1. Laboratory of Mycology; Institute of Botany; Nature Research Centre; Vilnius Lithuania
2. Vokė Branch of Lithuanian Research Centre for Agriculture and Forestry; Trakų Vokė Lithuania
3. Ukrainian Research Institute of Forestry & Forest Melioration; Kharkiv Ukraine
4. Department of Plant and Soil Science; Forestry and Agricultural Biotechnology Institute (FABI); University of Pretoria; Pretoria South Africa