New pests and diseases: Sudden oak death syndrome fells 3 oak species

By M. Garbelotto, P. Švihra, David M. Rizzo. 2001

108 citations recorded by the source corpus.

“Sudden oak death” refers to a complex set of symptoms that has already culminated in the death of tens of thousands of California oak trees. Now confirmed in seven coastal counties, SOD attacks California tanoak, coast live oak and California black oak. Although several fungal species and the western oak bark beetle and ambrosia beetles have been associated with the syndrome, we now have solid evidence that a newly discovered Phytophthora species is the primary causal agent. This Phytophthora species was recently isolated in rhododendron as well; it may be the same species that was isolated, but not described, on rhododendrons in Germany in 1993. The discovery of SOD on rhododendron has serious implications. The disease may well be present at the ecosystem scale, and its appearance on an ornamental plant suggests the possibility of wider dissemination. A team of UC scientists has developed an integrated approach to managing this disease, including practices to enhance tree health. Early disease detection and targeted chemical treatment may also hold some promise for disease management. In addition, we have developed a molecular probe that will enable rapid identification of SOD from any infected part of the plant. Ultimately, the fate of the oak species affected by SOD will be determined by the levels of disease resistance present in natural populations of these trees.

Subfields: Cell Biology, Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/3144675b4f7ed04a64bf100fa642946a33cb25e4

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Citations in the corpus

Support vector machines for predicting distribution of Sudden Oak Death in California (2005, background): “After about a week, the pathogen can be identified based on morphological traits (Garbelotto et al., 2001).”
Sudden oak death: endangering California and Oregon forest ecosystems (2003, background): “The symptoms that define it were first recognized during 1994–95, and over the next few years it reached epidemic proportions in oak forests along approximately 300 km of the central California coast (Garbelotto et al. 2001).”
Landscape Dynamics of the Spread of Sudden Oak Death (2002, methodology): “…wildlife habitat, soil erosion properties, fire broad multi-stem canopy (Pavlik et al., 1991), and the disease seems to disproportionately affect overstory trees (Swiecki andregime, and aesthetic value of thousands of hectares of coastal forest ( McPherson et al., 2000; Garbelotto et al., 2001).”
Non-oak native plants are main hosts for sudden oak death pathogen in California (2003, background): “RESEARCH ARTICLE ▲ A B C D E F HG http://danr.ucop.edu/calag • JANUARY-MARCH 2003 19 forests along approximately 185 miles (300 kilometers) of the Central Coast of California during the past 7 years (Rizzo et al. 2002b; Garbelotto et al. 2001).”