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. 2022 Oct 27:10:e94088.
doi: 10.3897/BDJ.10.e94088. eCollection 2022.

Phaeoisarialaianensis (Pleurotheciales, Pleurotheciaceae), a new species from freshwater habitats in China

Yu Liu  1 , Gui-Ping Xu  1 , Xin-Yi Yan  1 , Min-Hui Chen  1   2 , Yang Gao  1   2 , Hai-Jing Hu  1   2 , Hai-Yan Song  3 , Dian-Ming Hu  1   2 , Zhi-Jun Zhai  1   2
Affiliations

Phaeoisarialaianensis (Pleurotheciales, Pleurotheciaceae), a new species from freshwater habitats in China

Yu Liu et al. Biodivers Data J. .

Abstract

Background: Freshwater fungi play an indispensable role in the ecosystem and have great research value. Based on morphological and phylogenetic analyses of a concatenated dataset of ITS, LSU and SSU sequences, a new species, Phaeoisarialaianensis, was introduced as a freshwater hyphomycete from Anhui Province, China.

New information: Phaeoisarialaianensis was morphologically described as erect, rigid, dark brown to black, velvety synnemata which has macronematous, septate, branched, brown to dark brown, parallel adpressed conidiophores with polyblastic, integrated, terminal, hyaline to pale brown, smooth, denticulate, sympodial conidiogenous cells and ellipsoidal to obovoid, rounded at the apex, obtuse and tapering towards base, septate, guttulate conidia. Based on molecular and morphological characteristics, it is confirmed to be a new species. All illustrations and descriptions have been provided.

Keywords: Ascomycota; Phaeoisaria; morphology; phylogenetic anaysis; taxonomy.

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Figures

Figure 1.
Figure 1.
Phaeoisarialaianensis (HFJAU 10040, Holotype) a, b Colonies on wood; c, d Conidiophores; e, f Conidiogenous cells with conidia; g Germinating conidium; h Conidia; i, j Colony on PDA for 26 days from above and reverse. Scale bars: a, b = 100 µm, c, d = 50 µm, e–h = 10 µm.
Figure 2.
Figure 2.
Phylogenetic tree of Bayesian analysis, based on a concatenated alignment of ITS, LSU and SSU sequences. Branch support is shown at the nodes, Maximum Likelihood bootstrap support (BS, black) ≥ 60% and Bayesian posterior probability (PP, red) ≥ 0.95. Leotialubrica (AFTOLID 1) and Microglossumrufum (OSC100641) are selected as the outgroup taxa. The new species is marked in red and ex-type strains are in bold.
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