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叶锈菌的侵染使寄主的过氧化物酶和苯丙氨酸解氨酶(PAL)活性均增加,且高感无性系的酶活性变化幅度较高抗无性系的大。其中,过氧化物酶活性高峰出现的时间因抗、感无性系受侵染后显症时间的不同而有差异;但PAL酶活性高峰则不论抗、感病无性系,均在接种后第10天左右出现。侵染还可引起过氧化物酶同工酶谱的变化,使多数供试无性系有新酶带出现。但过氧化物酶同工酶谱的变化不能明确反映寄主的抗病性差异。
Infection by leaf rust increased the activities of peroxidase and phenylalanine ammonia lyase (PAL) in the host plants, and increased the changes of the enzyme activities in the higher susceptible clones. Among them, the peak time of peroxidase activity appeared due to the resistance and susceptibility of infected clones after the different manifestations of time vary, but the peak of PAL activity regardless of resistance, susceptible clones, were inoculated after 10 Appear around the clock Infection can also cause changes in the peroxidase isoenzyme pattern, so that most of the test clones with a new enzyme band appears. However, changes in peroxidase isozymes do not clearly reflect the differences in host disease resistance.