A BGL-producing fungal strain was isolated from a sample of rotten mandarin peel.
The phylogenetic tree of the isolated fungus and related fungal species based on the ITS regions is provided in Fig. 1.
It can be clearly seen that the isolated fungus was included in the genus Phoma, and was closely related to the species Phoma pomorum, showing the highest sequence similarities with P. pomorum var. circinata CBS 286.76 (99.4%), P. pomorum var. cyanea CBS 388.80 (99.6%), and P. pomorum var. pomorum CBS 539.66 (99.6%). P. pomorum is one of the most common fungal species presenting a biological risk to plants.