Juxtiphoma yunnanensis Yasanthika, G. C. Ren &amp; K. D. Hyde 2021, sp. nov.
Creators: name: Yasanthika, Erandi
name: Wanasinghe, Dhanushka N.
name: Ren, Guang-Cong
name: Karunarathna, Samantha C.
name: Tennakoon, Danushka S.
name: Monkai, Jutamart
name: Gui, Heng
name: Mortimer, Peter E.
name: Lumyong, Saisamorn
name: Hyde, Kevin D.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Dothideomycetes
Pleosporales
Didymellaceae
Juxtiphoma
Juxtiphoma yunnanensis

description: <i>Juxtiphoma yunnanensis</i> Yasanthika, G.C. Ren &amp; K.D. Hyde, <i>sp. nov.</i> <i>Index Fungorum number</i>: IF558129, <i>Facesoffungi number</i>: FoF09617, FIGURE 4. Etymology—The specific epithet “ <i>yunnanensis</i> ” refers to Yunnan Province (China), where the species was collected. Holotype — HKAS 107656 <b>Culture characteristics:—</b> <i>Colonies</i> on PDA reach to 4–6 cm diam. after 21 days at 25 °C, becoming flattened with irregular to lobate margins. <i>Mycelium</i> 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. <i>Hyphae</i> 2–5 μm wide, aerial to semi-immersed and branched, hyaline aseptate, immature hyphae become pale brown septate when mature. <i>Chlamydospores</i> 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). <b>Material examined:—</b> China, Yunnan Province, Kunming City, 25.047865N 102.721724 E, industrial wastecontaminated soil, 16 December 2019, G.C. Ren (HKAS 107656, <b>holotype</b>); ex-type living culture, KUMCC 20- 0227. <b>Known hosts and substrates:—</b> Soil <b>Known distribution:—</b> China <b>GenBank Accession No:—</b> ITS: MW 600334, LSU: MW 587029, <i>btub</i>: MW 602383, <i>rpb</i> 2: MW 603001. Notes:— <i>Juxtiphoma</i> is a poorly studied genus with only two species <i>viz</i>. <i>J. eupyrena</i> and <i>J. kolkmaniorum</i> (Species Fungorum 2021). <i>Juxtiphoma eupyrena</i> has dark green colonies becoming black due to chlamydospore formation on Oatmeal Agar (OA), while <i>J. kolkmaniorum</i> has an isabelline to olivaceous colony. <i>Juxtiphoma yunnanensis</i> (KUMCC 20-0227) has smoke grey to olivaceous grey colonies becoming pale brown to brownish yellow at the margin on PDA. Both <i>J. kolkmaniorum</i> and <i>J. eupyrena</i> have conidia-bearing pycnidia on cultures in OA (Valenzuela-Lopez <i>et al</i>. 2018, Hou <i>et al</i>. 2020). However, we did not see any pycnidial formation of <i>Juxtiphoma yunnanensis</i> (KUMCC 20-0227) colonies in PDA. Nevertheless, <i>Juxtiphoma yunnanensis</i> (KUMCC 20-0227) has abundant chlamydospores formation on PDA culture, which is a common character to <i>Juxtiphoma</i> (Valenzuela-Lopez <i>et al</i>. 2018, Hou <i>et al</i>. 2020). The combined phylogenetic analysis (ITS-LSU- <i>btub -rpb</i> 2) indicates that our new strain constitutes a distant lineage from <i>Juxtiphoma eupyrena</i> and <i>J. kolkmaniorum</i> with 99% ML, 1.00 BYPP statistical support (FIGURE 1). We introduce this novel lineage as <i>Juxtiphoma yunnanensis sp. nov.</i>, which was isolated from industrial waste-contaminated soil in Kunming City, Yunnan Province, China.
description: Published as part of <i>Yasanthika, Erandi, Wanasinghe, Dhanushka N., Ren, Guang-Cong, Karunarathna, Samantha C., Tennakoon, Danushka S., Monkai, Jutamart, Gui, Heng, Mortimer, Peter E., Lumyong, Saisamorn &amp; Hyde, Kevin D., 2021, Taxonomic and phylogenetic insights into novel Ascomycota from contaminated soils in Yunnan, China, pp. 203-225 in Phytotaxa 513 (3)</i> on pages 212-214, DOI: 10.11646/phytotaxa.513.3.2, http://zenodo.org/record/5312444
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