Pleosporales » Tetraplosphaeriaceae » Shrungabeeja

Shrungabeeja vadirajensis

Shrungabeeja vadirajensis V.G. Rao & K.A. Reddy

Index Fungorum number: IF 111926; Facesoffungi number: FoF09280

 

Saprobic on submerged wood. Sexual morph: Undetermined. Asexual morph: Colonies effuse, blackish brown. Mycelium superficial or immersed. Conidiophores 135–220 μm long, 6–7 μm wide, macronematous, mononematous, erect, cylindrical, pale brown to deep brown, unbranched, 4–7-septate, straight or flexuous, smooth, thick-walled. Conidiogenous cells monoblastic, determinate or percurrently proliferative, pale brown to brown, smooth. Conidia 28–45 μm diam. (x̄ = 32.5 μm, n = 15), 3–4 μm wide at the base, acrogenous, subglobose, ellipsoidal, or turbinate, aseptate, internally filled with a mass of hyaline, septate hyphae sometimes with swollen cells, with (3–)4 horn-like appendages in the anterior region, appendages 20–110 μm long, 3–5.5 μm wide at the base and 1.5–2.5 μm wide at the apex. (Description from Dong et al. 2020)

 

Culture characteristics: On PDA, colony circular, reaching 20 mm in 15 days at 25 °C, grey from above, dark brown from below, surface rough, with dense mycelium, dry, raised, edge curved.

 

Material examined: THAILAND, Chiang Mai Province, on submerged wood in a stream, 1 September 2017, X.D. Yu, 4A (MFLU 17-1721), living culture MFLUCC 17-2362.

 

Notes: New collection, MFLUCC 17-2362, of Dong et al. (2020) is identified as Shrungabeeja vadirajensis based on the characters of conidia (shape and size), appendages (number and length), conidiophores (length and width) and from tropical area (Zhang et al. 2009). Dong et al. (2020) found several hyaline, septate hyphae or sometimes swollen cells in the conidia which were not described in HMAS189369 (Zhang et al. 2009).

 

Furthermore, Dong et al. (2020) confirm the placement of Shrungabeeja in Tetraplosphaeriaceae based on the fresh specimen of the type species with molecular data and hyaline, septate hyphae in conidia, which are also present in Ernakulamia, Polyplosphaeria and Quadricrura Kaz. Tanaka et al. (Tanaka et al. 2009). This is a new habitat and geographical record for S. vadirajensis from freshwater in Thailand.

 

Freshwater distribution: Thailand (Dong et al. 2020)

 

Fig 1. Shrungabeeja vadirajensis (MFLU 17-1721). a, b Colonies on submerged wood, c–h Conidiophores, conidogenous cells and conidia, i–m Conidia, n, o Colony on PDA (up-front, down-reverse). Scale bars: c–k = 30 μm, l, m = 50 μm (Dong et al. 2020)

 

References

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

Tanaka K, Hirayama K, Yonezawa H, Hatakeyama S, Harada Y, Sano T, Shirouzu T, Hosoya T (2009) Molecular taxonomy of bambusicolous fungi: Tetraplosphaeriaceae, a new pleosporalean family with Tetraploa-like anamorphs. Stud Mycol 64:175–209. https://doi.org/10.3114/sim.2009.64.10

Zhang K, Ma LG, Zhang XG (2009) New species and records of Shrungabeeja from southern China. Mycologia 101:573–578. https://doi.org/10.3852/09-006

 

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