Beech leaf colonization by the endophyte Apiognomonia errabunda dramatically depends on light exposure and climatic conditions. - Bahnweg,G..; Heller,W..; Stich,S..; Knappe,C..; Betz,G..; Heerdt,C..; Kehr,R..D..; Ernst,D..; Langebartels,C..; Nunn,A..J..; Rothenburger,J..; Schubert,R..; et al. (Plant Biology, 2005)