Quambalaria species: increasing threat to eucalypt plantations in Australia

Pegg, G.S., Carnegie, A.J., Wingfiled, M.J. and Drenth, Andre (2009) Quambalaria species: increasing threat to eucalypt plantations in Australia. Southern Forests, 71 2: 111-114. doi:10.2989/SF.2009.71.2.4.819


Author Pegg, G.S.
Carnegie, A.J.
Wingfiled, M.J.
Drenth, Andre
Title Quambalaria species: increasing threat to eucalypt plantations in Australia
Formatted title
Quambalaria species: increasing threat to eucalypt plantations in Australia
Journal name Southern Forests   Check publisher's open access policy
ISSN 2070-2620
2070-2639
Publication date 2009-06-01
Sub-type Article (original research)
DOI 10.2989/SF.2009.71.2.4.819
Volume 71
Issue 2
Start page 111
End page 114
Total pages 4
Editor Dennis L. Owen
Place of publication South Africa
Publisher Southern African Institute of Forestry
Language eng
Subject C1
070505 Forestry Pests, Health and Diseases
060704 Plant Pathology
820101 Hardwood Plantations
Formatted abstract
Spotted gum (Corymbia citriodora subsp. variegata and C. maculata) is a valuable source of commercial timber and suitable for a wide range of different soil types in eastern Australia. The main biological constraint to further expansion of spotted gum plantations is Quambalaria shoot blight caused by the fungus Quambalaria pitereka. Surveys conducted to evaluate the impact of Quambalaria shoot blight have shown that the disease is present in all spotted gum plantations and on a range of Corymbia species and hybrids in subtropical and tropical regions surveyed in eastern Australia. More recently, Q. eucalypti has also been identified from a range of Eucalyptus species in these regions. Both pathogens have also been found associated with foliage blight and die-back of amenity trees and Q. pitereka in native stands of Corymbia species, which is the probable initial infection source for plantations. Infection by Q. pitereka commonly results in the repeated destruction of the growing tips and the subsequent formation of a bushy crown or death of trees in severe cases. In comparison, Q. eucalypti causes small, limited lesions and has in some cases been associated with insect feeding. It has not been recorded as causing severe shoot and stem blight. A better understanding of factors influencing disease development and host-pathogen interactions is essential in the development of a disease management strategy for these poorly understood but important pathogens in the rapidly expanding eucalypt (Corymbia and Eucalyptus spp.) plantation industry in subtropical and tropical eastern Australia.
Keyword CORYMBIA
QUAMBALARIA SHOOT BLIGHT
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Biological Sciences Publications
 
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Created: Tue, 10 Nov 2009, 22:42:24 EST by Hayley Ware on behalf of School of Biological Sciences