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相关概念视频

RNA-seq03:21

RNA-seq

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
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Ribosome Profiling02:24

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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使用PacBio和Illumina RNA-seq数据生成的高质量的法巴豆参考转录.

Na Zhao1, Enqiang Zhou1, Yamei Miao1

  • 1Department of Economic Crops, Jiangsu Yanjiang Institute of Agricultural Science, Nantong, China.

Scientific data
|April 9, 2024
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概括

研究人员使用遗传图和RNA-seq数据提高了法巴豆基因组质量. 这改善了染色体结构,并确定了成千上万的新基因和转录,用于分子繁殖.

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科学领域:

  • 基因组学就是基因组学.
  • 植物科学 植物科学
  • 分子生物学分子生物学

背景情况:

  • 法巴豆基因组最初是在2023年发表的.
  • 进一步的精细化对于在法巴豆中推进分子育种战略至关重要.

研究的目的:

  • 为了提高法巴豆基因组组合的质量和完整性.
  • 为未来的研究和育种提供更准确,更详细的基因组资源.

主要方法:

  • 利用高密度的遗传地图来对脚手架进行排序和定位.
  • 综合Illumina和Pacbio来自37个样本的RNA测序数据,以改进基因模型.
  • 纳入遗传数据来构建一个全面的转录组序列.

主要成果:

  • 染色体长度增加了14.28 Mbp,脚手架数量减少了45%.
  • 识别和纠正了121,606个转录,预测了15640个替代拼接事件,2148个lncRNA和1752个融合转录.
  • 发现了38,850个新基因 (56,188个转录),并形成了由54,753个单基因组成的103,267个转录的完整转录组.

结论:

  • 改进的法巴豆基因组为分子育种提供了显著增强的资源.
  • 详细的基因结构,包括替代拼接和新型基因,为作物改进提供了新的途径.
  • 这种全面的基因组和转录基因组数据将加速法巴豆遗传学和开发研究.