| |
|
|
|
Discovery of the eucalypt pathogen Quambalaria eucalypti infecting a non-Eucalyptus host in Uruguay
C. A.
Pérez A B E,
Z. W.
de Beer C,
N. A.
Altier D,
M. J.
Wingfield C,
R. A.
Blanchette A
A
Department of Plant Pathology, University of Minnesota, 495 Borlaug Hall, 1991 Upper Buford Circle, St Paul, MN 55108, USA.
B
Departamento de Protección Vegetal, Universidad de la República, Ruta 3, km 363, Paysandú, Uruguay.
C
Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa.
D
Instituto Nacional de Investigación Agropecuaria, Ruta 48, km 10, Canelones, Uruguay.
E
Corresponding author. Email: caperez@fagro.edu.uy
|  |
|
Australasian Plant Pathology 37(6) 600–604 http://dx.doi.org/10.1071/AP08063
Submitted: 29 March 2008
Accepted: 28 July 2008
Published online: 25 September 2008
Abstract
Quambalaria eucalypti, a serious pathogen of Eucalyptus, is believed to be native to Australia and introduced into various southern hemisphere countries, including Uruguay. In this study we record the discovery of Q. eucalypti causing leaf lesions on Myrceugenia glaucescens, a tree native to Uruguay. The identity of the pathogen was confirmed using DNA sequence comparisons of the internal transcribed spacer (ITS) region of the rDNA operon, as well as morphological characteristics. This is the first record of the pathogen on a host other than Eucalyptus. It clearly indicates a disturbing example of an alien invasive pathogen having undergone a host-shift from non-native Eucalyptus to a native tree in Uruguay.
Keywords:
host jump, Myrtaceae, plant pathogens.
|
|
|
|
| |
|
|
|
Australasian Plant Disease Notes
