摘要
新疆阿克苏地区由Valsa mali var.pyri、Valsa sordida引起的腐烂病是制约库尔勒香梨发展的重要病害,为研究库尔勒香梨感染腐烂病后与防御酶活性的变化关系,以库尔勒香梨为试验材料,分别采集同一株树不同发病组织和不同发病程度枝条韧皮部,研究其抗性相关酶活性变化。结果表明:病害在完全侵入组织后,SOD活性呈下降的趋势,在发病组织,POD、CAT活性最高,PAL在病健交界处活性最高。随着发病程度的增加,SOD活性整体呈先上升后下降的趋势,POD活性呈逐渐上升的趋势,CAT活性先下降后上升,PAL活性先上升后下降,PPO总体呈下降趋势。库尔勒香梨抗性相关酶活性呈现不同变化响应Valsa侵染。在Valsa与库尔勒香梨互作系统中,抗性酶可作为抗病性和检测病害指标,为检测库尔勒香梨腐烂病发病程度提供理论依据。
In order to study the changes of resistance related enzyme activities in Korla pear infected with Valsa canker,Collecting different diseased tissues and phloem of branches of the same tree in Korla pear to study the changes of resistance related enzyme activities.The results showed that after the disease completely invaded tissues,SOD activity showed a downward trend,POD and CAT activities were the highest in the diseased tissues,PAL activity was the highest at the junction of disease and health.With the increase of the severity of the disease,SOD activity increased first and then decreased,POD activity increased gradually,CAT activity decreased first and then increased,PAL activity increased first and then decreased,and PPO activity generally decreased.The resistance related enzyme activity of Korla pear showed different changes in response to Valsa infection。
作者
唐丽
邵延慧
李春艳
张王斌
TANG Li;SHAO Yanhui;LI Chunyan;ZHANG Wangbin(Talimu University,Xinjiang Alaer 843300)
出处
《林业科技》
2024年第3期6-11,共6页
Forestry Science & Technology
基金
国家自然基金“新疆枣园林果树木腐烂病菌遗传多样性及致病力分化研究(31660034)”。
关键词
库尔勒香梨
腐烂病
抗性相关酶
Korla pear
Valsa canker
resistance-related enzyme
