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- Title
Pathogenicity of 21 newly described <italic>Phytophthora</italic> species against seven Western Australian native plant species.
- Authors
Belhaj, R.; McComb, J.; Burgess, T. I.; Hardy, G. E. St. J.
- Abstract
The pathogenicity of some <italic>Phytophthora</italic> species recently described from Western Australia, together with <italic>P. cinnamomi</italic> as a control, was tested against seven Western Australian native plant species in the glasshouse. Host species were <italic>Banksia grandis</italic>,<italic> B. littoralis</italic>,<italic> B. occidentalis</italic>,<italic> Casuarina obesa</italic>,<italic> Corymbia calophylla</italic>,<italic> Eucalyptus marginata</italic> and <italic>Lambertia inermis</italic>. Twenty‐two <italic>Phytophthora</italic> species were grown on a vermiculite, millet seed and V8 substrate and used as soil inoculum when the plant hosts were approximately 3 months old. Pathogenicity was assessed after 6 weeks and plants were scored for death, root damage, and percentage reduction of shoot growth compared with control plants. The pathogenicity of <italic>P. cinnamomi</italic> was confirmed. <italic>Phytophthora niederhauserii</italic> was shown to be similar to <italic>P. cinnamomi</italic> in pathogenicity and of concern ecologically. Other species that killed one or more hosts were <italic>P. boodjera</italic>,<italic> P. constricta</italic>,<italic> P. elongata</italic>,<italic> P. moyootj</italic> and <italic>P. rosacearum</italic>, while <italic>P. condilina</italic>,<italic> P. gibbosa</italic>,<italic> P. gregata</italic>,<italic> P. litoralis</italic> and <italic>P</italic>. ‘personii’ caused significant reduction to shoot and/or root growth, but did not kill plants. Host species susceptible to the highest number of <italic>Phytophthora</italic> species were <italic>B. grandis</italic>,<italic> B. littoralis</italic>,<italic> B. occidentalis</italic> and <italic>E. marginata</italic>. No <italic>Phytophthora</italic> species tested killed <italic>C. calophylla</italic>.
- Subjects
PHYTOPHTHORA; MICROBIAL virulence; PLANT species; JARRAH; VERMICULITE
- Publication
Plant Pathology, 2018, Vol 67, Issue 5, p1140
- ISSN
0032-0862
- Publication type
Article
- DOI
10.1111/ppa.12827