Talaromyces adpressus A. J. Chen, J. C. Frisvad & R. A. Samson 2016

Talaromyces adpressus A. J. Chen, J. C. Frisvad & R. A. Samson (2016) Fig. 18 Description. Sexual morph undetermined. Asexual morph Conidiophores arose from aerial hyphae, or roping hyphal aggregations, hyaline, straight, bi-verticillate. Metulae 9.6–15.5 µm × 2.4–3.0 µm. Phialides 3–5, flask-shaped, 8.5–10.8 µm × 2.1–2.6 µm. Conidia globose to subglobose, hyaline, few pale green, 2.2–2.5 µm × 1.6–2.1 µm (x ̄ = 2.3 × 1.9 µm, L / W ratio = 1.20, n = 25). Medium dependent growth in 7 / 14 days at 25 ° C (mm). • CYA 23–25 / 33 – 38; CYAS No growth; MEA 55–58 / 80 – 85; OA 43–46 / 85 – 90; PDA 38–42 / 60 – 65; YESA 43–45 / 62 – 65. Temperature dependent growth in 7 days (mm). • CYA / MEA 20 ° C 28–30 / 30 – 33; 30 ° C 30–33 / 51 – 56; 37 ° C 16–18 / 16 – 19. Culture characteristics. CYA, 25 ° C, 14 days, sulcate, margin entire and white to buff, floccose, sporulation sparse, pale gray to grayish-green, soluble pigments absent, exudates clear droplets; reverse in coffee brown to caramel. MEA, 25 ° C, 14 days, margin slightly irregular and beige, floccose to funiculose, sporulation dense, grayish-green, soluble pigments absent, exudates clear droplets; reverse in light yellowish brown. OA, 25 ° C, 14 days, margin entire and pale gray, floccose to funiculose, sporulation dense, dark green, soluble pigments absent, exudates clear droplets; reverse in buff. PDA, 25 ° C, 14 days, margin irregular and whitish, floccose to funiculose, sporulation dense, olive green, soluble pigments absent, exudates clear droplets; reverse in cream-buff. YESA, 25 ° C, 14 days, margin slightly irregular, floccose, sporulation moderately dense, warm beige, soluble pigments and exudates absent; reverse in light gold to metallic gold. Material examined. TAIWAN • Guanshan Township, Taitung County, 23°02'12.8"N, 121°11'22.0"E, serpentine soil in rice field, 2 nd November 2022, K. W Cheng, living culture NTUPPMCC 22-271. Notes. In the present study, our strain (NTUPPMCC 22-271) clustered within the clade containing ex-type strain, along with other representative strains of T. adpressus with strong statistical support (100 % / 1.00) (Fig. 19). T. adpressus NTUPPMCC 22-271 exhibited similar asexual morph to the ex-type strain of T. adpressus (CBS 140620), with bi-verticillate conidiophores, phialides 3–5, and subglobose conidia (Fig. 18); however, our strain (NTUPPMCC 22-271) did not grow on CYAS (Chen et al. 2016). T. adpressus has been reported from a wide range of substrates including sea sand, indoor air, peanut, Heterodera zeae cysts, Oryza coarctata as endophytic fungi (Chen et al. 2016; Peterson and Jurjevic 2019; Airin et al. 2023; Lee et al. 2023; Mo et al. 2024). However, this study represents the first discovery of T. adpressus in Taiwan.