1. Department of Ecology and Evolutionary Biology, University of Connecticut , Storrs, CT 06269 , USA
2. Institute for Systems Genomics, University of Connecticut , Storrs, CT 06269 , USA
3. Department of Molecular and Cell Biology, University of Connecticut , Storrs, CT 06269 , USA
4. Atlantic Forestry Center, Canadian Forest Service, Natural Resources Canada , Fredericton, NB E3B 5P7 , Canada
5. Department of Biological Sciences, University of Notre Dame , Notre Dame, IN 46556 , USA
6. The Center for Tree Science, The Morton Arboretum , Lisle, IL 60532 , USA
7. USDA Forest Service, Northern Research Station , West Lafayette, IN 47906 , USA
8. USDA Forest Service, Eastern Region State, Private and Tribal Forestry , West Lafayette, IN 47906 , USA