Carlosrosaea glechomae W. L. Gao & F. L. Hui, 2025

Gao, Wan-Li, Chai, Chun-Yue, Niu, Qiu-Hong & Hui, Feng-Li, 2025, Three new species of Carlosrosaea (Trimorphomycetaceae, Tremellales) from China, MycoKeys 119, pp. 123-135 : 123-135

Carlosrosaea glechomae W. L. Gao & F. L. Hui sp. nov.

Fig. 2 C, D

Etymology.

The specific epithet “ glechomae ” refers to Glechoma , the name of the genus of the plant from which the type species was collected.

Type.

China • Henan Prov.: Xixia Co., Funiu Mountain , 32°45'N, 113°30'E, in the phylloplane of Glechoma longituba (Nakai) Kuprian, Oct 2023 , S. Liu & Y. Z. Qiao, NYNU 2311170 (holotype CICC 33632 T, preserved in a metabolically inactive state; culture ex-type PYCC 9998 , preserved in a viable metabolically inactive state; GenBank: PP 049020 , PP 033670 ) .

Description.

On YM agar after 7 days at 20 ° C, the streak culture is white-cream, butyrous, smooth, and glossy, with an entire margin (Fig. 2 C ). After 3 days in YM broth at 20 ° C, cells are cylindrical, 2.6–5.7 × 3.3–15 μm, and single; budding is polar (Fig. 2 D ). After 1 month at 20 ° C, a ring and sediment are present. In Dalmau plate culture on CMA, pseudohyphae and hyphae are not formed. Sexual structures are not observed on PDA, CMA, or V 8 agar. Ballistoconidia are not produced. Glucose fermentation is absent. The following compounds are assimilated as sole carbon sources: glucose, inulin (weak), sucrose, raffinose, melibiose, galactose, lactose (weak), trehalose, maltose (weak), melezitose, methyl-α-D-glucoside (weak), cellobiose, salicin (weak), L-sorbose (delayed), L-rhamnose (weak), D-xylose, L-arabinose (weak), D-arabinose, 5 - keto-D-gluconate, D-ribose, ribitol, galactitol (weak), D-mannitol (weak), D-glucitol, myo-inositol (delayed and weak), succinate, citrate, D-gluconate (weak), D-glucosamine (weak), N-acetyl-D-glucosamine (weak), 2 - keto-D-gluconate (weak), D-glucuronate (weak), and glucono- 1, 5 - lactone. Methanol, ethanol, glycerol, erythritol, and DL-lactate are not assimilated. Nitrate (delayed and weak), nitrite (delayed and weak), and L-lysine are assimilated as sole nitrogen sources. Ethylamine and cadaverine are not assimilated. Maximum growth temperature is 30 ° C. Growth on 50 % (w / w) glucose-yeast extract agar is negative. Growth in vitamin-free medium is positive. Starch-like substances are not produced. Urease activity is positive. Diazonium Blue B reaction is positive.

Additional strain examined.

China • Guizhou Prov.: Pingtang county, Sifangjing village , 25°7'N, 107°2'E, in the phylloplane of Distylium racemosum Sieb. et Zucc , Feb 2023, D. Lu, NYNU 232184 .

Figures

Figure 2. Carlosrosaea camelliae sp. nov. (NYNU 223230 T). A Culture on YM agar at 20 ° C after 7 d; B. Budding cells grown in YM broth at 20 ° C after 3 d. Carlosrosaea glechomae sp. nov. (NYNU 2311170 T); C. Culture on YM agar at 20 ° C after 7 d; D. Budding cells in YM broth at 20 ° C after 3 d. Carlosrosaea wuzhiensis sp. nov. (NYNU 24841 T); E. Culture on YM agar at 20 ° C after 7 d; F. Budding cells grown in YM broth at 20 ° C after 3 d. Scale bars: 10 μm.