1. Department of Genetics, Tree Pathology Cooperative Programme (TPCP), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, 0002, South Africa
2. Department of Genetics, University of Pretoria, Pretoria, 0002, South Africa
3. New Zealand Forest Research Institute Ltd., Private Bag 3020, Rotorua, New Zealand
4. CSIRO Forestry and Forest Products, PO BOX E4008, Kingston ACT 2604, Australia
5. Tree Pathology Cooperative Programme (TPCP), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, 0002, South Africa