Chrysosporium clavisporum Y.W. Zhang, Y.F. Han & Z.Q. Liang, 2017

Zhang, Yan-Wei, Zeng, Gui-Ping, Zou, Xiao, Han, Yan-Feng, Liang, Zong-Qi & Qiu, Shu-Yi, 2017, Two new keratinophilic fungal species, Phytotaxa 303 (2), pp. 173-180 : 177

Chrysosporium clavisporum Y.W. Zhang, Y.F. Han & Z.Q. Liang sp. nov. ( Fig. 3 )

MycoBank No.: MB 818912, GenBank: KY026601 KY026602

Type: — CHINA. Guangxi Province: Guigang City , N 23°18′54.75″, E 109°48′17.78″. Holotype GZUIFR-G80.1 was isolated from the plant root soil by Y. Luo.

Colonies on PDA attaining 53 mm in 14 days at 26 °C, white, sparsely fluffy, dense in center and margin loop, round, margin irregular, with deep fissures; reverse red brown in center and light yellow in margin; hyphae hyaline, smooth, 1.5–3.5 µm; racquet hyphae present, 7.5–15 × 5–7.5 µm. Terminal and lateral conidia mostly on short protrusions or on side branches, smooth-walled, mostly solitary, single-celled, clavate to long-ellipsoidal, 5–10 × 2.5–5 µm (x̅ = 7.5 ± 1.1 × 3.6 ± 0.1, n = 50); with broad basal scars (2.5–5 µm) and sometimes lightly inflated collar-shaped structures between conidiogenous cells and conidia. Intercalary conidia and chlamydospores absent.

Etymology: —clavisporum, referring to the shape of conidia.

Material examined: —The ex-type G80.1 and ex-isotype G80.2 were isolated from the tree root soil in Macao River, Guigang City, Guangxi Province on April, 2014 by Y. Luo. Samples were deposited in the Institute of Fungus Resource, Guizhou University ( GZAC).

Distribution: — Guangxi Province, China.

Figures

FIGURE 3. Colony and conidiogenous structures of Chrysosporium clavisporum (holotype). 1–3. Conidiogenous structures. 4. Conidia. 5–6. Colonies (top and reverse) on PDA. Scale bars 1–4 = 10 µm, 5–6 = 10 mm.