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用２种浓度的杨树溃疡病病菌毒素处理具有不同抗性的杨树愈伤组织，引起了显著的超微结构变化。其变化包括：细胞壁变形消解，中胶层分解；质壁分离，质膜破裂，线粒体局部破裂、分解成颗粒甚至空胞化；细胞核在处理的后期核膜破裂，核仁亦部分分解。损害发生得最早、最严重的是细胞膜。杨树未处理的愈伤组织具有健康组织细胞所具有的完整结构。经过毒素处理，抗病品种比感病品种膜系列受害轻，对细胞损伤高浓度毒素处理比低浓度的要大。
Treating poplar callus with different resistances with two concentrations of poplar canker pathogenic toxin resulted in significant ultrastructural changes. The changes include: cell wall deformation digestion, the gel layer decomposition; plasmolysis, plasma membrane rupture, mitochondria local rupture, decomposed into particles or even mitotic; nucleus ruptured in the late treatment of nuclear membrane, nucleolus also partially decomposed. Damage occurs the earliest, the most serious is the cell membrane. Poplar untreated callus has the complete structure of healthy tissue cells. After the toxin treatment, the disease-resistant cultivars were harder than the susceptible cultivars, and the treatment of high concentrations of toxins in cell damage was greater than in low concentrations.