009) and the origin of air masses ( P  
ISSN:0393-5965
1573-3025
DOI:10.1007/s10453-015-9370-x