Are we entering an era of ternary vector system for genome editing in plants?

Agrobacterium-mediated delivery of CRISPR/Cas reagents for genome editing in plants enters an era of ternary vector systems 

Lack of appropriate methods for delivery of genome-editing reagents is a major barrier to CRISPR/Cas-mediated genome editing in plants. Agrobacterium-mediated genetic transformation (AMGT) is the preferred method of CRISPR/Cas reagent delivery, and researchers have recently made great improvements to this process. 

In this article, we review the development of AMGT and AMGT-based delivery of CRISPR/Cas reagents. We give an overview of the development of AMGT vectors including binary vector, superbinary vector, dual binary vector, and ternary vector systems. We also review the progress in Agrobacterium genomics and Agrobacterium genetic engineering for optimal strains. We focus in particular on the ternary vector system and the resources we developed. In summary, it is our opinion that Agrobacterium-mediated CRISPR/Cas genome editing in plants is entering an era of ternary vector systems, which are often integrated with morphogenic regulators. The new vectors described in this article has deposited on MolecularCloud for sharing with academic investigators for noncommercial research. 

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