1. Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
2. Department of Genome Science and Technology, University of Tennessee-Knoxville, Knoxville, TN 37996, U.S.A.
3. UMR 1136 INRA-Université de Lorraine ‘Interactions Arbres/Microorganismes’, Laboratoire d’Excellence ARBRE, Centre INRA-Lorraine, 54280 Champenoux, France