Morpho-phylogenetic evidence reveals novel species and new records of Nigrograna (Nigrogranaceae) associated with medicinal plants in Southwestern China

By

Du, Hongzhi
Lu, Yu-Hang
Cheewangkoon, Ratchadawan
Liu, Jian-Kui

Type

Article

Date of Publication

2024

Original Publication

MycoKeys

Volume

110

Pages

1--33

Subjects

4 new taxa , Dothideomycetes , Multi-locus , Phylogeny , sexual morph , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.110.132628

 

Abstract

During a survey of saprobic fungal niches in Southwestern China, eighteen ascomycetous collections ofNigrograna(Nigrogranaceae, Pleosporales, Dothideomycetes) were found on dead branches of medicinal plants. These taxa were characterized and identified based on morphological and culture characteristics, and phylogenetic analyses of a combined the internal transcribed spacer region of rDNA (ITS), nuclear large subunit rDNA (28S, LSU), RNA polymerase second-largest subunit (rpb2), nuclear small subunit rDNA (18S, SSU), and translation elongation factor 1-alpha (tef1-α) sequence dataset also confirmed their placement. As a result, four novel species, namelyNigrograna camelliae,N. guttulata,N. longiorostiolataandN. neriicolawere described. Additionally, four new host records ofN. acericola,N. magnoliae,N. oleaeandN. thymiwere introduced. Furthermore, this study addresses the taxonomic status ofN. trachycarpi, proposing its synonymy underN. oleae. Detailed illustrations, descriptions and informative notes for each newly identified taxon and novel host record are provided in this study.