Phytophthora pathogens threaten rare habitats and conservation plantings
DOI:
https://doi.org/10.24823/Sibbaldia.2020.288Abstract
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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inadvertent introduction of pathogens to California
restoration areas. California Agriculture, 72(4):
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BENNER, D., BLOMQUIST, C. & ROONEY-LATHAM,
S. (2019). Accreditation to improve restoration
program shows promise for pathogen prevention.
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Management Symposium, 25–27 June 2019, San
Francisco, CA.
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62 | Susan J. Frankel, Janice Alexander, Diana Benner, Janell Hillman & Alisa Shor
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GARBELOTTO, M. & HAYDEN, K.J. (2012). Sudden
oak death: interactions of the exotic oomycete
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hosts. Eukaryotic Cell, 11(11): 1313–1323.
GOHEEN, E.M., HANSEN, E.M., KANASKIE,
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SUTTON, W. (2002). Sudden oak death caused by
Phytophthora ramorum in Oregon. Plant Disease,
86(4): 441.
GOHEEN, E.M., KANASKIE, A., NAVARRO,
S. & HANSEN, E. (2017). Sudden oak death
management in Oregon tanoak forests. Forest
Phytophthoras, 7(1): 45–53.
GRÜNWALD, N.J., GARBELOTTO, M., GOSS,
E.M., HEUNGENS, K. & PROSPERO, S. (2012).
Emergence of the sudden oak death pathogen
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20(3): 131–138.
GRÜNWALD, N.J., GOSS, E.M. & PRESS, C.M.
(2008). Phytophthora ramorum: a pathogen with
a remarkably wide host range causing sudden
oak death on oaks and ramorum blight on woody
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Phytophthora pathogens threaten rare habitats and conservation plantings. (2020). Sibbaldia: The International Journal of Botanic Garden Horticulture, 18, 53-65. https://doi.org/10.24823/Sibbaldia.2020.288
