Journal
FUNGAL ECOLOGY
Volume 6, Issue 4, Pages 302-308Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.funeco.2013.03.008
Keywords
Ascospore production; Epidemiology; Invasive pathogen; Leaf physiology; Microscopy; Real-time PCR
Funding
- Norwegian Forest and Landscape Institute
- Research Council of Norway [203822/E40]
Ask authors/readers for more resources
Shoot dieback disease of European ash caused by the ascomycete Hymenoscyphus pseudoalbidus threatens ash on a continental scale. A spore sampler placed in a diseased ash forest in Southern Norway, coupled with microscopy and DNA-based fungal species-specific real-time PCR assays, was employed to profile diurnal and within-season variation in infection pressure by ascospores of H. pseudoalbidus and the potentially co-existing non-pathogenic Hymenoscyphus albidus. Hymenoscyphus pseudoalbidus was found to be predominant in the stand. Massive simultaneous liberation, by active discharge of pathogen ascospores in the morning, peaked in mid-Jul. to mid-Aug. Accumulation of pathogen DNA on leaflets of current-year leaves reached a high level plateau phase before appearance of autumn coloration, suggesting that pathogen establishment in leaves is terminated before the onset of leaf senescence. (c) 2013 Elsevier Ltd and The British Mycological Society. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available