Fig. 1

Phylogenetic analysis of the NAC transcription factors of Arabidopsis, apple and pear represented by red circles, blue squares and green triangles respectively. The full-length sequences of the NAC proteins were aligned using MUSCLE, and the phylogenetic tree was made using the maximum-likelihood tree method in the MEGA7.0 software. The tree was divided into 6 main groups 1, 2, 3, 4, 5 and 6 represented by red, green, blue, orange, black and yellow colored clusters within the tree while their subgroups designated from 1A-1H, 2A-2D, 3A-3D, 4A-4E, 5A-5B and 6A-6C respectively outside the tree