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Updated: May 30, 2025

A Rapid and Facile Pipeline for Generating Genomic Point Mutants in C. elegans Using CRISPR/Cas9 Ribonucleoproteins

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通过使用单个gRNA的无DNACRISPR/Cas9系统对大豆β-amyrin合成酶基因进行同时的位点定向突变发生

Hiroki Asa¹, Chikako Kuwabara¹, Kenji Matsumoto²

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

Plant cell reports

|January 28, 2025

概括

我们使用无DNA的CRISPR/Cas9系统在大豆中确定了负责大豆沙尼生产的主要基因. 这一发现对于开发具有改善味道的大豆来说至关重要,因为它可以通过减少收缩性来改善味道.

科学领域:

植物分子生物学植物分子生物学
农业生物技术农业生物技术
生物化学生物化学

背景情况:

大豆中的大豆素有助于产生性后味,这对开发有味道的大豆食品品种构成了挑战.
了解β-阿米林合成酶基因 (GmBAS1和GmBAS2) 的特定作用对于操纵大豆胺水平至关重要.

研究的目的:

阐明GmBAS1和GmBAS2在大豆胺生物合成中的不同功能.
通过使用无DNA的CRISPR/Cas9系统产生具有减少或消除大豆沙宁含量的大豆突变物.

主要方法:

在使用无DNA集群定期间隔的短时间palindromic重复 (CRISPR) /CRISPR相关的内核酶9 (Cas9) 系统的GmBAS1和GmBAS2位点的位点定向突变发生.
通过轰炸将sgRNA和Cas9蛋白质复合物引入大豆胚胎轴.
通过切割放大多态序列 (CAPS) 和测序分析突变,并通过高性能液态染色学 (HPLC) 量化大豆素.

主要成果:

没有DNA的CRISPR/Cas9系统有效地诱导了大豆中的一个或两个GmBAS位点的突变.
特别是在GmBAS1位点的突变导致成熟的种子,年轻的根,茎和叶子中完全缺少大豆素.
这项研究确定了16种具有遗传突变的大豆植物.

结论:

GmBAS1是主要的β-阿米林合成酶基因,负责大豆中的大豆沙宁生物合成.
没有DNA的CRISPR/Cas9系统对大豆多个点的同时突变产生有效.
针对GmBAS1提供了一个可行的策略,用于开发大豆品种,减少大豆沙宁含量和改善味道.

关键词:

甘氨酸最大值 (Glycine max) 是一种这是一种粒子轰炸.核糖蛋白是一种核糖蛋白.射击顶端的美里系统.豆石是一种石.这是一种β-amyrin合成酶.

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