ATTENTION: The software behind KU ScholarWorks is being upgraded to a new version. Starting July 15th, users will not be able to log in to the system, add items, nor make any changes until the new version is in place at the end of July. Searching for articles and opening files will continue to work while the system is being updated.
If you have any questions, please contact Marianne Reed at mreed@ku.edu .
Virulence changes in Uromyces appendiculatus after five asexual generations on a cultivar of bean (Phaseolus vulgaris)
dc.contributor.author | Alexander, Helen M. | |
dc.contributor.author | Groth, J. V. | |
dc.contributor.author | Roelfs, A. P. | |
dc.date.accessioned | 2014-10-07T14:04:59Z | |
dc.date.available | 2014-10-07T14:04:59Z | |
dc.date.issued | 1985-01-01 | |
dc.identifier.citation | Alexander, Helen M.; Groth, J.V.; Roelfs, A.P. (1985). "Virulence changes in Uromyces appendiculatus after five asexual generations on a cultivar of bean (Phaseolus vulgaris)." Phytopathology, 75(4):449-453. http://www.dx.doi.org/10.1094/Phyto-75-449 | |
dc.identifier.issn | 0031-949X | |
dc.identifier.uri | http://hdl.handle.net/1808/15193 | |
dc.description | This is the publisher's version, also available electronically from http://www.apsnet.org/publications/phytopathology/backissues/Documents/1985Abstracts/Phyto75_449.htm | |
dc.description.abstract | A field population of Uromyces appendiculatus, the bean rust pathogen, was obtained from the susceptible cultivar Pinto 111 in southwestern Minnesota, and maintained for five asexual generations on a partially resistant bean cultivar, Slimgreen. Changes in latent period, pustule size, and urediniospore production on Slimgreen and Pinto 111 over the generations were small or not detectable. In contrast, there was a large increase in the proportion of the pathogen population virulent on bean cultivar US#3 and large decreases in the proportion virulent on the cultivars Early Gallatin, Roma, and B1349 over the course of the experiment. Although Minnesota populations of U. appendiculatus are polymorphic for virulence on all four cultivars (virulence frequencies between 15 and 55%), none of the four is grown in the state in more than small amounts. These experimental results illustrate that changes in virulence gene frequencies may be independent of pathogen exposure to host resistance. | |
dc.publisher | American Phytopathological Society | |
dc.subject | correlated response to selection | |
dc.subject | pathogenicity association | |
dc.subject | selection | |
dc.subject | “unnecessary” virulence | |
dc.title | Virulence changes in Uromyces appendiculatus after five asexual generations on a cultivar of bean (Phaseolus vulgaris) | |
dc.type | Article | |
kusw.kuauthor | Alexander, Helen M. | |
kusw.kudepartment | Ecology and Evolutionary Biology | |
dc.identifier.doi | 10.1094/Phyto-75-449 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |