Dematiohelicomyces helicosporus
Dematiohelicomyces helicosporus (Boonmee, Y.Z. Lu & K.D. Hyde) Y.Z. Lu, Fungal Diversity 92: 159 (2018)
Basionym: Chlamydotubeufia helicospora Boonmee, Y.Z. Lu & K.D. Hyde, Fungal Diversity 80: 123 (2016)
Index Fungorum number: IF 554825; Facesoffungi number: FoF 04702
Etymology: ‘helicospora’ referring to asexual helicospores.
Holotype: MFLU 16-1338
Saprobic on woody substrate. Mycelium partly immersed, partly superficial, white, septate, sparsely branched hyphae, with masses of crowded conidia. Sexual morph: Undetermined. Asexual morph: Conidiophores 15–25 μm long × 4–6 μm wide (x̄ = 18 × 5 μm, n = 10), pale brown, macronematous, erect, short, smooth-walled. Conidiogenous cells 11–33 μm long × 4–5 μm wide (x̄ = 18 × 4.5 μm, n = 10), monoblastic, integrated, each with single conidium. Conidia 63–119 μm diam. and conidial filament 5–7 μm wide (x̄ = 80 × 6 μm, n = 20), 405–546 μm long, loosely coiled 1–2.5 times, rounded at apical end, up to 68-septate, slightly constricted at septa, hyaline, smooth-walled. (Hyde et al. 2016)
Culture characteristics: Conidia germinating on water agar (WA) within 8 h and germ tubes produced from conidia. Colonies on malt extract agar (MEA) reaching 4 mm in 1 week at 28 °C, brown to dark brown. Mycelium superficial and partially immersed, branched, septate, hyaline to pale brown, smooth.
Material examined: THAILAND, Uttaradit, Laplae, Mae Phun, Ban Ton Klua, on decaying wood in flowing freshwater stream, 24 October 2015, Saranyaphat Boonmee, UTD15–1 (MFLU 16-1338, holotype, BBH 41053, isotype); ex-type living culture, MFLUCC 16-0213, TBRC.
Notes: Notes: This taxon was introduced as Chlamydotubeufia helicospora by Hyde et al. (2016). Morphologically, it resembles to Helicomyces torquatus and H. hyalosporus in having short conidiophores with 0–3-septate, and helicoid conidia with a spathulate basal end cell, but can be distinguished by its pale brown conidiophores, and narrower and loose helicoid conidia. Based on morphology and phylogeny, we synonymize this taxon under Dematiohelicomyces helicosporus. (Notes from Lu et al. 2018)
Freshwater distribution: Thailand (Hyde et al. 2016; Lu et al. 2018)
Fig 1. Chlamydotubeufia helicospora (MFLU 16–1338, holotype). a Conidia arise directly from hyphal cells on natural substrate. b Conidiophores with attached conidia. c Conidiogenous cells. d Germinating conidium. e–h Conidia. i–j Colonies on MEA from above and below. Scale bars a = 500 μm, b, e–h = 50 μm, c = 20 μm, d = 100 μm, i–j = 20 mm (Hyde et al. 2016)
References
Lu YZ, Liu JK (Jack), Hyde KD, Jeewon R, Kang JC, Fan C, Boonmee S, Bhat DJ, Luo ZL, Lin CG, Eungwanichayapant PD (2018) A taxonomic reassessment of Tubeufiales based on multi-locus phylogeny and morphology. Fungal Divers 92:131–344. https://doi.org/10.1007/s13225-018-0411-y
Hyde KD, Hongsanan S, Jeewon R, Bhat DJ, McKenzie EHC, Jones EBG, Phookamsak R, Ariyawansa HA, Boonmee S, Zhao Q, Abdel-Aziz FA, Abdel-Wahab MA, Banmai S, Chomnunti P, Cui BK, Daranagama DA, Das K, Dayarathne MC, de Silva NI, Dissanayake AJ, Doilom M, Ekanayaka AH, Gibertoni TB, Góes-Neto A, Huang SK, Jayasiri SC, Jayawardena RS, Konta S, Lee HB, Li WJ, Lin CG, Liu JK, Lu YZ, Luo ZL, Manawasinghe IS, Manimohan P, Mapook A, Niskanen T, Norphanphoun C, Papizadeh M, Perera RH, Phukhamsakda C, Richter C, André ALCM, Drechsler-Santos ER, Senanayake IC, Tanaka K, Tennakoon TMDS, Thambugala KM, Tian Q, Tibpromma S, Thongbai B, Vizzini A, Wanasinghe DN, Wijayawardene NN, Wu HX, Yang J, Zeng XY, Zhang H, Zhang JF, Bulgakov TS, Camporesi E, Bahkali AH, Amoozegar MA, Araujo-Neta LS, Ammirati JF, Baghela A, Bhatt RP, Bojantchev D, Buyck B, da Silva GA, de Lima CLF, de Oliveira RJV, de Souza CAF, Dai YC, Dima B, Duong TT, Ercole E, Mafalda-Freire F, Ghosh A, Hashimoto A, Kamolhan S, Kang JC, Karunarathna SC, Kirk PM, Kytövuori I, Lantieri A, Liimatainen K, Liu ZY, Liu XZ, Lücking R, Medardi G, Mortimer PE, Nguyen TTT, Promputtha I, Raj KNA, Reck MA, Lumyong S, Shahzadeh-Fazeli SA, Stadler M, Soudi MR, Su HY, Takahashi T, Tangthirasunun N, Uniyal P, Wang Y, Wen TC, Xu JC, Zhang ZK, Zhao YC, Zhou JL, Zhu L (2016) Fungal diversity notes 367–490: taxonomic and phylogenetic contributions to fungal taxa. Fungal Divers 80:1–270. https://doi.org/10.1007/s13225-016-0373-x
Recent Genus
1Neochlamydotubeufia
Neohelicomyces
Recent Species
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Neohelicomyces grandisporus