Pleosporales » Tetraplosphaeriaceae » Shrungabeeja

Shrungabeeja aquatica

Shrungabeeja aquatica W. Dong, G.N. Wang & H. Zhang

Index Fungorum number: IF557935; Facesoffungi number: FoF09279

Etymology: referring to aquatic habitat of this fungus

Holotype: MFLU 18-0978

 

Saprobic on submerged wood. Sexual morph: Undetermined. Asexual morph: Colonies effuse, brown to dark brown. Mycelium partly superficial, partly immersed, composed of branched, septate, pale brown hyphae. Conidiophores 140–260 μm long, 6–8.5 μm wide, macronematous, mononematous, erect, straight or flexuous, unbranched, smooth, thick-walled, 4–10-septate, pale- to dark brown. Conidiogenous cells 7–10 μm long, 5–5.5 μm wide at base, up to 3.2 μm wide at the apex, monoblastic, terminal, lageniform, determinate or percurrently proliferating, pale brown to brown, smooth. Conidia 30–40 μm diam. (x̄ = 35 μm, n = 15), solitary, dry, acrogenous, subglobose, aseptate, pale brown to brown, internally filled with a mass of hyaline, septate hyphae sometimes with swollen cells, with 4(–5) appendages. Appendages 12–135 × 2.5–3.5 μm, filiform, 5–7- septate, smooth, pale brown to brown. (Descriptions from Dong et al. 2020)

 

Culture characteristics: On PDA, colony circular, reaching 5 mm in 15 days at 25 °C, grey from above and below, surface rough, with dense mycelium, dry, raised, edge entire.

 

Material examined: THAILAND, Chiang Mai Province, on submerged wood in a stream, 29 March 2018, G.N. Wang, L1 (MFLU 18-0978, holotype), ex-type living culture MFLUCC 18-0664.

 

Notes: Shrungabeeja aquatica is similar to S. vadirajensis in conidial size and length of appendages (Zhang et al. 2009). However, the former has obvious percurrent proliferations of conidiogenous cells, which are not obvious in S. vadirajensis. Phylogenetic analysis of Dong et al. (2020) separates them as distinct species. (Notes from Dong et al. 2020)

 

Freshwater distribution: Thailand (Dong et al. 2020)

 

Fig 1. Shrungabeeja aquatica (MFLU 18-0978, holotype). a, b Colonies on submerged wood, c–e Conidiophores with conidiogenous cells, f–j Conidia. Scale bars: c, f, i, j = 30 μm, d, e = 15 μm, g, h = 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

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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