1. State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
2. Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, North Carolina 27695
3. Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, North Carolina 27695
4. College of Forestry, Shandong Agricultural University, Taian, Shandong 271018, China
5. Department of Forestry, National Chung-Hsing University, Taichung, 40227, Taiwan
6. Electrical and Computer Engineering, North Carolina State University, Raleigh, North Carolina 27695
7. W.M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695
8. Department of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina 27695