Abstract
1Department of Microbiology and Center for Biological Resource Recovery, University of Georgia. Athens, Georgia 30602
2German Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany
3Department of Microbiology, University of Göttingen, 37077 Göttingen, Germany
4Zentrum für Ultrastrukturforschung and Ludwig Boltzmann-Institut für Molekulare Nanotechnologie, Universität für Bodenkultur, A-1180 Vienna, Austria