Sudden Oak Death is a disease that has killed hundreds of thousands of trees in California and Oregon. It has infected large areas of live oak and tanoaks forests. This microscope footage shows the zoospores of Phytophthora ramorum, the causal agent of SOD, emerging from the sporangia. Under the right environmental conditions infectious zoospores are released and will infect new host trees. …
Mar 292009
Mar 282009
This program examines the disease Sudden Oak Death (SOD) which is attacking oaks and now other trees and plants in the San Francisco Bay Area. Program shows the symptoms of SOD on oaks, explains the cause of the disease, and outlines steps people can take to help slow its spread. Includes interviews with UC horticulturist Pavel Svihra who discovered and named this disease, UC Davis plant pathologist David Rizzo who discovered the pathogen responsible, and Forester Kent Julin of the Marin …