Genetic hitch-hiking extends the range of coast live oak

Richard S. Dodd; Zara Afzal-Rafii; Wasima Mayer

Treesearch

Genetic hitch-hiking extends the range of coast live oak

Informally Refereed

Authors:

Richard S. Dodd, Zara Afzal-Rafii, Wasima Mayer

Year:

2006

Type:

General Technical Report

Station:

Pacific Southwest Research Station

Source:

In: Frankel, Susan J.; Shea, Patrick J.; and Haverty, Michael I., tech. coords. Proceedings of the sudden oak death second science symposium: the state of our knowledge. Gen. Tech. Rep. PSW-GTR-196. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 123-124

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Abstract

The northernmost range of coast live oak (Quercus agrifolia) is reported from the Ukiah Valley (Mendocino County, California). Here, field observations suggest that hybridization with interior live oak (Q. wislizeni) is important. Elsewhere in northern California, morphology of coast live oak can be highly variable (particularly foliar form) and this has commonly been attributed to "noise" from a polymorphic species belonging to a genus renowned for its variability. This variability can be worrisome to scientists working on sudden oak death, since it may result in confounding species in ecological and pathogenicity studies.

Parent Publication

Proceedings of the sudden oak death second science symposium: the state of our knowledge

Keywords

chloroplast DNA, introgression, nuclear DNA, Quercus agrifolia, Quercus wislizeni, red oaks

Citation

Dodd, Richard S.; Afzal-Rafii, Zara; Mayer, Wasima. 2006. Genetic hitch-hiking extends the range of coast live oak. In: Frankel, Susan J.; Shea, Patrick J.; and Haverty, Michael I., tech. coords. Proceedings of the sudden oak death second science symposium: the state of our knowledge. Gen. Tech. Rep. PSW-GTR-196. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 123-124