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Abstract
Phytophthora kernoviae (
Pk) and
Phytophthora ramorum (
Pr) are recently introduced pathogens in United Kingdom (U.K.) woodlands.
Pk is also an emerging threat to coastal heathland where it infects
Vaccinium myrtillus. In infested woodlands, an invasive plant,
Rhododendron ponticum, supports sporulation of both pathogens, providing primary inoculum for infection of
Fagus sylvatica.
R. ponticum has been removed from several infested woodlands; however, the long term efficacy of
R. ponticum removal for disease management is unknown. The epidemiology of
Pk in infested heathland is not yet understood. The aggressiveness of
Pk in U.K. woodlands and heathland elevate the biosecurity concern associated with its potential introduction to North American forests.
Parent Publication
Citation
Fichtner, Elizabeth J.; Rizzo, David M.; Webber, Joan Kirk, Susan A.; Whybrow, Alistair. 2010. Persistence of Phytophthora ramorum and Phytophthora kernoviaein U.K. natural areas and implications for North American forests. In: Frankel, Susan J.; Kliejunas, John T.; Palmieri, Katharine M. 2010. Proceedings of the Sudden Oak Death Fourth Science Symposium. Gen. Tech. Rep. PSW-GTR-229. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. pp. 83-84
