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Phosphite and its effect on lesion development and phenolic accumulation in the roots of clonal Eucalyptus marginata, resistant and susceptible to Phytophthora cinnamomi, innoculated with phosphite tolerant and sensitive isolates of P. cinnamomi

Jackson, T, Burgess, T. and Hardy, G.E.St.J. (1997) Phosphite and its effect on lesion development and phenolic accumulation in the roots of clonal Eucalyptus marginata, resistant and susceptible to Phytophthora cinnamomi, innoculated with phosphite tolerant and sensitive isolates of P. cinnamomi. In: 11th Biennial Conference of the Australasian Plant Pathology Society, 29 September - 2 October, Perth, Western Australia.

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Abstract

Phosphite inhibits the in vitro and in vivo growth of a number of Oomycetes, of which P. cinnamomi is particularly sensitive. However, P. cinnamomi isolates from the northern jarrah forrest were found to vary significantly in their sensitivity to phosphite in vitro, with a 20 times difference between most and least tolerant isolates. The current study examined two isolates (most sensitive and most tolerant to phosphite) in order to determine the role of phosphite in protecting the roots of resistant and susceptible clonal jarrah from invasion by phosphite tolerant and sensitive P. cinnamomi isolates in the form of reduced lesion development and accumulation of phenolics.

Publication Type: Conference Item
Murdoch Affiliation: School of Biological Sciences and Biotechnology
URI: http://researchrepository.murdoch.edu.au/id/eprint/14903
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