|
Fig. 1. One- and two-year-old peach stems inoculated with L. persoonii. Stereomicrograph of longitudinal section through pith (P), xylem (X), and bark (B) (tissues are between opposite oriented arrows), sampled seven days after inoculation with Leucostoma persoonii, showing four polysaccharide-rich reaction zones (large arrows). Colonization from left to right had proceeded in the bark through the first zone and was almost to the second. x15. |
