Unveiling four new taxa and Nigrosynnema natarajanensis comb. nov. in Stachybotryaceae (Hypocreales) from monocotyledon plants in Guangdong Province, China

By

Liao, Chun-Fang
Doilom, Mingkwan
Bhat, Darbhe Jayarama
Kandawatte, Thilini Chethana
Tangtrakulwanich, Khanobporn
Yang, Yunhui
Al-Otibi, Fatimah Olyan
Hyde, Kevin D
Dong, Wei

Type

Article

Date of Publication

2025

Original Publication

MycoKeys

Volume

114

Pages

299--327

Subjects

4 new taxa , Asparagaceae , Hyphomycetes , saprobic fungi , Sordariomycetes , taxonomy , Zingiberaceae

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.114.139325

 

Abstract

Members of Stachybotryaceae are distributed worldwide, with certain species playing a significant role as bio-degraders and some causing diseases in plants, humans, and animals. Other species within this family can be found in soil and have been reported as saprobes in various plants. In this study (2021–2022), fungal taxa resembling Stachybotryaceae, isolated from dead leaves of Agave sisalana and a dead stem of Wurfbainia villosa in Guangdong Province, China, are identified based on morphological characteristics and molecular data. Multi-locus phylogeny based on calmodulin (cmdA), internal transcribed spacer (ITS), the large subunit nuclear rDNA (LSU), RNA polymerase II second largest subunit (rpb2), the partial translation elongation factor 1-α (tef1-α), and β-tubulin (tub2) revealed that nine strains were grouped within Stachybotryaceae. Nigrosynnema guangdongensegen. et sp. nov., typical of Stachybotryaceae but having unusual olivaceous brown to black synnemata that are narrower towards the apex and produce phialidic, aseptate, slimy conidia in black and glistening heads, is introduced. Additionally, Brevistachys wurfbainiae and Sirastachys guangdongensis are introduced as new species. Stachybotrys microsporus is a new host record for Agave sisalana. The present study provides comprehensive descriptions, illustrations, and molecular data analyses of the newly discovered taxa and newly recorded species as a taxonomic and phylogenetic contribution to Stachybotryaceae. Furthermore, a new combination, Nigrosynnema natarajanensis, is proposed for the previously described Virgatospora natarajanensis.