Efficient A·T to G·C Base Conversions in Dicots Using Adenine Base Editors Expressed under the Tomato EF1α Promoter.

Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/Cas systems have revolutionized plant breeding. Different Cas enzymes have been widely used to introduce deletions or insertions into plant genomes. However, many important agronomical traits in plants are associated with single nucleotide polymorphisms. For example, the Lin5 SNP causes an Asn366 to Asp change, resulting in a higher sugar content in tomato fruits (Tieman et al., 2017). Thus, it is important to develop tools to efficiently introduce precise base changes in crops.