Australasian Plant Pathology Australasian Plant Pathology Society
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RESEARCH ARTICLE (Open Access)

Uredo rangelii, a taxon in the guava rust complex, newly recorded on Myrtaceae in Australia

A. J. Carnegie A F , J. R. Lidbetter B , J. Walker A , M. A. Horwood A , L. Tesoriero C , M. Glen D and M. J. Priest E

A Forest Biosecurity and Resource Assessment, Biosecurity Research, Industry and Investment NSW, Forest Science Centre, PO Box 100, Beecroft, NSW 2119, Australia.

B Forest and Rangelands Ecosystems, Industry and Investment NSW, Forest Science Centre, PO Box 100, Beecroft, NSW 2119, Australia.

C Elizabeth Macarthur Agricultural Institute, Industry and Investment NSW, Private Bag 4008, Narellan, NSW 2567, Australia.

D Tasmanian Institute of Agricultural Research, University of Tasmania, Private Bag 12, Hobart, Tas. 7001, Australia.

E Orange Agricultural Institute, Industry and Investment NSW, Forest Road, Orange, NSW 2800, Australia.

F Corresponding author. Email: angus.carnegie@industry.nsw.gov.au

Australasian Plant Pathology 39(5) 463-466 https://doi.org/10.1071/AP10102
Submitted: 26 May 2010  Accepted: 4 June 2010   Published: 2 August 2010

Abstract

Uredo rangelii (myrtle rust) is reported for the first time in Australia – detected on 22 April 2010 – from Agonis flexuosa, Callistemon viminalis and Syncarpia glomulifera. This taxon is morphologically distinct from Puccinia psidii, the cause of guava rust, but DNA sequence data place it in the P. psidii complex. Surveys up to the end of May 2010 have detected U. rangelii on cultivated shrubs and trees at four properties (two cut flower farms and two wholesale nurseries) on the Central Coast of New South Wales, with no records in native forest thus far. Containment operations are currently underway on infected properties.

Additional keywords: biosecurity, Eucalyptus rust.


Acknowledgements

The authors thank the owners of IP 1 for their cooperation; Matt Nagel and Bettina Gollnow (Industry and Investment NSW), Doug Beckers (National Parks and Wildlife Service), Stacey Azzopardi and Megan Blake (Australian Quarantine and Inspection Service) for assistance with surveys; Jack Simpson for confirming the identification as U. rangelii; and Caroline Mohammed and Jack Simpson for comments on the manuscript.


We also acknowledge the Australasian Plant Pathology Society for funding the production of the colour figures and Open Access.


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