MSA - Ecology/Pathology
Zhang, Ning .
Molecular detection of dogwood anthracnose fungus.
Dogwood anthracnose, caused by an asexual filamentous fungus Discula destructiva Redlin, is a disease of several indigenous Cornus species of North America. First reported in the 1970s, the infections have been confirmed from British Columbia to Northern California in the western North America. In the east, it distributed from Vermont to as far south as Georgia and Alabama. The pathogen has caused dramatic devastation to native dogwood populations and the widespread loss of Cornus species has had great impact on forest ecosystems. In the early 2000ís, the disease was discovered in nurseries of Italy and Germany, probably through trade. The origin of D. destructiva in North America remains a mystery. Itís sudden appearance near the U.S. ports, the low population genetic diversity and the fact that the Asian native dogwood species (C. kousa) is resistant to the disease indicate that the pathogen was introduced, probably from Asia, carried by the kousa dogwood host. However, no investigation has been done to test the hypothesis. To facilitate the studies on the origin and spread of the pathogen, a fast and accurate detection method using real-time PCR was developed, which is able to detect and quantify D. destructiva from the host tissue. The method also can be applied on early disease diagnosis, and would be valuable for disease management.
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1 - Rutgers University, Plant Biology and Pathology, 59 Dudley Rd., Foran Hall, New Brusnwick, NJ, 08901, USA
Presentation Type: Poster:Posters for Topics
Location: Event Tent/Cliff Lodge
Date: Tuesday, July 28th, 2009
Time: 5:30 PM