1. Biosystems and Agricultural Engineering, University of Kentucky, 128 C.E. Barnhart Building, Lexington, Kentucky 40546, United States
2. Joint Institute of Biological Science, BioEnergy Science Center & Center for BioEnergy Innovation, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
3. Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
4. Department of Forestry, Wildlife, and Fisheries, Center for Renewable Carbon, University of Tennessee Institute of Agriculture, Knoxville, Tennessee 37996, United States