Polyploidy generates beauty: exploration of complex genomes of roses (Rosa L. sect. Caninae (DC.) Ser.)

多倍体产生美丽：玫瑰复杂基因组的探索（Rosa L. sect. Caninae (DC.) Ser.）

• 批准号: 282205794
• 负责人: Dr. Christiane Ritz
• 金额: --
• 依托单位: Arbeitsgruppe Spezielle Botanik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/282205794?language=en
• 关键词: Polyploidy; generates; beauty; exploration; complex

Despite significant progress in our understanding of polyploid genomes many aspects of their evolution remain poorly understood. Rosa represents an economically important genus with widespread polyploidy. However, Rosa is also enigmatic in having a unique reproduction system called 'permanent odd polyploidy'. Here we propose to explore Rosa mitosis and meiosis using cytogenetic, molecular and genomic approaches. By using conventional rDNA and newly developed chromosome-specific FISH probes, we are going to follow the behaviour of genomes during meiosis in parental species and natural hybrids. Deep sequencing of Rosa genomes yielding large amount of genomic sequences will be useful for generation of genome and chromosome-specific probes. We expect that such an approach will allow us to obtain information about the major components constituting the chromosome sets which are characterised by their different meiotic behaviour.

尽管我们对多倍体基因组的理解取得了重大进展，但对其进化的许多方面仍然知之甚少。玫瑰是具有广泛多倍体的重要经济属。然而，玫瑰也有一个神秘的独特的生殖系统，称为“永久奇数多倍体”。本文拟从细胞遗传学、分子遗传学和基因组学等方面对玫瑰有丝分裂和减数分裂进行研究。利用传统的rDNA和新开发的染色体特异性FISH探针，我们将跟踪亲本种和自然杂交种减数分裂期间基因组的行为。玫瑰基因组的深度测序将产生大量的基因组序列，这将有助于产生基因组和染色体特异性探针。我们期望这种方法将使我们能够获得有关构成染色体组的主要成分的信息，这些染色体组的特征是它们的不同减数分裂行为。

项目成果

Asymmetrical canina meiosis is accompanied by the expansion of a pericentromeric satellite in non-recombining univalent chromosomes in the genus Rosa

• DOI: 10.1093/aob/mcaa028
• 发表时间: 2020-02
• 期刊: Annals of Botany
• 影响因子: 4.2
• 作者: J. Lunerová;V. Herklotz;Melanie Laudien;Radka Vozárová;Marco Groth;A. Kovařík;C. Ritz