Phylogenetic assessment and taxonomic revision of Halobyssothecium and Lentithecium (Lentitheciaceae, Pleosporales)

Mark Seasat Calabon,Sanja Tibell,Rungtiwa Phookamsak,Ka-Lai Pang,Kevin D Hyde,Saranyaphat Boonmee,Leif Tibell,E.B Gareth Jones

doi:10.1007/s11557-021-01692-x

Abstract

Our studies on lignicolous aquatic fungi in Thailand, Sweden, and the UK resulted in the collection of three new Halobyssothecium species (H. bambusicola, H. phragmitis, H. versicolor) assigned to Lentitheciaceae (Pleosporales, Dothideomycetes). Multi-loci phylogenetic analyses of the combined large subunit, small subunit, internal transcribed spacers of ribosomal DNA, and the translation elongation factor 1-alpha sequence data enabled a revision of the taxa assigned to Lentithecium and the transfer of L. cangshanense, L. carbonneanum, L. kunmingense, L. unicellulare, and L. voraginesporum to Halobyssothecium. Collection of an asexual morph of L. lineare and phylogenetic analysis confirmed its taxonomic placement in Keissleriella. Detailed descriptions and illustrations of H. bambusicola, H. phragmitis, and H. versicolor are provided.

Highlights

Pleosporales, typified by Pleospora herbarum (Pers.) Rabenh. (Pleosporaceae), was formally established by Luttrell and Barr and characterized by perithecioid ascomata, usually with a papillate apex, ostiolate, cellular pseudoparaphyses, and bitunicate asci
The tree topologies resulted from maximum likelihood (ML), maximum parsimony (MP), and Bayesian posterior probabilities (BYPP) analyses were congruent
Since Lentithecium was established for L. fluviatile (≡ Massarina fluviatilis), ten additional species have been introduced from lotic and lentic freshwater (Zhang et al 2009b; Tanaka et al 2015; Hyde et al 2016; Su et al 2016; Crous et al 2018), as well as marine (Suetrong et al 2009; Zhang et al 2009b; Hyde et al 2016) habitats and from different hosts

Summary

Introduction

Pleosporales, typified by Pleospora herbarum (Pers.) Rabenh. (Pleosporaceae), was formally established by Luttrell and Barr (in Barr 1987) and characterized by perithecioid ascomata, usually with a papillate apex, ostiolate, cellular pseudoparaphyses, and bitunicate asci. Pleosporales, typified by Pleospora herbarum (Pers.) Rabenh. (Pleosporaceae), was formally established by Luttrell and Barr (in Barr 1987) and characterized by perithecioid ascomata, usually with a papillate apex, ostiolate, cellular pseudoparaphyses, and bitunicate asci. Phylogenetic studies of Pleosporales have been provided by Schoch et al (2009), Zhang et al (2009a, 2012), Hyde et al (2013), Liu et al (2017), and Hongsanan et al (2020). Lumbsch and Huhndorf (2010) included 28 families and 175 genera in Pleosporales, with 12 genera listed under Pleosporales, genera incertae sedis. Hyde et al (2013) accepted 88 families in Pleosporales. Wijayawardene et al (2020) and Hongsanan. Mycol Progress (2021) 20:701–720 et al (2020) included 91 families in Pleosporales. The order includes saprotrophs, parasites, pathogens, epiphytes, and endophytes (Hongsanan et al 2020)

Methods

Results

Conclusion