Work

Molecular phylogeny and morphology reveal three new species and two new records of Trichoderma (Hypocreaceae, Hypocreales) from China

Year: 2026

Type: article

Abstract: Species of Trichoderma are globally distributed across diverse ecosystems. In this study, four Trichoderma strains were isolated from Ophiocordyceps jinguangensis , two from O. sinensis , and two from Dracaena sp. To determine their taxonomic placement, maximum likelihood and Bayesian inference analyses of ITS, tef1-α , and rpb2 sequences, along with morphological examinations, were conducted. Integrating phylogenetic and morphological evidence, these strains were identified as three new species, Trichoderma diqingense , T. dracaenae , and T. yuxiense , which are distributed in three distinct clades of Trichoderma (i.e., Harzianum , Viride , and Polysporum , respectively), and two known species, T. fertile and T. paraviridescens , which are newly recorded from the substrate O. sinensis . Descriptions and illustrations of all species are provided. These findings expand the understanding of Trichoderma species and substrate diversity, providing a taxonomic basis for future studies.

Source: MycoKeys

DOI: 10.3897/mycokeys.139.198944