落叶松-杨栅锈菌重寄生菌的生物学特性研究  

The Biological Characteristics of a Hyperparasite Melampsora larici-populina

作　　者：田爱霞 吴春芳[2] 梁英梅[3] 

机构地区：[1]甘肃靖远师范学校,甘肃靖远730600 [2]青海大学昆仑学院,青海西宁810016 [3]筑波大学生命环境研究科

出　　处：《西北林学院学报》2005年第4期108-111,共4页Journal of Northwest Forestry University

基　　金：国家自然科学基金项目(39970616)

摘　　要：通过分离培养,发现落叶松-杨栅锈菌(Melampsora larici-populina)的重寄生菌主要有Cladosporium tenuissimum、Alternaria sp.Penicillium sp..对C.tenuissimum的生物学特性研究表明,该菌在PDA培养基上的生长适温为25～30℃,在pH为3～11时均可生长和产孢,最适pH为4～6.在对碳源的利用上,以果糖、葡萄糖生长最好,麦芽糖、淀粉、乳糖、甘露醇、木糖、蔗糖等均可以生长.随着葡萄糖浓度的增加,其菌落直径、菌丝致密程度和产孢量也随之增加.孢子萌发的相对湿度为90%～100%,在水滴中萌发率最高.分生孢子的致死温度为45℃,持续时间10 min.A hyperparasite fungi of Melampsora larici-populina was identified as Penicillium sp. , Alternaria sp. and Cladosporiurn tenuissirnum from the uredosori of Melarnpsora larici-populina . The optimum growth temperature for C. tenuissimum is 25℃ to 30℃ on PDA medium. The C. tenuissimum grows well at pH 3-11, and optimum pH was 4-6. Among 8 carbon sources, fructose and glucose are better than others. The conidia can germinate in relative humidity of 90%-100% but best in the drip of water. Dead temperature of spore is 45 ℃ for 10 minute.

关 键 词：落叶松-杨栅锈菌 重寄生菌 生物学特性 

分 类 号：S763.11[农业科学—森林保护学]