棉花CRISPR/Cas9基因编辑有效sgRNA高效筛选体系的研究

周冠彤, 雷建峰, 代培红, 刘超, 李月, 刘晓东

Efficient screening system of effective sgRNA for cotton CRISPR/Cas9 gene editing

ZHOU Guan-Tong, LEI Jian-Feng, DAI Pei-Hong, LIU Chao, LI Yue, LIU Xiao-Dong

图6 GhU6-5P-2::PDS-sgRNA-CLCrVA部分编辑效应测序检测结果 A: M: 2K plus II DNA marker; 1、2分别为对照载体基因组PCR扩增产物酶切后和酶切前结果。B: M: 2K plus II DNA marker; 3~5为转化GhU6-5P-2::PDS-sgRNA-CLCrVA单株样品基因组PCR扩增产物酶切后结果。C: GhPDS-sgRNA靶序列及突变PCR产物的测序。M1、M2发生在A亚组的GhPDS, M3发生在D亚组的GhPDS。D: 突变PCR产物的测序峰图, 红色方框指示碱基相比对照发生突变区域。PCR/RE表示PCR扩增产物酶切分析。

Fig. 6 Results of GhU6-5P-2::PDS-sgRNA-CLCrVA partial editing effect sequencing A: M: 2K plus II DNA marker; 1, 2: PCR/RE assay of negative control genome after and before the enzyme digestion. B: M: 2K plus II DNA marker; 3-5: PCR/RE assay of GhU6-5P-2::PDS-sgRNA-CLCrVA of single plant sample genome after enzyme digestion. C: sequencing of GhPDS-sgRNA target sequence and mutant PCR products. M1, M2 occurred at GhPDS from A subgenome; M3 occurred at GhPDS from D subgenome. D: sequencing peak diagram of the mutant PCR product; the red box indicates that the base has a mutation region compared to the control. PCR/RE indicates PCR/restriction enzyme assays.