Journal article

Potential susceptibility of Australian native plant species to branch dieback and bole canker diseases caused by Phytophthora ramorum

KB Ireland, D Hueberli, B Dell, IW Smith, DM Rizzo, GE St J Hardy

PLANT PATHOLOGY | WILEY | Published : 2012

Abstract

Susceptibility to branch dieback caused by Phytophthora ramorum was tested using a detached branch assay for 66 Australian native plant species sourced from established gardens and arboreta in California. Six of these species were further tested for their susceptibility to bole cankers caused by P. ramorum using a sealed log assay. Isopogon formosus and Eucalyptus denticulata were identified as potentially highly susceptible Australian branch dieback hosts. Thirteen potentially tolerant Australian host species included Banksia attenuata, B. marginata, E. haemastoma, E. regnans, Pittosporum undulatum and Billardiera heterophylla. Eucalyptus regnans was identified as a potentially highly susce..

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Funding Acknowledgements

The authors thank M. Jones, L. Snyder and the UC Davis Rizzo Laboratory for assistance with experiments, as well as the UC Davis Arboretum, UC Berkeley Botanical Garden, UC Santa Cruz Arboretum and the San Francisco Strybing Arboretum for supplying plant material. The project was supported by the Australian Government's Cooperative Research Centres Program and the Department of Sustainability, Environment, Water, Population and Communities.