Karyotype and genome evolution in Brassicaceae Lineage III. Comparative karyotypic studies through multicolour chromosome painting

十字花科谱系 III 的核型和基因组进化。

• 批准号: 206428017
• 负责人: Dr. Neela Enke
• 金额: --
• 依托单位: Department of Experimental Biology
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/206428017?language=en
• 关键词: Karyotype; genome; evolution; Brassicaceae; Lineage

Comparative chromosome painting (CCP) enables the identification of large homeologous chromosome regions shared among closely related taxa. In plants, the technique so far is only feasible in crucifers (Brassicaceae). The proposed project will elucidate chromosome rearrangements in the Brassicaceae Lineage III and aims to identify the ancestral karyotype for that lineage. This will be achieved through identifying the position of the ancestral genomic blocks (defined in previous studies) on the chromosomes of representatives of all seven tribes within Lineage III. CCP will also be applied to unveil the extent of infrageneric and intraspecific karyotypic variation within a confined species group within lineage III. The results will be analysed in relation to the Ancestral Crucifer Karyotype (ACK) as well as existing results of Brassicaceae Lineages I and II and also put into a phylogenetic framework. This will expand our knowledge on the extent of cross-species chromosomal colinearity, scenarios and rates of karyotypic alterations within Brassicaceae and the plant kingdom.

比较染色体涂色技术(CCP)能够识别在紧密相关的类群中共享的大的同源染色体区域。在植物上，到目前为止，这项技术只适用于十字花科植物。这项拟议的项目将阐明十字花科谱系III中的染色体重排，并旨在确定该谱系的祖先核型。这将通过确定祖先基因组块在谱系III中所有七个部落代表的染色体上的位置来实现。CCP还将被用于揭示谱系III中一个受限物种群内属内和种内核型变异的程度。结果将与祖先十字花科核型(ACK)以及十字花科谱系I和II的现有结果进行分析，并纳入系统发育框架。这将扩大我们对十字花科和植物界内跨物种染色体共线性的程度、核型改变的场景和比率的了解。