1. Department of Entomology and Plant Pathology, University of Tennessee , Knoxville, TN 37996 , USA
2. Genome Sequencing Center, HudsonAlpha Institute for Biotechnology , Huntsville, AL 35806 , USA
3. Department of Forestry and Natural Resources, University of Kentucky , Lexington, KY 40506 , USA
4. Department of Ecosystem Science and Management, Pennsylvania State University , University Park, PA 16802 , USA
5. College of Forest Resources and Environmental Science, Michigan Tech University , Houghton, MI 49931 , USA
6. College of Agriculture, Food and Natural Resources, University of Missouri , Columbia, MO 65211 , USA
7. Horticultural Science, North Carolina State University , Raleigh, NC 27695 , USA
8. Department of Biology, Pennsylvania State University , University Park, PA 16802 , USA
9. Forest Tree Molecular Cytogenetics Laboratory, USDA-FS, SRS-4160, Department of Ecology & Conservation Biology, Texas A&M University , College Station, TX 77843 , USA
10. Department of Biological Sciences, University of Notre Dame , Notre Dame, IN 46556 , USA
11. Department of Forest Genetics and Forest Tree Breeding, University of Göttingen , Göttingen, Lower Saxony 37077 , Germany