Rocky Mountain Research Station Publications
RMRS Online Publication - Journal
Articles, External Publications, and Special Reports
The quick and the deadly: Growth versus virulence in a seed bank pathogen
Meyer, Susan E.; Stewart, Thomas E.; Clement, Suzette. 2010. The quick and the deadly: Growth versus virulence in a seed bank pathogen. New Phytologist. 187: 207-216.
We studied the relationship between virulence (ability to kill nondormant Bromus tectorum seeds) and mycelial growth index in the necrotrophic seed pathogen Pyrenophora semeniperda. Seed pathosystems involving necrotrophs differ from those commonly treated in traditional evolution-of-virulence models in that host death increases pathogen fitness by preventing germination, thereby increasing available resources. Because fast-germinating, nondormant B. tectorum seeds commonly escape mortality, we expected virulence to be positively correlated with mycelial growth index.
Keywords: Bromus tectorum, cheatgrass, Drechslera campanulata, necrotrophic pathogenesis, Pyrenophora semeniperda (black fingers of death), seed bank pathogen, virulence evolution
About PDFs: For best results, do not open the PDF in your Web browser. Right-click on the PDF link to download the PDF file directly to your computer. Click here for more PDF help.
PDF File Size: 450 K
Title: RMRS Other
Publications: The quick and the deadly: Growth versus virulence
in a seed bank pathogen
Electronic Publish Date: March 15, 2012
Last Update: March 15, 2012
RMRS Publications | Order a publication | Contact Us