1. UMR 1136 INRA‐Nancy Université, Interactions Arbres/Microorganisms, INRA‐Nancy, 54280 Champenoux, France
2. Botanical Institute, University of Basel, CH‐4056 Basel, Switzerland
3. Molecular Wood Biotechnology and Technical Mycology, Büsgen‐Institute, Georg‐August‐University, D‐37077 Göttingen, Germany