Pleosporales » Dictyosporiaceae » Pseudocoleophoma

Pseudocoleophoma typhicola

Pseudocoleophoma typhicola E.B.G. Jones, Kamolhan, Boonmee & K.D. Hyde

Index Fungorum number: IF552326; Facesoffungi number: FoF02444

Etymology: Referring to the host plant Typha latifolia.

Holotype: MFLU 16-0966.

 

Saprobic on submerged stems in freshwater. Sexual morph Undetermined. Asexual morph Conidiomata forming as dark spots on the host surface, 140–150 μm high × 60–100 μm diam. (x̄ = 143 × 80 μm, n = 15), semi-erumpent in the host tissue, uniloculate solitary to scattered, subglobose, brown to black. Peridium 40–45 μm at base, 40–45 μm at sides, comprising 4–5 layers, hyaline to dark brown, thick-walled cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 2–5 × 2–5 μm (x̄ = 2 × 3 μm, n = 15), enteroblastic, smooth-walled, hyaline. Conidia 9–11 × 2–3 μm (x̄ = 10 × 3 μm, n = 20), hyaline, oblong to cylindrical, with rounded or obtuse ends, 1-euseptate, smooth, thin-walled, guttulate.

 

Culture characteristics: Colonies on PDA 3 cm diam. after 4 weeks at 16 °C, dirty white to pale brown at the margin, pale brown to creamy at the center; reverse iron, thin, curled, flat.

 

Material examined: UK, Hampshire, Swanick Lakes, on submerged stems of Typha latifolia (Typhaceae) in freshwater, 28 August 2015, E.B.G. Jones, GJ190 (MFLU 16–0966, holotype, HKAS94520 isotype), ex-type living culture, MFLUCC 16–0123, KUMCC 16-0007.

 

Notes: Pseudocoleophoma typhicola is different from P. polygonicola and P. calamagrostidis in having conidiomata without neck and with a wide peridium (40–45 μm at base, 40–45 μm at sides), enteroblastic, 3-septate conidia while P. polygonicola and P. calamagrostidis have conidiomata with a long neck, phialidic, aseptate conidia. Phylogenetic analyses indicate that Pseudocoleophoma typhicola is related to P. polygonicola and P. calamagrostidis with high support, but it can be recognized as a new species as it stands on its own with relatively good support (Hyde et al. 2016).

 

References

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, Goes-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, Santiago A, Drechsler-Santos ER, Senanayake IC, Tanaka K, Tennakoon T, 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, Kytovuori I, Lantieri A, Liimatainen K, Liu ZY, Liu XZ, Lucking 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

 

Fig 1. Pseudocoleophoma typhicola (holotype). a. Appearance of conidiomata on host substrate, b. Close up of conidioma, c. Vertical section through conidiomata, d. Conidia attached to conidiogenous cells, e–l. Immature to mature conidia, m. Germinated conidium. Scale bars: a = 1 mm b = 100 μm, c = 50 μm, d–l = 5 μm, m = 10 μm. (Hyde et al. 2016)

 

Fig 2. Pseudocoleophoma typhicola (ex-type culture). a, b. Culture on PDA (note b reverse), c. Conidioma on PDA, d. Vertical section through conidioma, e. Peridium, f. Conidia attached to conidiogenous cells, g–k. Mature and immature conidia. Scale bars: d = 1 mm e = 50 μm, f–k = 20 μm. (Hyde et al. 2016)

 

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