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    Author(s):  Susan J. Frankel;  Janice Alexander;  Diana Benner;  Janell Hillman; Alisa Shor
    Date: 2020
    Source: Sibbaldia: The International Journal of Botanic Garden Horticulture
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (1.0 MB)

    Description

    Phytophthora pathogens are damaging native wildland vegetation including plants in restoration areas and botanic gardens. The infestations threaten some plants already designated as endangered and degrade high-value habitats. Pathogens are being introduced primarily via container plant nursery stock and, once established, they can spread to adjacent areas where plant species not previously exposed to pathogens may become infected. We review epidemics in California – caused by the sudden oak death pathogen Phytophthora ramorum Werres, De Cock & Man in ‘t Veld and the first USA detections of P. tentaculata Kröber & Marwitz, which occurred in native plant nurseries and restoration areas – as examples to illustrate these threats to conservation plantings.

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    Citation

    Frankel, Susan J.; Alexander, Janice; Benner, Diana; Hillman, Janell; Shor, Alisa. 2020. Phytophthora pathogens threaten rare habitats and conservation plantings. Sibbaldia: The International Journal of Botanic Garden Horticulture. 18: 53-65. https://doi.org/10.23823/Sibbaldia/2020.288

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    Keywords

    Restoration, ex situ conservation, sudden oak death, Phytophthora tentaculata

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https://www.fs.usda.gov/treesearch/pubs/59623