Variability in aggressiveness of Quambalaria pitereka isolates

Pegg, G. S., Shuey, L. S., Carnegie, A. J., Wingfield, M. J. and Drenth, A. (2011) Variability in aggressiveness of Quambalaria pitereka isolates. Plant Pathology, 60 6: 1107-1117. doi:10.1111/j.1365-3059.2011.02478.x

Author Pegg, G. S.
Shuey, L. S.
Carnegie, A. J.
Wingfield, M. J.
Drenth, A.
Title Variability in aggressiveness of Quambalaria pitereka isolates
Formatted title
Variability in aggressiveness of Quambalaria pitereka isolates
Journal name Plant Pathology   Check publisher's open access policy
ISSN 0032-0862
Publication date 2011-12
Sub-type Article (original research)
DOI 10.1111/j.1365-3059.2011.02478.x
Volume 60
Issue 6
Start page 1107
End page 1117
Total pages 11
Place of publication Oxford, United Kingdom
Publisher Wiley-Blackwell
Collection year 2012
Language eng
Formatted abstract
Quambalaria shoot blight, caused by the fungal pathogen Quambalaria pitereka, is a serious disease of eucalypt plantations in Australia. The aggressiveness of four Q. pitereka isolates was compared on a range of host genera, species, provenances and clones. Isolates differed substantially in their aggressiveness, with two consistently showing higher levels of aggressiveness based on incidence and severity of disease and lesion size. Isolates derived from Corymbia citriodora subsp. variegata (Ccv) and C. torelliana were shown to have a relatively restricted host range, with lesions but no sporulation found on Eucalyptus species, Angophora species other than A. costata and Corymbia species other than Ccv, the host of origin. The level of aggressiveness toward the different provenances of spotted gum and C. torelliana varied between isolates and there was evidence of some isolate × host interaction within provenances of Ccv. The two methods of inoculation used in this study, spray and spot inoculation, gave similar results. However, the fact that the spot inoculation method was labour-intensive was a disadvantage limiting the numbers of isolates and hosts that can be tested.
Keyword Australia
Fungal disease
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Agriculture and Food Sciences
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