1. Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
2. Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, United States
3. Center for Bioenergy Innovation, Oak Ridge, Tennessee 37830, United States
4. Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
5. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
6. Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Athens, Georgia 30602, United States
7. Department of Crop and Soil Sciences, University of Georgia, Athens, Georgia 30602, United States
8. Department of Plant Biology, University of Georgia, Athens, Georgia 30602, United States