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dc.contributor.author Roy, B. A. en
dc.contributor.author Kirchner, J. W. en
dc.contributor.author Christian, Caroline E. en
dc.contributor.author Rose, L. E. en
dc.date.accessioned 2013-07-17T18:36:43Z en
dc.date.available 2013-07-17T18:36:43Z en
dc.date.issued 2001 en
dc.identifier.citation Roy, B.A., Kirchner, J.W., Christian, C.E. and Rose, L.E. (2001) High disease incidence and apparent disease tolerance in a North American Great Basin plant community. Evolutionary Ecology. 14: 421-438. en
dc.identifier.issn 0269-7653 en
dc.identifier.uri http://hdl.handle.net/10211.1/1732 en
dc.description The final publication is available at link.springer.com. Link to abstract: http://link.springer.com/article/10.1023/A%3A1010997429365 en
dc.description.abstract Pattern and consequences of plant disease at the community level have rarely been studied. We surveyed fungal infections in a Great Basin community of perennial shrubs over 4 years. Repeat surveys in fixed plots and along transects showed that disease incidence in the dominant perennial species was often very high, with up to 100% of all individuals infected. Despite the widespread prevalence of infection, and its severity on individual plants (which sometimes had over 1/3 of their leaves covered in pustules), its effects on survival and flowering were undetectably small. Thus, this perennial community appears to be stable, despite widespread disease. There are two potential explanations for this pattern; either the pathogens have evolved to be avirulent, or the hosts have become tolerant to being infected. Avirulence is not likely, because multiple infections are common in this system, and multiple infections have been shown in other species to favor strains that are faster reproducing and thus more virulent. Instead, it is more likely that tolerance has evolved in these host species, because infection in each year is practically inevitable and because the host plants are long-lived, giving little opportunity for new resistance genotypes to evolve. en
dc.description.sponsorship This work was supported, in part, by Swiss National Fund grant 3100-046865.96 to B.A. Roy, and N.S.F. grant EAR-9357931 to J.W. Kirchner en
dc.language.iso en_US en
dc.publisher Evolutionary Ecology en
dc.subject plant diseases en
dc.subject North American Great Basin en
dc.subject community ecology en
dc.subject avirulence en
dc.title High Disease Incidence and Apparent Disease Tolerance in a North American Great Basin Plant Community en
dc.type Article en
dc.relation.journal Evolutionary Ecology en
dc.contributor.sonomaauthor Christian, Caroline E. en


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