Pseudoachroiostachys krabiense
Pseudoachroiostachys krabiense Tibpromma & K.D. Hyde [as 'krabiense'], in Tibpromma et al., Fungal Diversity: 10.1007/s13225-018-0408-6, [108] (2018)
Index Fungorum number: IF554548 Facesoffungi number: FoF04555
Sexual morph: Undetermined. Asexual morph: Conidiophores 40–50 × 3.5–4.5 μm (x̄ = 46 × 4 μm, n = 20), macronematous, mononematous, single, unbranched, erect, straight, 1–3-septate, slightly thick-walled towards the base, smooth, hyaline and glassy, bearing a whorl of 5–6 conidiogenous cells. Conidiogenous cells 6–8 × 1–2.5 μm (x̄ = 7 × 2 μm, n = 20), terminal, phialidic, discrete, cylindrical, hyaline, smooth, 10–13 × 3.5–4.5 μm, narrowing to a short neck about 1 μm. Conidia 5–9 × 3–4 μm (x̄ = 7 × 3.5 μm, n = 40), ovoid, in a group, aseptate, sometimes flattened on one side, smooth, hyaline, with rounded apex, slimy in mass, without mucilaginous sheath.
Culture characteristics: Conidia germinating on MEA within 12 h. Colonies on MEA, circular with whorls, undulate, white, smooth and raised on surface media, velvety.
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., 15 December 2015, S. Tibpromma KB037 (MFLU 16-1915, holotype; HKAS 96264, isotype); ex-type living culture, MFLUCC 16-0325.
GenBank Accession No: LSU: MH376736; ITS: MH388362; SSU: MH388328; TEF1: MH388397.
Notes: Achroiostachys aurantispora L. Lombard & Crous has similar morphology with Pseudoachroiostachys krabiense in having similar colonies on host plant and conidiophores. Achroiostachys aurantispora has elongate ampulliform to ventricose or clavate conidiogenous cells and ellipsoidal conidia (Lombard et al. 2016) while Pseudoachroiostachys krabiense has cylindrical conidiogenous cells and ovoid conidia.
Figure X. Pseudoachroiostachys krabiense (MFLU 16-1915, holotype). a Colonies on dead leaf of Pandanus sp. b Conidiophores, conidiogenous cells and conidia. c Conidiogenous cells and conidia. d–f Conidia. g Germinating conidium. h, i Colonies on MEA from above and below. Scale bars: a = 50 μm, b, c, g = 5 μm, d–f = 2 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.
Recent Genus
BoeremiaSeptofusispora
Neolophiotrema
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Septofusispora thailandic