1. Max Planck Institute for Marine Microbiology; Celsiusstr. 1 Bremen 28359 Germany
2. CIGoM, Instituto de Biotecnologia, UNAM, Av. Universidad 2001; C.P.62210 Cuernavaca Morelos Mexico
3. MARUM, University of Bremen; Germany
4. Division of Microbial Ecology, Department of Microbiology and Ecosystem Science; University of Vienna; Althanstr. 14 Vienna 1090 Austria