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Ecological genetics of the Bromus tectorum (Poaceae) - Ustilago Bullata (Ustilaginaceae): A role for frequency dependent selection?


Meyer, Susan E.; Nelson, David L.; Clement, Suzette; Ramakrishnan, Alisa. 2010. Ecological genetics of the Bromus tectorum (Poaceae) - Ustilago Bullata (Ustilaginaceae): A role for frequency dependent selection? American Journal of Botany. 97(8): 1304-1312.

doi: 10.3732/ajb.0900261

Evolutionary processes that maintain genetic diversity in plants are likely to include selection imposed by pathogens. Negative frequency-dependent selection is a mechanism for maintenance of resistance polymorphism in plant - pathogen interactions. We explored whether such selection operates in the Bromus tectorum - Ustilago bullata pathosystem. Gene-for-gene relationships between resistance and avirulence loci have been demonstrated for this pathosystem.

Keywords: balanced polymorphism, Bromus tectorum, cheatgrass, frequency-dependent selection, gene-for-gene model, head smut disease, Poaceae, resistance, Ustilaginaceae, Ustilago bullata, virulence


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http://www.fs.fed.us/rm/pubs_other/rmrs_2010_meyer_s003.pdf

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Title: RMRS Other Publications: Ecological genetics of the Bromus tectorum (Poaceae) - Ustilago Bullata (Ustilaginaceae): A role for frequency dependent selection?
Electronic Publish Date: March 15, 2012
Last Update:
March 15, 2012

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