杜鹃花属植物上广义斑痣盘菌目成员多为植物病原真菌或内生真菌，其中一些种类能够引起杜鹃花的严重病害，造成经济损失。寄生在杜鹃花属植物上的斑痣盘菌目真菌具有显著的专化性，甚至器官专化性。本项目拟采用nLSU rDNA、RPB2、mtSSU rDNA等多基因序列综合分析构建杜鹃花属植物上斑痣盘菌目真菌系统进化树，以及用IST和 RPB2基因序列构建杜鹃花属植物系统进化树，研究杜鹃花属植物上广义斑痣盘菌目真菌与其寄主之间在进化过程中的共同物种形成、寄主切换、寄主跃迁；阐明寄主对杜鹃花属植物上的斑痣盘菌目真菌种、属界定的重要性。该研究为极为复杂的斑痣盘菌目和刺皮盘菌目系统学研究提供基础数据，并推进建立一个更加自然合理的斑痣盘菌目系统。这一研究在真菌与寄主植物的协同进化和真菌的分子系统学方面有重要理论意义；同时对这一具有古老性状的观赏植物的保护和真菌所致的病害防治有重要意义。

Many members of the Rhytismatales on Rhododendron are plant pathogens or endophytics, and some of these cause economically significant plant diseases. Members of the Rhytismatales parasitic on Rhododendron have a conspicuous host specialization, even strict organic specialization. The analyses of multigenes with nLSU, rDNA, RPB2, mtSSU rDNA etc are used for this project to erect a phylogenetic tree of Rhytismatales on Rhododendron and their host phylogenetic tree with ITS and RPB2. Compared with two phylogenetic trees, the cospeciation, host-shift, host-jumps of the Rhytismatales on Rhododendron will be analyzed. We try to find the significance of the hosts for the delimitations of genera and species within the Rhytismatales. These study are very important for erection of a natural and rational phylogenetics for Rhytismatales in future, This project has very important meanings for the studies of co-evolution of fungi and plant, fungal molecular phylogenetics,plant conservation and plant pathology.