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    Author(s): Jennifer Parke; Bradley Collins; Barb Lachenbruch; Everett Hansen
    Date: 2010
    Source: 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. 87
    Publication Series: General Technical Report (GTR)
    PDF: View PDF  (12.37 KB)

    Description

    Tanoak (Lithocarpus densiflorus) is highly susceptible to sudden oak death caused by Phytophthora ramorum. Symptoms include dying crowns, bleeding cankers, and, eventually, death of infected trees. The cause of mortality is not well understood, but we showed previously that naturally infected mature trees have reduced sap flow and reduced hydraulic conductivity. One possible mechanism for this is the presence of tyloses in xylem vessels formed in response to P. ramorum infection.

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    Citation

    Parke, Jennifer; Collins, Bradley; Lachenbruch, Barb; Hansen, Everett. 2010. Effects of Phytophthora ramorum Infection on hydraulic conductivity and tylosis formation in Tanoak sapwood. 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. 87

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