Journal article
Phosphite concentration: its effect on phytotoxicity symptoms and colonisation by Phytophthora cinnamomi in three understorey species of Eucalyptus marginata forest
Australasian Plant Pathology, Vol.29(2), pp.86-95
2000
Abstract
Pre-treatment of plants with foliar sprays of 0.2, 0.5 and 2% phosphite restricted colonisation by Phytophthora cinnamomi in inoculated stems of Adenanthos barbiger and Daviesia decurrens, and led to a reduction in the isolation of P. cinnamomi from these stems in comparison with unsprayed plants. In plants treated with 2% phosphite,P. cinnamomi was not isolated from D. decurrens but was isolated from 22% of the stems of A. barbiger. InXanthorrhoea preissii, colonisation by, and isolation of,P. cinnamomi from inoculated roots was not significantly affected by pre-treatment of the foliage with 0.2, 0.5 and 2% phosphite. Very low concentrations of phosphite were detected in the roots of X. preissii (maximum mean of 2.2 g/g dry weight), in comparison with the phosphite concentrations measured in the foliage of A. barbiger and D. decurrens plants treated with phosphite (maximum means of 80 and 871 g/g dry weight, respectively). Treatment with 0.2% phosphite resulted in minimal phytotoxicity in each of the three species, whereas treatment with 2% phosphite led to the development of severe phytotoxicity symptoms. This study indicates that phosphite has potential for the management of P. cinnamomi in native plant communities.
Details
- Title
- Phosphite concentration: its effect on phytotoxicity symptoms and colonisation by Phytophthora cinnamomi in three understorey species of Eucalyptus marginata forest
- Authors/Creators
- R.A. Pilbeam (Author/Creator) - Murdoch UniversityI.J. Colquhoun (Author/Creator) - Alcoa (Australia)B.L. Shearer (Author/Creator) - Department of Land Resource ManagementG.E.St.J. Hardy (Author/Creator) - Murdoch University
- Publication Details
- Australasian Plant Pathology, Vol.29(2), pp.86-95
- Publisher
- CSIRO Publishing
- Identifiers
- 991005541099307891
- Copyright
- © Australasian Plant Pathology Society
- Murdoch Affiliation
- School of Biological Sciences and Biotechnology; Centre for Phytophthora Science and Management
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.97 Plant Pathology
- 3.97.1439 Phytophthora Management
- Web Of Science research areas
- Plant Sciences
- ESI research areas
- Plant & Animal Science