Apiospora lophatheri S. J. Li & C. M. Tian, MycoKeys 99: 297–317 (2023)

Fig. 6

Description.

Asexual morph: On WA, hyphae of smooth, hyaline, branched, septate, 1–5 µm diam. hyphae (n = 30). Conidiogenous cells subglobose to ampulliform, doliiform, clavate, erect, aggregated in clusters on hyphae, smooth, branched, 3–14 × 1.5–3.5 µm (x = 8.5 × 6 µm, n = 30). Conidia globose to subglobose, occasionally elongated to ellipsoidal, lenticular, with a longitudinal germ slit, brown to dark brown, smooth, 4–6.5 × 3–6 µm (x = 5.5 × 5 µm, n = 30). Sexual morph: Not observed.

Culture characteristics.

Colonies on PDA attaining 5 cm diam. after 4 days at 25 ° C, thick, dense, margin undulate and irregular, diffuse yellow pigment, surface with patches of grey aerial mycelia, and reverse yellow.

Specimens examined.

China • Guizhou Province, Guiyang City, on diseased bamboo branch, 5 June 2022, K. M. Yu, living cultures: GUCC 21.11. and GUCC 21.12 .

Notes.

Ap. lophatheri was isolated from Lophatherum gracile in China (Li et al. 2023). Phylogenetic analyses indicated that the two new isolates (GUCC 21.11 and GUCC 21.12) clustered together with Ap. lophatheri with high support values (ML / BI = 100 / 0.99) (Fig. 1). Morphologically, our collection has similar conidia to Ap. lophatheri (4–6.5 × 3–6 µm (x = 5.5 × 5 µm vs. 5.1–8.9 × 4.6–7.7 µm) (Li et al. 2023). Thus, these isolates were identified as Ap. lophatheri, and bamboo as a new host record.