1. Forestry and Agricultural Biotechnology Institute (FABI), Department of Microbiology and Plant Pathology, University of Pretoria, Pretoria 0002, South Africa
2. Forestry and Agricultural Biotechnology Institute (FABI) and Department of Genetics, University of Pretoria, South Africa
3. Forestry and Agricultural Biotechnology Institute (FABI)
4. NAGREF-Institute of Mediterranean Forest Ecosystems, Terma Alkmanos, Athens, Greece