Niesslia dimorphospora (W. Gams) W. Gams & Stielow (2019)

Liu, Haifeng, Choi, Hyeongju, Paul, Narayan Chandra, Ariyawansa, Hiran A. & Sang, Hyunkyu, 2025, Discovering fungal communities in roots of Zoysia japonica and characterising novel species and their antifungal activities, IMA Fungus 16, pp. e 138479-e 138479 : e138479-

Niesslia dimorphospora (W. Gams) W. Gams & Stielow (2019) .

Fig. 8

Culture characteristics.

Colony reaching 53.82 mm diam. after 7 days in darkness at 25 ° C on PDA, surface initially floccose, later slimy, white on front and reverse sides (Fig. 8 a ).

Description from living culture CMML 20-40 .

Sexual morph: undetermined. Asexual morph: Sporulation abundant on MEA. Phialides 40–75 μm long, 1.5–2.3 μm wide, thick-walled. Conidia smooth-walled, globose, 4.5–6.5 μm diam., or ellipsoidal, slightly curved, 6.5–10.5 × 2.2–3.8 μm (Fig. 8 b – k ).

Type.

Korea • South Jeolla Province, Hwasun , isolated from roots of Zoysia japonica , October 2020, H. Liu and H. Sang, living cultures CMML 20-40 , CMML 20-41 and CMML 20-42 .

Notes.

Niesslia dimorphospora typically produce dimorphic conidia (globose and ellipsoidal). In multi-loci phylogenetic analysis using gene sequences of ITS, TEF 1, TUB 2 and RPB 2, three strains ( CMML 20-40 , CMML 20-41 and CMML 20-42 ) were clustered into a clade containing ex-type strain of N. dimorphospora ( CBS 785.69 ) and representative strain CBS 361.76 with high statistical support (100 % / 1.00) (Fig. 9 ). This is the first record of N. dimorphospora associated with Z. japonica in Korea.

Figures

Figure 8. Niesslia dimorphospora (CMML 20-40) a front and reverse sides of colony on PDA b – d globose conidia on a conidiophore e – i ellipsoidal conidia on a conidiophore j globose conidia k ellipsoidal conidia. Scale bars: 10 μm.

Figure 9. Maximum Likelihood phylogenetic tree, based on combined sequences of ITS, LSU, RPB 2 and TUB 2 from Niesslia species. Bootstrap values (BS) and Bayesian posterior probabilities (PP) are given at the nodes (BS / PP). Strains obtained from this study are in bold blue. Ex-type isolates are marked with T. Simplicillium lanosoniveum (CBS 322.72) was used as the outgroup taxon.