Phytophthora pathogenicity
genes and Phytophthora identification
Synopsis
 We
are interested in identifying Phytophthora genes that function
in the infection of host plants in order to contribute to our
basic understanding of this process. These genes may also serve
as targets for the development of novel control strategies. Genes
of potential interest have been cloned. The image shown is of
a tree killed by the P. cinnamomi, the "Dieback Fungus".
We have generated monoclonal antibodies specific for P. cinnamomi
and P. nicotianae, and have developed a reliable dipstick
assay for the rapid identification of these Phytophthora
species. The dipstick assay is protected by patents in Australia
and the USA (Hardham '93).
Hardham, A.R. and Cahill.D.M. (1993) Detection of motile organisms
in a sample. Australian patent No. 48117/93 granted 1 May 1997.
US Patent No. 5817472 granted 6 October 1998. European patent
under examination.
Value
Diagnosis and control of Phytophthora would both be of
major benefit to Australia. Phytophthora diseases cause
widespread economic losses in important crops and major environmental
problems in native ecosystems. Economic losses have been estimated
to exceed $200m per annum. P. cinnamomi is a problem throughout
the world.
Contacts
hardham@rsbs.anu.edu.au
BioTech RSBS
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