Symptoms of necrotic lesion in P. armandii produced by ophiostomatoid fungi at 90 d.p.i. (A) Control (2% MEA). (B) Graphilbum parakesiyea. (C) Leptographium qinlingense. (D) O. shennongense. (E) Ophiostoma sp. 1. (F) O. shennongense + L. qinlingense. Scale bars: 5 mm (A–F).