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相关概念视频

CRISPR01:59

CRISPR

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Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
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Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
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The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
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Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
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相关实验视频

Updated: Jun 9, 2025

Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits
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在作物中的CRISPR/Cas系统中介基编辑:最近的发展和未来的前景.

V Edwin Hillary1, S Antony Ceasar2

  • 1Division of Plant Molecular Biology and Biotechnology, Department of Biosciences, Rajagiri College of Social Sciences, Cochin, Kerala, 683 104, India.

Plant cell reports
|October 25, 2024
PubMed
概括

基因编辑可以在没有双链断裂的情况下精确地修改植物基因组,克服了CRISPR/Cas9基因编辑的局限性. 这项技术通过实现有针对性的基准转换来提高产量和质量,促进了作物改进.

关键词:
氨基基基编辑器 氨基基基编辑器编辑基础编辑这就是CRISPR/CasPR.农作物 农作物 农作物赛蒂丁基编辑器 赛蒂丁基编辑器基因组编辑 基因组编辑植物 植物 植物

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科学领域:

  • 植物生物技术 植物生物技术
  • 基因组编辑 基因组编辑
  • 农业科学 农业科学

背景情况:

  • 克里斯普尔/卡斯9可用于基因功能研究和作物产量改善的植物基因组向改变.
  • 非同源端结合 (NHEJ) 和同源导向修复 (HDR) 途径在植物基因组编辑有效性方面存在局限性.
  • 基数编辑成为一个精确的替代方案,可以在没有捐赠模板或双链断裂的情况下进行单基数转换.

研究的目的:

  • 审查各种基编辑系统的机制,包括DNA和RNA基编辑器.
  • 概述基础编辑的当前应用,以改善作物.
  • 讨论基础编辑在提高作物质量的局限性和未来方向.

主要方法:

  • 审查关于CRISPR/Cas9和基础编辑技术的现有文献.
  • 对DNA基编辑器 (cytidine和adenine) 和RNA基编辑器的分析.
  • 在作物改良策略中探索基准编辑应用.

主要成果:

  • 基编辑系统通过转换单个DNA或RNA基来提供精确的遗传修饰.
  • 已经开发了各种DNA和RNA基编辑器,提供不同的编辑功能.
  • 该评论详细介绍了目前可用的数据库编辑器的机制和类型.

结论:

  • 基组编辑为精确的植物基因组工程提供了一个强大的工具,克服了CRISPR/Cas9的局限性.
  • 在作物改良中的应用侧重于提高产量和质量特征.
  • 对局限性和未来方向的进一步研究将为农业进步优化基础编辑.