Neonectria fuckeliana is pathogenic to Pinus radiata in New Zealand
M. A. Dick A C and P. E. Crane BA Scion, New Zealand Forest Research Institute Ltd, Private Bag 3020, Rotorua, New Zealand 3046.
B Edmonton, Alberta, Canada T5R 3X1.
C Corresponding author. Email: margaret.dick@scionresearch.com
Australasian Plant Disease Notes 4(1) 12-14 https://doi.org/10.1071/DN09005
Submitted: 6 October 2008 Accepted: 23 December 2008 Published: 16 February 2009
Abstract
Stem malformation associated with stained sapwood, typically developing after pruning, has become a problem in some Pinus radiata (Monterey pine) plantations in southern regions of New Zealand. Neonectria fuckeliana (syn. Nectria fuckeliana) is the most commonly isolated fungus from affected trees. In order to critically assess the pathogenicity of this fungus, Koch’s Postulates were conducted under controlled conditions in the glasshouse and under field conditions in the forest plantation. The pathogen was recovered from diseased tissue; however, there were marked differences in individual tree response to infection as some inoculated trees did not become diseased.
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