Progress report on the evaluation of the susceptibility of the holm oak (Quercus ilex) forest ecosystem to Phytophthora ramorum

Abstract

In preliminary studies on the susceptibility of plant members of the holm oak (Quercus ilex) forest, detached leaves of several woody species were highly susceptible when inoculated with zoospore suspensions of local isolates of Phytophthora ramorum (Moralejo and Hernández 2002). Since then, there have been reports of natural infections by P. ramorum on leaves and shoots of Q. ilex in the UK, and new findings on Viburnum tinus in nurseries across Europe. Taken together, this indicates that at least some areas of Mediterranean vegetation with a prevalence of the Arbutus unedo-Viburnum tinus-Quercus ilex association should be closely monitored. Yet, there are, so far, no outdoor infections in the Mediterranean basin.

Parent Publication

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

Citation

Moralejo, Eduardo; Descals, Enrique. 2006. Progress report on the evaluation of the susceptibility of the holm oak (Quercus ilex) forest ecosystem to Phytophthora ramorum. 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: 183-184