1. All-Russian Research Institute for Agricultural Microbiology (ARRIAM), 3 Podbelsky Chaussee, 196608 Saint Petersburg, Russia
2. Dokuchaev Soil Science Institute, Pyzhyovskiy Lane 7, 119017 Moscow, Russia
3. Applied Ecology Department, St. Petersburg University (SPbU), 7/9 Universitetskaya Emb., 199034 Saint Petersburg, Russia