Max-Planck Institute for Terrestrial Microbiology, Department of Organismic Interactions Karl-von-Frisch-Strasse, 35043 Marburg, Germany.|Max-Planck Institute for Terrestrial Microbiology, Department of Organismic Interactions Karl-von-Frisch-Strasse, 35043 Marburg, Germany.|Max-Planck Institute for Terrestrial Microbiology, Department of Organismic Interactions Karl-von-Frisch-Strasse, 35043 Marburg, Germany.|Max-Planck Institute for Terrestrial Microbiology, Department of Organismic Interactions Karl-von-Frisch-Strasse, 35043 Marburg, Germany.