泡桐罹丛枝病之后,病株、病株的健枝、健株的叶片和皮部过氧化物酶同工酶(PO 同工酶)之间产生差异。罹病植株上健康叶片的 PO 同工酶的电泳带数有所增加,活性增强;病叶 PO同工酶活性较低;枝条皮部 PO 同工酶活性较叶片低;随季节的不同 PO 酶活性不同。 After Paulownia witches broom disease, there are differences between the diseased plants, diseased plants, healthy plants, and pericentrical peroxidase isoenzymes (PO isozymes). The number of electrophoresis bands of PO isozymes in healthy leaves on diseased plants increased, the activity increased; PO isozyme activity in diseased leaves was lower; the activity of PO isozymes in shoots was lower than that of leaves; with different PO enzyme activities different.