Cloning and molecular evolution of 9-cis-epoxycarotenoid dioxygenase gene (NCED3) in six species of Glycyrrhiza L

This study provides the first analysis of the evolution of NCED3s in six species of Glycyrrhiza. Six NCED3 genes were slow evolutionary rates in six NCED3s. Different genetic relationships to Glycyrrhiza adapted to various environments. The changes in ABA content were consistent with the evolution of NCED3. Whether there are direct relationships between NCED3 and environmental adaptation, the answer is uncertain, and we hope to show more positive results in the further study of NCED3 in Glycyrrhiza L.