Tubeufiales » Tubeufiaceae » Tubeufia

Tubeufia tectonae

Tubeufia tectonae Doilom & K.D. Hyde

Synonymy: Tubeufia roseohelicospora Y.Z. Lu, Boonmee & K.D. Hyde, Fungal Diversity 80: 128 (2016)

 

Saprobic on submerged wood. Sexual morph: Undetermined. Asexual morph: Colonies on natural substratum superficial, effuse, gregarious, hyaline to white. Mycelium composed of partly immersed, hyaline to pale brown, septate hyphae, with masses of crowded, glistening conidia. Conidiophores 40–60 × 5–7 μm, macronematous, mononematous, erect, cylindrical, unbranched, septate, brown, smooth-walled. Conidiogenous cells 15–20 × 4–5.5 µm, holoblastic, polyblastic, integrated, sympodial, terminal or intercalary, subcylindrical, denticulate, brown, smooth-walled. Conidia solitary, acrogenous or acropleurogenous, helicoid, rounded at tip, 80–130 μm diam. and conidial filament 3.5–6.5 μm wide (x̄ = 105 × 5 μm, n = 10), 370–450 μm long, coiled 1.25–2 times, becoming loosely coiled or uncoiled in water, indistinctly multi-septate, guttulate, hyaline, smooth-walled. (Dong et al. 2020)

 

Culture characteristics: On PDA, colony circular, reaching 30 mm in 20 days at 25 °C, grey to brown from above and below, surface rough, with sparse superficial mycelium, most mycelium immersed in culture, dry, edge undulate.

 

Material examined: THAILAND, Prachuap Khiri Khan Province, on submerged wood in a stream, 30 July 2015, K.D. Hyde, 34D (MFLU 15-2696), living culture MFLUCC 15-0974.

 

Notes: Tubeufia tectonae was initially collected from bark of Tectona grandis and characterized by subhyaline to white colonies, mostly loosely coiled conidia (Doilom et al. 2017). Later, a new freshwater species T. roseohelicospora Y.Z. Lu et al. was introduced based on light pink colonies, tightly coiled conidia and wider conidial filaments (Hyde et al. 2016). Lu et al. (2018) found another two isolates of T. roseohelicospora and two isolates of T. tectonae from freshwater habitats, with additional TEF sequence data. However, all isolates of the two species, including our new collection MFLU 15-2696, do not show phylogenetic difference in the phylogenetic tree (Lu et al. 2018; Dong et al. 2020). Furthermore, they have nearly identical TEF sequence data which indicates that they are conspecific. We, therefore, synonymize T. roseohelicospora with T. tectonae. (Dong et al. 2020)

 

Freshwater distribution: Thailand (Hyde et al. 2016; Lu et al. 2018; Dong et al. 2020)

 

Fig 1 Tubeufia tectonae (MFLU 15-2696). a Colonies on submerged wood. b, c Conidiophores with conidia. d Conidiophore with conidiogenous cell. e Conidial filament. f–i Conidia. j Germinated conidium. k, l Colony on PDA (up-front, down-reverse). Scale bars: a = 100 μm, b, c = 20 μm, d, e = 5 μm, f–j = 50 μm (Dong et al. 2020)

 

References

Doilom M, Dissanayake AJ, Wanasinghe DN, Boonmee S, Liu J-K, Bhat DJ, Taylor JE, Bahkali AH, McKenzie EHC, Hyde KD (2017) Microfungi on Tectona grandis (teak) in Northern Thailand. Fungal Divers 82:107–182. https://doi.org/10.1007/s13225-016-0368-7

Dong W, Wang B, Hyde KD, McKenzie EHC, Raja HA, Tanaka K, Abdel-Wahab MA, Abdel-Aziz FA, Doilom M, Phookamsak R, Hongsanan S, Wanasinghe DN, Yu X-D, Wang G-N, Yang H, Yang J, Thambugala KM, Tian Q, Luo Z-L, Yang J-B, Miller AN, Fournier J, Boonmee S, Hu D-M, Nalumpang S, Zhang H (2020) Freshwater Dothideomycetes. Fungal Divers 105:319–575. https://doi.org/10.1007/s13225-020-00463-5

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

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

 

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