Establishment of a conditional TALEN system using the translational enhancer dMac3 and an inducible promoter activated by glucocorticoid treatment to increase the frequency of targeted mutagenesis in plants.

Transcription activator-like effector nuclease (TALEN) is an artificial nuclease that causes DNA cleavage at the target site and induces few off-target reactions because of its high sequence specificity. Powerful and variable tools using TALENs can be used in practical applications and may facilitate the molecular breeding of many plant species. We have developed a convenient construction system for a plant TALEN vector named the Emerald Gateway TALEN system.