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相关概念视频

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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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组装非模型植物的基因组:一个用Ranunculus (Ranunculaceae) 的进化见解进行的案例研究.

Kevin Karbstein1,2,3, Nancy Choudhary4, Ting Xie5

  • 1Albrecht-von-Haller Institute for Plant Sciences, Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium), University of Göttingen, Göttingen, Germany.

The Plant journal : for cell and molecular biology
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概括

研究人员为Ranunculus生成了高质量的基因组序列,克服了测序大型植物基因组的挑战. 这项工作为Ranunculaceae家族的进化研究提供了关键的基因组资源.

关键词:
照明与纳米孔与PacBio测序对比这种植物是Ranunculaceae.这种复杂的物种是Ranunculus auricomus.在 de novo 组装策略中.基因演化 基因演化 基因演化大型非模型植物基因组.基基因组是如何形成的核基因组是一个核基因组.一个塑料的塑料.

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科学领域:

  • 植物基因组学 植物基因组学
  • 进化生物学是进化的生物学.
  • 生物信息学是一种生物信息学.

背景情况:

  • 基因组测序对于理解植物进化至关重要,但大型和复杂的基因组带来了重大挑战.
  • 兰类 (Ranunculaceae) 在进化上对研究多体化和网状物进化的重要,但缺乏高质量的基因组序列.
  • 之前对Ranunculaceae的基因组研究因缺乏必要的核和线粒体基因组数据而受到限制.

研究的目的:

  • 开发和评估具有大型复杂基因组的植物物种的基因组组装策略.
  • 为Ranunculus属中的一个关键物种生成高质量的塑体,线粒体和核基因组序列.
  • 为Ranunculaceae中先进的遗传学,功能和分类学分析提供基础.

主要方法:

  • 对Illumina短读,牛津纳米孔技术 (ONT) 长读和PacBio (HiFi) 长读测序和组装策略进行比较分析.
  • 双胞胎原始物种R. cassubicifolius的测序.
  • 塑体,线粒体和核基因组的组装和注释,包括使用染色体构造 (Hi-C) 数据的脚手架.

主要成果:

  • 通过混合策略,成功组装了156 kbp的塑体和1.18 Mbp的线粒体.
  • 一个2.69Gbp平分类核基因组序列的生成,具有高完整性 (94.1%BUSCO) 和35,482个注释基因.
  • 基于更新的塑体和新型线粒体数据的Ranunculaceae的家族基因组分析,包括对基因丢失的洞察.
  • 通过与现有的基因组进行比较,推断Ranunculales中的古老基因重复.

结论:

  • 开发的基因组测序和组装策略对于大型复杂的植物基因组是有效的.
  • 对Ranunculus产生的基因组资源将大大促进Ranunculaceae家族内的进化和功能研究.
  • 这项研究为未来关于血管精子进化,多化和适应性的研究提供了关键的基础.