Risk assessment for Puccinia psidii becoming established in South Africa

J Roux; I Germishuizen; R Nadel; David J Lee; M J Wingfield; Geoff S Pegg

doi:10.1111/ppa.12380

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Risk assessment for Puccinia psidii becoming established in South Africa

Journal article

Open access

Peer reviewed

Risk assessment for Puccinia psidii becoming established in South Africa

J Roux, I Germishuizen, R Nadel, David J Lee, M J Wingfield and Geoff S Pegg

Plant Pathology, Vol.64(6), pp.1326-1335

2015

DOI: https://doi.org/10.1111/ppa.12380

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Abstract

eucalyptus

guava rust

GIS

myrtales

risk analyses

uredinales

Puccinia psidii, the causal agent of Myrtle rust, was first recorded from Latin America more than 100 years ago. It occurs on many native species of Myrtaceae in Latin America and also infects non-native plantation-grown Eucalyptus species in the region. The pathogen has gradually spread to new areas including Australia and most recently South Africa. The aim of this study was to consider the susceptibility of selected Eucalyptus genotypes, particularly those of interest to South African forestry, to infection by P. psidii. In addition, risk maps were compiled based on suitable climatic conditions and the occurrence of potential susceptible tree species. This made it possible to identify the season when P. psidii would be most likely to infect and to define the geographic areas where the rust disease would be most likely to establish in South Africa. As expected, variation in susceptibility was observed between eucalypt genotypes tested. Importantly, species commonly planted in South Africa show good potential for yielding disease tolerant material for future planting. Myrtle rust is predicted to be more common in spring and summer. Coastal areas, as well as areas in South Africa with sub-tropical climates are more conducive to outbreaks of the pathogen.

Details

Title: Risk assessment for Puccinia psidii becoming established in South Africa
Authors: J Roux (Author) - University of Pretoria, South Africa
I Germishuizen (Author) - Institute for Commercial Forestry Research (ICFR), South Africa
R Nadel (Author) - Institute for Commercial Forestry Research (ICFR), South Africa
David J Lee (Author) - University of the Sunshine Coast
M J Wingfield (Author) - University of Pretoria, South Africa
Geoff S Pegg (Author) - University of the Sunshine Coast
Publication details: Plant Pathology, Vol.64(6), pp.1326-1335
Publisher: Wiley-Blackwell Publishing Ltd.
Date published: 2015
DOI: 10.1111/ppa.12380
ISSN: 0032-0862
Copyright note: Copyright © 2015 Wiley-Blackwell Publishing Ltd. This is the accepted version of the following article: Roux, J., Germishuizen, I., Nadel, R., Lee, D. J., Wingfield, M. J. and Pegg, G. S. (2015), Risk assessment for Puccinia psidii becoming established in South Africa. Plant Pathology, 64: 1326-1335, which has been published in final form at doi: 10.1111/ppa.12380.
Organisation Unit: Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
Language: English
Record Identifier: 99449136302621
Output Type: Journal article

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