Fig. 6

Scanning electron micrographs of transverse sections of saman (Samanea saman) wood uninoculated and inoculated with three different species of Xylaria. A Uninoculated saman wood showing sound cell walls, B–D Wood inoculated with Xylaria curta (B), Xylaria 2 (C) and Xylaria 1 (D). Type 1 soft rot attack is present in cells of saman wood with all three Xylaria isolates. B and C show moderate amounts of degradation with some coalescing of cavities in secondary walls. Some cells had extensive cavity formation, but the middle lamella remained intact. Erosion of secondary walls (Type 2 soft rot attack) and Type 1 cavity formation can be seen in D. Bar = 100 µm in A, 25µm in B–D