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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. 
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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.
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通过结合RNA-Seq和基因组复序策略来研究米潜水发芽.

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概括

在芽期间的浸水阻碍了直接种子大米 (DSR) 的采用. 这项研究确定了遗传因素,特别是关键基因中的促进体变异,这些变异使大白在洪水下迅速延长,这对DSR成功至关重要.

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科学领域:

  • 遗传学 是一个遗传学.
  • 植物生物学 植物生物学
  • 农业科学 农业科学

背景情况:

  • 发芽期间的浸水是直接种子大米 (DSR) 的一个重大障碍.
  • 潜水下的快速长的遗传基础尚未得到充分理解.
  • 开发耐浸水水对于改善DSR采用和作物产量至关重要.

研究的目的:

  • 为了研究在米中沉浸下快速长的遗传结构.
  • 为了确定控制在发芽期间潜水耐受性的关键基因和调控元素.
  • 为DSR品种的标记器辅助育种提供分子标.

主要方法:

  • 对20种大米品种进行选,以确定耐受性 (Xian133) 和敏感性 (Chang15) 品种.
  • 耐受性和敏感品种之间的比较转录组学和全基因组重新排序.
  • 对基因表达模式的分析和在监管区域中单核酸多态 (SNP) 的识别.

主要成果:

  • 洪水下的快速发芽主要是由转录重编程驱动的.
  • 氨基糖和核酸糖代谢途径在耐受性品种中显著丰富.
  • 在关键位点 (OscPGM和OsAGPL1) 的促进体变异在缺氧下调节基因表达和胆眼动物延长.

结论:

  • 在OscPGM和OsAGPL1的促销器区域的遗传变异是低氧状态下大眼延长的主要决定因素.
  • 已识别的SNP提供了有价值的分子标记物,用于培育具有增强潜水耐受性的DSR品种.
  • 了解这些遗传机制可以加快发展适应气候变化的水养殖实践.