Hypocreales » Nectriaceae » Volutella

Volutella krabiense

Volutella krabiense Tibpromma & K.D. Hyde [as 'krabiense'], in Tibpromma et al., Fungal Diversity: 10.1007/s13225-018-0408-6, [110] (2018)

Index Fungorum number: IF554539         Facesoffungi number: FoF04547

 

Sexual morph: Undetermined. Asexual morph: Hyphomycetous. Setae 60–113 × 2–4 μm (x̄ = 92 × 3 μm, n = 10), hyaline, aseptate, cylindrical with conical apex. Conidiophores aggregated into sporodochia, with hyaline, stiff setae around the margin of conidiomata. Conidiogenous cells 2–4 × 2–3.5 μm (x̄ = 3 × 2.5 μm, n = 20), monophialidic, hyaline, subulate. Conidia 3–4 × 1–2 μm (x̄ = 3.4 × 1.5 μm, n = 30), slimy, aseptate, hyaline, oblong, guttulate, without mucilaginous sheath.

 

Culture characteristics: Conidia germinating on MEA within 12 h. Colonies on MEA, irregular, undulate edge with curled, white, flat on media surface.

 

Habitat: Known to inhabit Saprobic on dead leaves of Pandanus sp.

 

Known distribution: Thailand.

 

Material examined: Thailand, Krabi Province, Mueang Krabi District, on Pandanus sp., 14 December 2015, S. Tibpromma SF15-030 (MFLU 16-1932, holotype; HKAS 96281, isotype); ex-type living culture, MFLUCC 16-0268 = KUMCC 17-0305.

 

GenBank Accession No: LSU: MH376741; ITS: MH388367; SSU: MH388331; TEF1: MH388401.

 

Notes: Volutella krabiense has a close phylogenetic affinity to V. thailandensis in multi-gene phylogenetic analysis. Volutella krabiense has smaller conidia than V. thailandensis (4 × 1.3 vs. 5 × 2 lm) and conidiomata of V. thailandensis lack setae. In a BLASTn search on NCBI GenBank, the closest matches of SSU sequence of MFLUCC 16-0268 is V. aeria with 99% identity to the strain CGMCC 3.17945 (KY883302).

Figure X. Volutella krabiense (MFLU 16-1932, holotype). a, b Sporodochial conidiomata on dead leaves of Pandanus sp. c, d Conidiophores, conidiogenous cells and conidium. e Conidia strain with cotton blue. f Germinating conidium. g, h Colonies on MEA from above and below. Scale bars: b = 50 μm, c = 20 μm, d–f = 5 μm.

 

Reference: Tibpromma S, Hyde KD, McKenzie EHC, Bhat DJ, Phillips AJL, Wanasinghe DN, Samarakoon MC, Jayawardena RS, Dissanayake AJ, Tennakoon DS, Doilom M, Phookamsak R, Tang AMC, Xu JC, Mortimer PE, Promputtha I, Maharachchikumbura SSN, Khan S, Karunarathna SC (2018) Fungal diversity notes 840–928: micro-fungi associated with Pandanaceae. Fungal Diversity. 93:1-160.

 

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