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. 2021 Nov 22;12:773656. doi: 10.3389/fpls.2021.773656

TABLE 2.

The efficiency of CRISPR/Cas9 and gRNA transformation targeting brassinosteroid-insensitive 1 (EgBRI1) gene in oil palm and the phenotypes of the transgenic plants.

Gene Guide RNA Bombarded immature embryo Putative transformant Regenerated T0 shoots T0 with mutation/genotyped T0 plants Mutation rate Transformants with altered phenotype
Control Cas9 200 22 (11%) 17 (77%) 0/5 0 0
gBRI1-1 200 17 (8.5%) 13 (76.5%) 0/5 0 0
gBRI1-2 200 10 (5%) 8 (80%) 0/5 0 0
EgBRI1 Cas9/gBRI1-1 200 24 (12%) 18 (75%) 10/17 58.82% 6 stunted (33%) 5 leaf necrosis (28%)
Cas9/gBRI1-2 200 23 (11.5%) 20 (87%) 10/15 66.67% 5 stunted (25%) 10 leaf necrosis (50%)
Cas9/gBRI1-1 + gBRI1-2 200 36 (18%) 30 (83%) 7/7 100% 30 stunted (100%)