Pleosporales » Didymellaceae » Juxtiphoma

Juxtiphoma yunnanensis

Juxtiphoma yunnanensis Yasanthika, G.C. Ren & K.D. Hyde, sp. nov.

Index Fungorum number: IF558129, Facesoffungi number: FoF09617, Fig X.

Etymology – The specific epithet “yunnanensis” refers to the locality Yunnan Province (China), where the species was collected.

Holotype – HKAS 107656

 

Culture characteristics: —Colonies on PDA reach to 4–6 cm diam. after 21 days at 25 °C, becoming flattened with irregular to lobate margins. Mycelium have a cottony to wooly surface, center is smoke grey to olivaceous grey becoming pale brown to brownish yellow at margin; reverse dark grey to black at the centre, with pale brown to brownish yellow at the edge. Hyphae 2–5 μm wide, aerial to semi-immersed and branched, hyaline aseptate, immature hyphae become pale brown septate when mature. Chlamydospores produced from mature hyphae, terminal or intercalary, solitary, or in simple or branched chains, barrel-shaped, globose to subglobose or ellipsoidal to elongated, pale brown to brown, becoming 2–8 guttulate when mature, 4–11 × 3–7 µm (x̄ = 7 × 5 μm, n = 20)

            Material examined: — China, Yunnan Province, Kunming City, 25.047865N 102.721724 E, industrial waste-contaminated soil, 16 December 2019, G.C. Ren (HKAS 107656, holotype); ex-type living culture, KUMCC 20-0227.

          Known hosts and substrates: — Soil

Known distribution: — China

GenBank Accession No – ITS: MW600334, LSU: MW587029, btub: MW602383, rpb2: MW603001.

 

 

 

Fig X. Juxtiphoma yunnanensis (HKAS 107657, holotype) a. Colony from above. b. Colony from below. c. Mycelia appear on the colony. d. Immature aseptate hyphae e. Mature septate hyphae. f. Terminal branched and chained chlamydospores formation. g, h. Intercalary and solitary chlamydospores formation. i. Solitary and simple chlamydospores formation j–m. Chlamydospores chains. Scale bars: e = 25 μm, d, f, j = 20 μm, g, h, i, k–m = 10 μm

 

Retrieved from:

Yasanthika E, Wanasinghe DN, Ren GC, Karunarathna SC et al. 2021 – Taxonomic and phylogenetic insights into novel Ascomycota from contaminated soils in Yunnan, China. Phytotaxa, 513, 203-225. https://doi.org/10.11646/phytotaxa.513.3.2

 

 

 

 

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