Fig. 2. One- and two-year-old peach stems inoculated with L. persoonii. Light micrograph of longitudinal section of peach bark and vascular cambial (VC) tissues seven days after inoculation with L. persoonii showing hyphal aggregations (H) in periderm and cortex regions and alteration of cambial derivatives (arrow). Colonization proceeding from right to left. x420.