1. State Key Laboratory of Agricultural Microbiology Huazhong Agricultural University Wuhan 430070 P.R. China
2. Department Biologie I Universität München Menzinger Str. 67 D-80638 München Germany
3. MIGAL-Galilee Research Institute S. Industrial Zone Kiryat Shmona Israel
4. Faculty of Sciences and Technology Tel-Hai Academic College Upper Galilee Israel