Phylogenetic trees of LAGLIDADG coding genes. Maximum-likelihood phylogenetic trees were constructed with three representative morel species based on the amino acid sequences of LAGLIDADG genes in their mitogenomes a Morchella populiphila NRRL22315 (Morpop1), a black morel b Morchella peruviana NRRL66754 (Morper1), a yellow morel c Morchella anatolica PhC233 (Morana1), a blushing morel. Support values are shown at the nodes. Clades represent the amino acid sequences of all LAGLIDADG genes, which are either inserted within core genes or located externally in the mitogenomes. The genes are labelled with detailed information. For example, ”Morpop1-LAG25-cox1-21” describes the 25th LAGLIDADG gene inserted into the core gene cox1 at position 21 in M. populiphila NRRL22315, while, “Morper1-LAG15” denotes the 15th LAGLIDADG gene located outside the core genes in M. peruviana NRRL66754.