Mycoenterolobium aquadictyosporium sp. nov. (Pleosporomycetidae, Dothideomycetes) from a freshwater habitat in Thailand
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ORIGINAL ARTICLE
Mycoenterolobium aquadictyosporium sp. nov. (Pleosporomycetidae, Dothideomycetes) from a freshwater habitat in Thailand Mark S. Calabon 1,2 & Kevin D. Hyde 1,3 & E. B. Gareth Jones 4 & Mingkwan Doilom 5,6 & Chun-Fang Liao 5,6 & Saranyaphat Boonmee 1,2 Received: 25 May 2020 / Revised: 25 July 2020 / Accepted: 28 July 2020 # German Mycological Society and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract A study of freshwater fungi in Thailand led to the discovery of Mycoenterolobium aquadictyosporium sp. nov. Evidence for the novelty and placement in Mycoenterolobium is based on comparison of morphological data. The new species differs from the type species, M. platysporum, in having shorter and wider conidia, and from M. flabelliforme in having much longer and wider conidia. The hyphomycetous genus Mycoenterolobium is similar to Cancellidium but differs in the arrangement of conidial rows of cells at the attachment point to the conidiophores. The conidia of the former are made up of rows of cells, radiating in a linear pattern from a single cell attached to the conidiophore, while in Cancellidium, adherent rows of septate branches radiate from the conidiophore. Cancellidium conidia also contain branched chains of blastic monilioid cells arising from the conidia, while these are lacking in Mycoenterolobium. At maturity in Mycoenterolobium, the two conidial lobes unite and are closely appressed. Phylogenetic analyses based on a combined LSU, SSU, ITS, TEF1-α, and RPB2 loci sequence data support the placement of Mycoenterolobium aquadictyosporium close to the family Testudinaceae within Pleosporomycetidae, Dothideomycetes. The novel species Mycoenterolobium aquadictyosporium is described and illustrated and is compared with other morphologically similar taxa. Keywords 1 new taxon . Freshwater hyphomycete . Asian mycology . Multi-locus analysis . Thailand
Section Editor: Gerhard Rambold * Saranyaphat Boonmee [email protected] 1
Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
2
School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
3
Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong Province, People’s Republic of China
4
Department of Botany and Microbiology, College of Science, King Saud University, P. O Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
5
CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, People’s Republic of China
6
Honghe Innovation Center for Mountain Futures, Kunming Institute of Botany, Honghe County 654400, Yunnan, People’s Republic of China
Introduction The incorporation of molecular data in phylogenetic and evolutionary studies has revolutionized the current knowledge of fungal systematics (Tanabe et al. 2005; Shenoy et al. 2006; Taylor and Berbee 2006; Choi and Kim 2017; Liu et al. 2017; Tedersoo et al. 2018; Nar
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