Robert E. Pruitt1, 2, John L. Bowman2, 3
& Ueli Grossniklaus2, 41
Botany and Plant Pathology, Purdue University, West Lafayette, Indianapolis 47907-1155, USA.
2
Arabidopsis Molecular Genetics Course, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA.
3
Section of Plant Biology, One Shields Avenue, University of California at Davis, Davis, California 95616, USA.
4
Institute of Plant Biology & Zürich-Basel Plant Science Center, University of Zürich, Zollikerstrasse 107, CH-8008 Zürich, Switzerland.
Correspondence should be addressed to Ueli Grossniklaus grossnik@botinst.unizh.ch
