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在大豆中,一个无DNA和基因型独立的CRISPR/Cas9系统

Chikako Kuwabara¹, Ryuji Miki², Nobuyuki Maruyama³

¹Graduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo, Hokkaido 060-8589, Japan.

Plant physiology

|September 22, 2024

概括

研究人员开发了一种用于大豆的无DNA基因组编辑系统,该系统使用植物中的轰炸核核蛋白 (iPB-RNP) 来直接修改射击角干细胞,从而在没有传统组织培养的情况下实现高效的基因编辑.

科学领域:

植物生物技术植物生物技术
基因组学就是基因组学.
分子生物学分子生物学

背景情况:

传统的大豆基因组编辑依赖于组织培养,这往往是低效和耗时的.
开发用于植物直接基因组修改的方法对于加速作物改进至关重要.

研究的目的:

建立一个没有DNA的豆类基因组编辑系统,使用植物内轰炸-核核蛋白 (iPB-RNP) 方法.
针对大豆过敏原基因Gly m Bd 30K进行突变诱导.

主要方法:

利用胚胎轴的射击角髓系统 (SAM) 作为基因组编辑的目标组织.
通过粒子轰炸将CRISPR/Cas9核核蛋白 (RNP) 复合体直接输入SAM干细胞.
从改造的SAMS中生成基因组编辑的大豆植物 (E0代).

主要成果:

在没有外来DNA或传统组织培养的情况下成功生成基因组编辑的大豆植物.
在E0植物中的目标Gly m Bd 30K基因中实现了高编辑频率.
已证明诱导突变对E1代的传染性,其频率在各个品种中从0.4%到4.6%不等.
通过使用iPB-RNP方法在多个位置成功执行了同时发生突变的突变发生.

结论:

该iPB-RNP方法提供了一个实用和高效的方法,用于在大豆中进行无DNA基因组编辑.
这种方法绕过了漫长的组织培养过程的需要,加速了编辑大豆品种的发展.
该技术适用于其他双植物,为改善作物提供了一种多功能工具.

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