Gen-Expression und postzygotische Isolation bei einem jungen Artenpaar von Coregonen (Coregonus spec.)

一对年轻的 coregones（Coregonus 规格）中的基因表达和合子后分离

• 批准号: 30020084
• 负责人: Professor Dr. Arne Nolte
• 金额: --
• 依托单位: Département de biologie
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/30020084?language=en
• 关键词: Gen; Expression; und; postzygotische; Isolation

The evolution of barriers to reproduction is a key step in speciation and the generation of biological diversity. Previous work on postzygotic Isolation has shown that pronounced sterility or inviability evolve slowly and occur among taxa that have been separated for long times. This project is designed to analyse the nature of postzygotic Isolation in young species pairs of whitefishes (Coregonus spec.) in order to learn about initial stages of reproductive barriers. Gene expression profiling will be used to screen for traits in which hybrids differ from their parents. Genes that display disproportionate misexpression or in which hybrids strongly diverge from their parents may be involved in postzygotic Isolation. The evolutionary significance of these candidates can be assessed in natural study Systems using population genetic analyses. The statistical approaches will reveal, whether divergence in gene expression is driven by natural selection and whether misexpression of genes contributes to postzygoticIsolation.

生殖障碍的演变是物种形成和生物多样性产生的关键步骤。先前关于合子后隔离的研究表明，明显的不育或不活力进化缓慢，并且发生在已经分离了很长时间的分类群中。本项目旨在分析白鲑（Coregonus spec.）以了解生殖障碍的初始阶段。基因表达谱将用于筛选杂交种与其亲本不同的性状。表现出不成比例错误表达的基因或杂种与其亲本强烈分化的基因可能与合子后隔离有关。这些候选者的进化意义可以在自然研究系统中使用群体遗传分析进行评估。统计方法将揭示，基因表达的差异是否是由自然选择驱动的，以及基因的错误表达是否有助于合子后隔离。