Institution: | (1) Institute of Plant Biology, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland;;(2) Institute of Plant Biology, University of Fribourg, 1700 Fribourg, Switzerland;(3) Laboratoire de Biologie Microbienne, Université de Lausanne, 1015 Lausanne, Switzerland;(4) Institute of Biology III, RWTH Aachen, 52056 Aachen, Germany |