摘要
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。
The infection of poplar leaf rust fungi(Melampsora magnusiana)resulted in an increase in peroxidase and phynelalanine ammonia lyase(PAL)activities in dise-ased poplar leaves.The increase of the enzymes level was greater in highly sus-ceptible clones than in highly resistant ones.The appearance of the peak of pero-xidase activity coincided with the symptom emergence,distinctly different bet-ween highly resistant and highly susceptible clones.PAL activity reached a maxi-mum in all tested clones after 10 days of inoculation.Infection also caused changes of isoperoxidase patterns.Additional isoperoxidase bands appeared in most of infected clones.However,these changes could not reflect the different resistance of the hosts.
出处
《植物病理学报》
CAS
CSCD
北大核心
1989年第2期95-100,共6页
Acta Phytopathologica Sinica
