Kirschsteiniotheliales » Kirschsteiniotheliaceae » Kirschsteiniothelia

Kirschsteiniothelia tectonae

Kirschsteiniothelia tectonae Doilom, Bhat & K.D. Hyde, in Li et al., Fungal Diversity 78: 68 (2016)

Index Fungorum number: IF 551992; Facesoffungi number: FoF 01883

Saprobic on Microcos paniculata (Malvaceae) woody litter in terrestrial habitats. Sexual morph: Not observed. Asexual morph: Hyphomycetes. Colonies on the substrate, hairy, superficial, dark brown, scattered, partially grouped. Conidiophores 59–90 × 8.6–12 μm (x̄ = 75 × 10.7 μm, n = 10), superficial, simple, macronematous, mononematous, cylindrical, straight to slightly curved, branched or unbranched, septate, dark brown to black. Conidiogenous cells 7–9.4 × 6–7.3 μm (x̄ = 8 × 6.7 μm, n = 5), monoblastic, determinate, integrated, terminal. Conidia 62.5– 133 × 11 – 18.5(–21) μm (x̄ = 94 × 16 μm, n = 30), cylindrical-obclavate, elongate, straight to slightly curved, rounded being slightly paler at the apex, obconically truncate at the base, 7–12–septa, olivaceous green to brown, smooth–walled.

Culture characteristics: Conidia germinating on PDA within 24 hours, reaching up to 15–20 mm diam. after one week at room temperature. Germ tubes generated from basal cells. Colony on PDA, dense, circular, flat or effuse, velvety, from front brown at the centre and black at the edge, from reverse, dark brown.

Material examined: Thailand, Chiang Rai, Mae Fa Luang, Doi Tung, on dead wood of Microcos paniculata, 6 June 2022, N. Afshari 3C2T3R5 (MFLU 23–0416), living culture MFLUCC 23–0272. On dead wood of Dalbergia cana, 3 March 2022, N. Afshari 4C1T2R3 (MFLU 23–0417), living culture MFLUCC 23–0272.

 

Figure 1. Maximum Likelihood phylogenetic tree generated from ITS, LSU and SSU sequence data for selected Kirschsteiniotheliales and related Dothideomycetes orders. The tree is rooted with Stemphylium vesicarium (CBS 191.86 and MFLUCC 14–0920). Newly-generated sequences are in blue and new species are in bold. Holotype and ex-type strains are symbolic by “T”. Maximum Likelihood bootstrap (MLBS) values ≥ 70% and Bayesian posterior probabilities (BYPP) ≥ 0.95 are shown at the nodes.

 

Figure 2. Kirschsteiniothelia tectonae (MFLUCC 23–0271, new record) a, b colonies on wood c–e conidiophores with conidia and conidiogenous cells f–k conidia l germinated conidium m, n culture on PDA (front and reverse). Scale bars: 100 μm (a, b); 50 μm (c–e, l); 20 μm (f–k).

 

References

1. de Farias ARG, Afshari N, Silva VSH, Louangphan J, Karimi O, Boonmee S (2024) Three novel species and new records of Kirschsteiniothelia (Kirschsteiniotheliales) from northern Thailand. MycoKeys 101: 347–370. https://doi.org/10.3897/mycokeys.101.115286

 

 

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