Pleocatenata chiangraiensis gen. et. sp. nov. (Pleosporales, Dothideomycetes) from medicinal plants in northern Thailand

By

Sun, Yaru
Liu, Ning Guo
Hyde, Kevin D
Jayawardena, Ruvishika S.
Wang, Yong

Type

Article

Date of Publication

2022-2-11

Original Publication

MycoKeys

Volume

87

Pages

77--98

Subjects

Genera incertae sedis , Hyphomycetes , multi-gene phylogeny , multi-gene phylogeny , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.87.79433

 

Abstract

Pleocatenata, a new genus, is introduced with its type species, Pleocatenata chiangraiensis, which was isolated from withered twigs of two medicinal plants, Clerodendrum quadriloculare (Blanco) Merr (Verbenaceae) and Tarenna stellulata (Hook.f.) Ridl (Rubiaceae) in northern Thailand. The genus is characterized by mononematous, septate, brown or dark brown conidiophores, monotretic conidiogenous cells and catenate, obclavate, olivaceous to blackish brown conidia. Phylogenetic analysis of combined LSU, SSU, tef1-α, rpb2 and ITS sequence data showed Pleocatenata forms a distinct phylogenetic lineage in Pleosporales, Dothideomycetes. Therefore, we treat Pleocatenata as Pleosporales genera incertae sedis based on morphology and phylogenetic analyses. Descriptions and illustrations of the new taxa are provided, and it is compared with morphologically similar genera.