Juxtiphoma yunnanensis Yasanthika, G.C. Ren & K.D. Hyde, 2021

Yasanthika, Erandi, Wanasinghe, Dhanushka N., Ren, Guang-Cong, Karunarathna, Samantha C., Tennakoon, Danushka S., Monkai, Jutamart, Gui, Heng, Mortimer, Peter E., Lumyong, Saisamorn & Hyde, Kevin D., 2021, Taxonomic and phylogenetic insights into novel Ascomycota from contaminated soils in Yunnan, China, Phytotaxa 513 (3), pp. 203-225 : 212-214

publication ID	https://doi.org/ 10.11646/phytotaxa.513.3.2
DOI	https://doi.org/10.5281/zenodo.5320402
persistent identifier	https://treatment.plazi.org/id/F116527B-FFA4-7D2F-81C2-AD3FFDCD92D2
treatment provided by	Felipe
scientific name	Juxtiphoma yunnanensis Yasanthika, G.C. Ren & K.D. Hyde
status	sp. nov.

Treatment

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

Index Fungorum number: IF558129, Facesoffungi number: FoF09617, FIGURE 4 View FIGURE 4 .

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

Holotype — HKAS 107656 View Materials

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 wastecontaminated soil, 16 December 2019, G.C. Ren ( HKAS 107656 View Materials , holotype); ex-type living culture, KUMCC 20- 0227 GoogleMaps .

Known hosts and substrates:— Soil

Known distribution:— China

GenBank Accession No:— ITS: MW 600334 View Materials , LSU: MW 587029 View Materials , btub: MW 602383 View Materials , rpb 2: MW 603001 View Materials .

Notes:— Juxtiphoma is a poorly studied genus with only two species viz. J. eupyrena and J. kolkmaniorum ( Species Fungorum 2021) . Juxtiphoma eupyrena has dark green colonies becoming black due to chlamydospore formation on Oatmeal Agar ( OA), while J. kolkmaniorum has an isabelline to olivaceous colony. Juxtiphoma yunnanensis ( KUMCC 20-0227) has smoke grey to olivaceous grey colonies becoming pale brown to brownish yellow at the margin on PDA. Both J. kolkmaniorum and J. eupyrena have conidia-bearing pycnidia on cultures in OA ( Valenzuela-Lopez et al. 2018, Hou et al. 2020). However, we did not see any pycnidial formation of Juxtiphoma yunnanensis ( KUMCC 20-0227) colonies in PDA. Nevertheless, Juxtiphoma yunnanensis ( KUMCC 20-0227) has abundant chlamydospores formation on PDA culture, which is a common character to Juxtiphoma ( Valenzuela-Lopez et al. 2018, Hou et al. 2020). The combined phylogenetic analysis (ITS-LSU- btub -rpb 2) indicates that our new strain constitutes a distant lineage from Juxtiphoma eupyrena and J. kolkmaniorum with 99% ML, 1.00 BYPP statistical support ( FIGURE 1 View FIGURE 1 ). We introduce this novel lineage as Juxtiphoma yunnanensis sp. nov., which was isolated from industrial waste-contaminated soil in Kunming City, Yunnan Province, China.