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April 1, 2004  CONTACT: Katie Palmieri, (510) 847-5482, palmieri@nature.berkeley.edu Wood rose found to be host of sudden oak death pathogen
USDA Animal and Plant Health Inspection Services (APHIS), along with the California Department of
Food and Agriculture (CDFA), are adding wood rose (Rosa gymnocarpa) to
the list of nearly 30 confirmed Phytophthora ramorum
host plants.
As a host plant, wood rose will fall under Phytophthora ramorum regulations, requiring inspection before being certified for shipment from California
nurseries.
“The genus Rosa is the
quintessential ornamental genus, probably one of the most widespread across the
globe. Although no infected roses have been found in commercial nurseries
yet, this finding should prompt surveys of roses sold commercially (especially
wood rose) to ascertain their infection status,” said Matteo Garbelotto, a
professor and forest pathologist extension specialist at UC Berkeley.
Based on the wood rose findings, hybrid roses, most often found in nurseries,
are being laboratory tested by UC Berkeley scientists for their susceptibility
to Phytophthora ramorum.
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