Absidia zonata T.K. Zong & X.Y. Liu, sp. nov.2021
Fungal names: FN570835
Holotype: China. Beijing (39◦ 570 5800N, 116◦ 110 4300E), from soil sample, 31 December 2019, Liu Xiaoyong (HMAS 249883, living culture CGMCC 3.16033. GenBank: ITS = MW671541, LSU = MW671548. NMDC: ITS = NMDCN0000JBB, LSU = NMDCN0000JB4).
Morphological description
Asexual morph :Colonies on MEA, regularly concentric ring zonate, attaining 69-mm diameter after 8 days at 27◦C, white at first and then smoke gray (R46). Hyphae hyaline at first, becoming brown when mature, 5.0- to 10.5-µm diameter. Stolons branched, smooth, with few septa near the base of sporangiophores, 4.0- to 8.0-µm diameter. Rhizoids root-like or tentaculiform, simple or 2–3 branched, with a septum at the base. Sporangiophores erect or slightly bent, 1–5(–8) in whorls, unbranched, sometimes simple, rarely monopodial, hyaline, with a septum 16.0–26.5 µm below apophyses (44.0–)55.0– 180.0(–280.0) × 2.5–5.5(–6.0) µm. Apophyses distinct, slightly pigmented, 3.0–8.0(–8.5) µm high, 3.0–5.5(–6.5) µm wide at the base, and 7.5–16.5(–17.5) µm wide at the top. Sporangia globose to pyriform, multispored, deliquescent-walled, 14.0–27.0 × 12.5– 26.5 µm. Columellae hemispherical, hyaline, smooth, generally presenting a single spinous projection, up to 2.0–3.5 µm in length, 9.5–19.0 × (6.0–)7.5–14.5(–16.5) µm. Collars present or absent, distinct if present. Sporangiospores mostly cylindrical, sometimes oval, hyaline, smooth, 3.5–4.5(–6.0) × 2.0–3.0(– 3.5) µm. Chlamydospores absent. Zygospores not observed.
Media and temperatures: Colonies on SMA, rough around the edges, concentric ring-shaped, attaining 69-mm diameter after 8 days at 27◦C, white. Colonies on PDA, regularly wavy zonate, attaining 72-mm diameter after 7 days at 27◦C, white at first and then lime green (R31). No growth at 38◦C.
Habitat:
Distribution: China
GenBank: ITS = MW671541, LSU = MW671548. NMDC: ITS = NMDCN0000JBB, LSU = NMDCN0000JB4
Preference:Tongkai, Z. , Zhao, H. , Liu, X. L. , Ren, L. Y. , & Liu, X. Y. . (2021). Taxonomy and phylogeny of four new species in absidia (cunninghamellaceae, mucorales) from china. Frontiers in Microbiology, 12.
Morphologies of Absidia zonata CGMCC 3.16033. (A) Sporangium; (B,C) columellae; (D) sporangiospores; (E) rhizoids; (F) verticillately branched sporangiophores. Scale bars: (A–C,E) 20 µm; (D) 5 µm; (F) 50 µm.
Colonies of Absidia zonata CGMCC 3.16033 at 27◦C after 8 days on MEA (A) obverse, (B) reverse; on SMA (C) obverse, (D) reverse; after 7 days on PDA (E) obverse, and (F) reverse
