Talaromyces xishaensis X.C. Wang, L. Wang & W.Y. Zhuang, 2016

Wang, Xin-Cun, Chen, Kai, Xia, Ye-Wei, Wang, Long, Li, Tai-Hui & Zhuang, Wen-Ying, 2016, A new species of Talaromyces (Trichocomaceae) from the Xisha Islands, Hainan, China, Phytotaxa 267 (3), pp. 187-200 : 193-195

Talaromyces xishaensis X.C. Wang, L. Wang & W.Y. Zhuang , sp. nov.

Fig. 1

MycoBank MB 815751

Etymology. The specific epithet refers to where the type strain was isolated.

Diagnosis. Colony slow-growing on CYA at 37°C, conidiophores biverticillate, conidia subglobose to ellipsoidal with walls finely roughened.

DNA barcodes. ITS KU644580, BenA KU 644581, CaM KU644582.

Colony diam in mm, 7 d: CYA 13–15; CYA 37 °C 2.5–4; CYA 5 °C no growth; MEA 28–30; YES 24–26; CZ 19–20.

On CYA 25 °C, 7 d: Colonies nearly circular, protuberant in centers; centers purplish brown, 3–4 mm; margins entire; mycelium pale; texture velutinous; sporulation sparse; conidia en masse greyish green; soluble pigments absent; exudates absent; reverse buff in centers but yellowish white at periphery. On MEA 25 °C, 7 d: Colonies nearly circular, plain; centers dark green; margins entire; mycelium white and yellow; texture floccose; sporulation dense; conidia en masse yellowish green; soluble pigments absent; exudates absent; reverse orange in centers but white at periphery. On YES 25 °C, 7 d: Colonies nearly circular, protuberant in centers; centers grey, 4–5.5 mm; margins entire; mycelium white; texture floccose; sporulation dense; conidia en masse bluish green; soluble pigments absent; exudates absent; reverse orange in centers but yellowish brown to white at periphery. On CZ 25 °C, 7 d: Colonies nearly circular, protuberant in centers; margins wide, 2–3 mm; mycelium pale and light yellow; sporulation moderately dense; conidia en masse green to yellowish green; soluble pigments absent; exudates absent; reverse green in centers but white at periphery. Conidiophores biverticillate; stipes smooth walled, 150–275 × 3–4 μ m; metulae 4–8, divergent, 9–12 × 3–3.5 μ m; phialides acerose, tapering into very thin neck, 3–5 per metula, 10.5–12 × 2.5–3 μ m; conidia subglobose to ellipsoidal, smooth to finely roughened, 2.5–3.5 (–5) × 2.5–3 (–4) μ m.

Holotype. CHINA. Hainan: Sansha City, Xisha Islands, Yongxing Island , 16°50 ′ 41 ″ N 112°20 ′ 50 ″ E, soil sample,

29 March 2015, Ye-Wei Xia, culture, Kai Chen ZC95, HMAS 248732, ex-type strain CGMCC 3.17995.

Figures

FIGURE 1. Colonial and microscopic morphology of Talaromyces xishaensis (HMAS 248732).A: Colonies (top row left to right, obverse CYA, MEA, YES and CZ; bottom row left to right, reverse CYA, MEA, YES and CZ); B–D: Conidiophores; E: Conidia. Bars: E 10 μm, applies to B–D.