1. School of Integrative Plant Science, Cornell University, Ithaca, New York, USA
2. Department of Agronomy, Purdue University, West Lafayette, Indiana, USA
3. Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
4. Department of Microbiome Science, Max Planck Institute for Developmental Biology, Tübingen, Germany
5. Department of Biological Sciences, University of the Sciences, Philadelphia, Pennsylvania, USA
6. U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California, USA
7. Joint BioEnergy Institute, Emeryville, California, USA
8. Department of Microbiology, Cornell University, Ithaca, New York, USA