1. Plant Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
2. Genomic Analysis Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
3. Bioinformatics Program, University of California at San Diego, La Jolla, CA 92093, USA.
4. The Scripps Translational Science Institute and the Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
5. Howard Hughes Medical Institute, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.