Radiation, biological diversity and host-parasite interactions in wildroses, rust fungi and insects

野玫瑰、锈菌和昆虫的辐射、生物多样性和宿主-寄生虫相互作用

• 批准号: 5362294
• 负责人: Professor Dr. Roland Brandl
• 金额: --
• 依托单位: Arbeitsgruppe Spezielle Botanik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5362294?language=en
• 关键词: Radiation; biological; diversity; host; parasite

One of the major tasks in evolutionary biology is to explain how interspecific interactions influence the dynamics of evolutionary processes and enables radiation and genesis of biological diversity. In roses sect. Caninae, the dog-roses, the radiation process strongly depends on the genetic constitution of the pollen grain. The biological diversity to be challenged by selection is generated by a heterogamous and matroclinal reproduction system. By analyzing the genetic distance and phylogenetic relationships between rose taxa and their ability to create geno- and thus biodiversity via genetic pollen-variability, we determine a base line for the explanation of the subsequent radiation processes of the two host dependent parasite groups, the insects and rust fungi. We analyze the interaction between each host-parasite system and between the two parasite groups. The major question is: how does the radiation and diversity of the hosts translate into the radiation and diversity of the parasites and what is the role of rust-insect interactions? By an analysis of the dog-roses radiation process and the unfolding of biological diversity in this group, we will be able to understand the level of interaction (co-evolution, co-speciation, individualistic interaction) with rust fungi and insects.

进化生物学的主要任务之一是解释种间相互作用如何影响进化过程的动态并实现生物多样性的辐射和起源。玫瑰宗内。犬科动物、犬玫瑰的辐射过程很大程度上取决于花粉粒的遗传构成。受到选择挑战的生物多样性是由异配和母系生殖系统产生的。通过分析玫瑰类群之间的遗传距离和系统发育关系，以及它们通过遗传花粉变异创造基因和生物多样性的能力，我们确定了解释两个寄主依赖的寄生虫群体（昆虫和锈菌）后续辐射过程的基线。我们分析每个宿主-寄生虫系统之间以及两个寄生虫群体之间的相互作用。主要问题是：宿主的辐射和多样性如何转化为寄生虫的辐射和多样性以及锈病-昆虫相互作用的作用是什么？通过分析狗玫瑰辐射过程和该群体中生物多样性的展开，我们将能够了解锈菌与昆虫的相互作用（共同进化、共同物种形成、个体相互作用）水平。