Biconidium sinense H. Y. Wang & Y. F. Han, 2025

Biconidium sinense H. Y. Wang & Y. F. Han sp. nov.

Fig. 2 View Figure 2

Etymology.

Referring to China where the species was isolated.

Type.

China • Zhejiang Province, Hangzhou City , sewage treatment plant (30°10'53"N, 120°10'2"E), soil, August 2021, Yulian Ren, ex-type culture GZUIFR 24.013 , dried holotype GZAC 24.013 About GZAC . ITS sequences, GenBank PQ 595985 ; LSU sequences, GenBank PQ 595988 GoogleMaps .

Description.

Culture characteristics (7 days of incubation at 25 ° C): Colony on PDA, 20–30 mm diam., fleshy, plicated, beige ( RAL 1001) at the center, villiform, traffic white ( RAL 9016) at the edge, reverse, light lvory ( RAL 1015) at the center, cream ( RAL 9001) at the edge, nearly round, margin partial; Colony on MEA, 25–30 mm diam., flocculence, traffic white ( RAL 9016), reverse, broom yellow ( RAL 1032), margin entire, round. Colony on OA, 30–35 mm diam., thin, short villous, signal white ( RAL 9003), reverse, cream ( RAL 9001), margin entire, round.

On PDA, Mycelium hyaline, septate, smooth, thin-walled 1.2–2.7 μm wide. Conidiophores hyaline, septate, smooth, solitary, straight, (sub-) erect, arising directly from hyphae, branched or unbranched, bearing 1–5 levels with 1–6 phialides, 1–3 septate at base or middle, 20–52 μm long, 1.5–2.7 μm wide at base. Phialides lateral or terminal, from the conidiophores or directly from the mycelia, awl-shaped, hyaline, smooth-walled, 9.5–35 μm long, 1–2.3 μm wide at base, with globose to cylindriform thickening at conidiogenous loci. polyphialides not observed. Conidia podiform, 1 - septate, 2.5–6.0 × 1.0–3.0 μm (mean ± SD = 3.5 ± 1.0 × 2.0 ± 0.5 μm, n = 30), center-empty, unsymmetrically at both ends, apex angular, base subobtuse, hyaline, thick-, smooth-walled, arranged in slimy heads. Chlamydospores and sexual morph not observed.

Additional specimens examined.

China • Zhejiang Province, Hangzhou City , sewage treatment plant (30°10'53"N, 120°10'2"E), soil, August 2021, living cultures GZUIFR 24.014 (ITS sequences, GenBank PQ 595986 ; LSU sequences, GenBank PQ 595989 ), GZUIFR 24.015 (ITS sequences, GenBank PQ 595987 ; LSU sequences, GenBank PQ 595990 ) GoogleMaps .

Notes.

Phylogenetically, our three strains ( GZUIFR 24.013 , GZUIFR 24.014 and GZUIFR 24.015 ) can apparently separate with other species in Bionectriaceae , and clustered in a single clade with a high support value (BI pp = posterior probability 1, ML BS 100) (Fig. 1 View Figure 1 ). Biconidium sinense is distinguished from other species of Bionectriaceae by conidiogenous cells with globose to cylindriform thickening at conidiogenous loci, and podiform conidia arranged in slimy heads in the morphological characteristics.