Morphological and Phylogenetic Appraisal of Novel and Extant Taxa of Stictidaceae from Northern Thailand.

Eleni Gentekaki,Vinodhini Thiyagaraja,Dhanushka N. Wanasinghe,Kevin D. Hyde,Saisamorn Lumyong,De-Ping Wei

doi:10.3390/jof7100880

Abstract

Stictidaceae comprises taxa with diverse lifestyles. Many species in this family are drought resistant and important for studying fungal adaptation and evolution. Stictidaceae comprises 32 genera, but many of them have been neglected for decades due to the lack of field collections and molecular data. In this study, we introduce a new species Fitzroyomyces hyaloseptisporus and a new combination Fitzroyomyces pandanicola. We also provide additional morphological and molecular data for Ostropomyces pruinosellus and O. thailandicus based on new collections isolated from an unidentified woody dicotyledonous host in Chiang Rai, Thailand. Taxonomic conclusions are made with the aid of morphological evidence and phylogenetic analysis of combined LSU, ITS and mtSSU sequence data. Characteristics such as the shape and septation of ascospores and conidia as well as lifestyles among genera of Stictidaceae are discussed.

Highlights

Nannfeldt [1] established Ostropales to accommodate Ostropaceae, which was later synonymized under Stictidaceae [2]
The taxonomic position of Ostropales is within Ostropomycetidae (Lecanoromycetes and Ascomycota), which was assigned based on multigene phylogenetic analyses [3]
The obtained cultures were deposited in Mae Fah Luang University culture collection (MFLUCC), Chiang Rai, Thailand, and herbarium specimens were deposited in Mae Fah Luang University Herbarium

Summary

Introduction

Nannfeldt [1] established Ostropales to accommodate Ostropaceae, which was later synonymized under Stictidaceae [2]. The taxonomic position of Ostropales is within Ostropomycetidae (Lecanoromycetes and Ascomycota), which was assigned based on multigene phylogenetic analyses [3]. The outlines of Ostropales have been revised in several studies, and the number of families in the order has been subject to multiple changes over time [4,5,6,7]. 14 families had been included in Ostropales, namely, Coenogoniaceae, Gomphillaceae Multigene phylogenies have resulted in the transfer of most families into different orders, such as Baeomycetales, Thellenellales, Graphidales and Gyalectales. Stictidaceae is the only family assigned to Ostropales [10]

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Conclusion