Unveiling Sordariomycetes taxa associated with woody litter in Northern Thailand

By

Phukhamsakda, Chayanard
Hyde, Kevin D
Samarakoon, Milan C.
Louangphan, Johnny
Navasit, Kedsara
Al-Otibi, Fatimah Olyan
Bhunjun, Chitrabhanu

Type

Article

Date of Publication

2025

Original Publication

MycoKeys

Volume

115

Pages

155--185

Subjects

2 new records , 2 new taxa , anthostomella-like taxa , Phylogeny , saprobes , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.115.145330

 

Abstract

Sordariomycetes species are abundant in woody litter samples. In this study, we introduce two novel species, Diaporthe thailandica (Diaporthaceae) and Occultitheca chiangraiensis (Xylariaceae), from woody litter materials. We also describe a new host record of D. tulliensis and a new geographical record for D. melonis. All collections were identified based on morphology and phylogenetic analyses of combined datasets. The morphologies of the taxa fit the generic concepts of Diaporthe and Occultitheca, respectively. Diaporthe thailandica formed a sister clade with D. raonikayaporum but differs from D. raonikayaporum in the sizes of conidiomata, conidiogenous cells, and beta conidia. Diaporthe thailandica also differs from D. raonikayaporum by the absence of gamma conidia. Occultitheca chiangraiensis differs from the sister taxon O. rosae in having smaller ascomata and a thicker mucilaginous sheath. We also provide a synopsis of Occultitheca species with details on their morphology, host, and country. These findings provide valuable insights into the diversity and ecological roles of Sordariomycetes, emphasising the need for continued exploration of fungal biodiversity in various environments.