Abstract
1Department of Microbiology, University of Georgia, Athens, Georgia 30602, and Institut für Mikrobiologie, Universität Gottingen, 37077 Göttingen, Germany
3Department of Marine Sciences and Institute of Ecology, University of Georgia, Athens, Georgia 30602, and Institut für Mikrobiologie, Universität Gottingen, 37077 Göttingen, Germany
2University of Georgia, Athens, Georgia 30602, and Institut für Mikrobiologie, Universität Gottingen, 37077 Göttingen, Germany