Holocryphia eucalypti on Tibouchina urvilleana in Australia
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Tibouchina spp. (Melastomataceae) are native to South America, but have been planted as ornamentals in many southern hemisphere countries. The Melastomataceae are members of the Myrtales and are close relatives of the Myrtaceae, to which the genus Eucalyptus belongs. The recent discovery of several Chrysoporthe spp. on Tibouchina spp. has prompted a more detailed survey for other Eucalyptus pathogens that might occur on this tree. In this study, the discovery in Australia of Holocryphia eucalypti, a Eucalyptus pathogen, on diseased stems of Tibouchina urvilleana is reported. Characterisation of this fungus was based on morphology and comparisons of β-tubulin gene sequences. Greenhouse pathogenicity tests, including isolates of H. eucalypti from Eucalyptus spp. in Australia and South Africa, showed that the isolates of H. eucalypti from T. urvilleana were significantly more pathogenic on T. urvilleana than isolates from Eucalyptus.
Additional keywordscanker disease Chrysoporthe Cryphonectria Endothia forestry
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- Appel DN, Stipes RJ (1986) A description of declining and blighted pin oaks in eastern Virginia. Journal of Arboriculture 12, 155–158.Google Scholar
- Gryzenhout M, Rodas CA, Portales JM, Clegg P, Wingfield BD, Wingfield MJ (2006b) DNA sequence comparisons and morphological characteristics reveal novel hosts of the Eucalyptus canker pathogen Chrysoporthe cubensis and a new Chrysoporthe species from Colombia. Mycological Research 110, 833–845. doi: 10.1016/j.mycres.2006.02.010CrossRefPubMedGoogle Scholar
- Old KM, Murray DIL, Kile GA, Simpson J, Malafant KWJ (1986) The pathology of fungi isolated from eucalypt cankers in south-eastern Australia. Australian Forestry Research 16, 21–36.Google Scholar
- SAS Statistical Software (1989) ‘SAS/STAT User’s Guide. Version 6. Vol. 1 & 2.’ 4th edn. (SAS Institute Inc.: Cary, NC)Google Scholar
- Shear CL, Stevens NE, Tiller RJ (1917) Endothia parasitica and related species. United States Department of Agriculture Bulletin 380, 1–82.Google Scholar
- Stipes RJ, Phipps PM (1971) A species of Endothia associated with a canker disease of pin oak (Quercus palustris) in Virginia. Plant Disease Reporter 55, 467–469.Google Scholar
- Swofford DL (2002) ‘PAUP*. Phylogenetic analysis using parsimony (*and other methods)’. Version 4. (Sinauer Associates: Sunderland, MA)Google Scholar
- Venter M, Myburg H, Wingfield BD, Coutinho TA, Wingfield MJ (2002) A new species of Cryphonectria from South Africa and Australia, pathogenic to Eucalyptus. Sydowia 54, 98–117.Google Scholar
- Walker TJ, Old KM, Murray DIL (1985) Endothia gyrosa on Eucalyptus in Australia with notes on some other species of Endothia and Cryphonectria. Mycotaxon 23, 353–370.Google Scholar