Chaetosphaeriales » Chaetosphaeriaceae » Kionochaeta

Kionochaeta microspora

Kionochaeta microspora C.G. Lin & K.D. Hyde, Mycosphere 10: 678 (2019)                                 Fig. X

Index Fungorum number: IF556708; Facesoffungi number: FoF 06289

Culture characteristics – Colonies on PDA at 25 ℃, become 2–3 cm diameter after 7 days, appearing in white become olive-green to dark green at the center, rind-like at the edge when mature, reverse yellowish-white at the center with olive-green to dark green rind at the edge, semi immersed to superficial, setae present and have a slimy raised surface with a filiform margin. Mycelium immersed to semi immersed, hyaline, producing immature aseptate, smooth-surfaced hyphae, becoming septate, less-branched, course-surfaced hyphae, sporulated after 4 weeks. Sexual morph: Undetermined. Asexual morph: Conidiophores 40–45.5 × 2–3 (x̅ = 43 × 2.5) μm, macronematous, mononematous, caespitose, erect, straight or slightly curved, smooth-walled, thick-walled, unbranched, septate, hyaline, cylindrical at the apex or middle fertile region when present 12–21 × 2–4.5 μm. Conidiogenous cells 3–4.5 × 2–3 (x̅ = 3.8 × 2.5) μm, arising from the fertile region at the apex, hyaline monophialidic, discrete, determinate, terminal, narrowly ellipsoid, ampulliform. Conidia 2–4.5 × 1.5–3 μm (x̅ = 3.3 × 2.3 μm, n = 25), hyaline, spherical to ovate, and aseptate, smooth-walled.

Material examined – Thailand, Krabi Province, Khao Phanom District, Na Khao, 8.3811N, 98.9286 E, in tropical forest soil, 28 April 2019, E. Yasanthika, ES1 (MFLU 21-0143, living culture (MFLUCC 21-0109).

Notes – Kionochaeta microspora, was originally isolated from decaying wood in China which was initially introduced by Lin et al. (2019). Therefore, we report our collection (MFLUCC 21-0109) as the first record of soil-inhabiting Kionochaeta microspora.

Fig. X – Kionochaeta microspora (MFLUCC 21-0109) a Colony from above (on PDA). b Colony from below (on PDA). c Sporulated colony with conidial attachments on the mycelium. d Immature hyphae. e Mature septate course-surfaced hyphae. f Chlamydospore on the mycelium. g–i Conidiogenesis on the conidiophores. j, k Conidia attached to detached phialides. l–o Conidia

Scale bars: d = 25 μm, e = 20 μm, f = 10 μm, g–o = 5 μm.

 

References:

Lin CG, McKenzie EHC, Liu JK, Jones EBG, Hyde KD. 2019 – Hyaline-spored chaetosphaeriaceous hyphomycetes from Thailand and China, with a review of the family Chaetosphaeriaceae. Mycosphere 10, 655–700.

 

 

Source:

 

Data and figures were reprinted with permission from:

Yasanthika E, Tennakoon DS, Farias ARG, Bhat DJ, Wanasinghe DN. 2022 – New soil-inhabiting Chaetosphaeriaceous records from Thailand. Asian Journal of Mycology 5(1), 16–30, Doi 10.5943/ajom/5/1/2   -in AJOM.

 

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