Figure 2.

Phylogenetic analysis of terpene synthases. TPSs in Orchidaceae, including A. shenzhenica; V. planifolia; D. catenatuml P. equestris Phalaenopsis aphrodite; P. bellina, Arabidopsis thaliana, and Abies grandis; and S. moellendorffii were used. Sequence analysis was performed using MEGA 7.0 to create a tree using the nearest neighbor-joining method. The coding sequence was used for analysis. The numbers at each node represent the bootstrap values. Various colors mean distinct subfamilies and special symbols represent different plant species, with solid circles, tangle, diamond, and triangle illustrating Orchidaceae, Arabidopsis thaliana, A. grandis, and S. moellendorffii, respectively.