使用CRISPR/Cas9在稳定转换的谷物香组织中首次成功的向突变
Susanne K Vollmer1,2,3, Markus G Stetter2,3, Götz Hensel1,3
1Centre for Plant Genome Engineering, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
Plant biotechnology journal
|February 11, 2026
概括
谷物,一种适应气候变化的作物,现在可以使用CRISPR/Cas9基因组编辑进行基因改进. 这项研究建立了阿玛兰的向基因编辑协议,使作物发展得更快.
科学领域:
- 植物生物技术 植物生物技术
- 农作物科学 农作物科学
- 基因组学就是基因组学.
背景情况:
- 谷 (Amaranthus hypochondriacus L.) 是一种营养丰富,气候适应性强的C4双,具有显著的农业潜力.
- 目前缺乏稳定转换,再生和CRISPR/Cas9介导的基因组编辑的高效协议.
- 克里斯普尔/卡斯基因组编辑加速了气候适应性,高产作物的发展,但需要优化特定物种的协议.
研究的目的:
- 建立CRISPR/Cas9调解基因组编辑的高效和可复制的协议.
- 通过使用CasCADE模块化克隆系统,证明了在谷物黄杉中向突变的可行性.
- 为了实现有针对性的分子研究和改良的谷物花品种的育种.
主要方法:
- 使用CasCADE模块化克隆系统进行CRISPR/Cas9基因编辑.
- 在谷物黄的贝他林生物合成途径中的向关键基因.
- 分析了成功的基因编辑,包括删除和插入的转换calli.
主要成果:
- 在高达49%的转化谷物花中,成功地实现了CRISPR/Cas9介导的编辑.
- 在贝他林生物合成途径的向基因中观察到删除或插入.
- 在一个孤儿作物中证明了有针对性的突变发生的可行性,比如谷物.
结论:
- 通过CRISPR/Cas9介导的基因组编辑是一种可行的工具,用于在谷物中进行基因改进.
- 已建立的协议为加速分子研究和在这种抗气候作物中进行育种铺平了道路.
- 这项工作克服了谷物花的遗传改进的一个关键限制.
相关概念视频
01:59CRISPR
58.0K
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...
58.0K
02:53CRISPR and crRNAs
19.2K
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.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
19.2K
01:28CRISPR/Cas9 Genome Editing
1.9K
The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...
1.9K
02:17Ecological Succession
21.6K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.6K
01:16In-vitro Mutagenesis
16.6K
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
16.6K
01:33Bacterial Transformation
60.2K
In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
60.2K