Neotypification of Muyocopron dipterocarpi, a new host record on Zanthoxylum fagara (Rutaceae) and the potential for secondary metabolite production in Muyocopronaceae

Muyocopron is a genus with a diverse lifestyle, occurring in tropical and temperate regions and can be found on various hosts and habitats. The present study confirmed a new host record of Muyocopron dipterocarpi from dead twigs of Zanthoxylum fagara in northern Thailand, based on both morphological comparisons with multigene analyses of LSU, SSU, ITS, and TEF1 sequence data. A preliminary screening test also showed that M. dipterocarpi has a potential for antimicrobial activity, observable as partial inhibition, when compared with the positive control. In addition, a neotype is designated here for Mu. dipterocarpi due to the original material no longer existing. This will facilitate subsequent taxonomic work in stabilizing the application of name, and to serve as a foundation for further applied research of this species.