Sugitazyma polliae C. Y. Chai & F. L. Hui 2026, sp. nov.

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Sugitazyma polliae C. Y. Chai & F. L. Hui sp. nov. Fig. 4 Etymology. The specific epithet polliae refers to Pollia, the plant genus from which the type strain was isolated. Typus. China • Hainan: Wuzhishan City; Wuzhi Mountain; on the phylloplane of Pollia japonica; Aug 2024; S. L. Lv leg., NYNU 24849 (holotype GDMCC 2527 T preserved as a metabolically inactive state, metabolically inactive ex-type culture PYCC 10137, GenBank numbers: ITS- PQ 568990, D 1 / D 2 - PQ 568988). Description. On YM agar after 7 days at 20 ° C, the streak culture cream, mucoid and smooth, with entire margin. After 3 days on YM agar at 20 ° C, single cells ovoid, 5–6 × 6.5–13 μm, polar budding, on denticles or short stalks, with percurrent proliferation. After 1 month at 20 ° C, a pellicle and a sediment are present. In Dalmau plate culture on CMA, pseudohyphae are not formed. Sexual structures are not observed in any of the strains or when strains are paired on PDA, CMA or V 8 agar. On corn meal agar, ballistoconidia are not produced. Glucose fermentation is absent. Glucose, inulin (weak), sucrose (weak), raffinose (weak and delayed), melibiose (weak and delayed), galactose (weak), lactose (weak), trehalose (weak), maltose (weak), melezitose (weak), methyl-α-D-glucoside, cellobiose (weak), salicin (weak), D-xylose (weak), L-arabinose (weak), D-arabinose, 5 - keto-D-gluconate, D-ribose (weak and delayed), ethanol, erythritol (delayed), ribitol (delayed), galactitol (weak and delayed), D-mannitol (weak and delayed), D-glucitol, myo-inositol (weak), DL-lactate (weak), succinate, citrate (delayed), D-gluconate (weak), 2 - keto-D-gluconate (weak), D-glucuronate (weak), and glucono- 1, 5 - lactone are assimilated as sole carbon sources. L-Sorbose, L-rhamnose, methanol, glycerol, D-glucosamine, and N-acetyl-D-glucosamine are not assimilated. Nitrate, nitrite, ethylamine (delayed), and L-lysine are assimilated as sole nitrogen sources. Cadaverine is not assimilated. Maximum growth temperature is 25 ° C. Growth on 50 % (w / w) glucose-yeast extract agar is negative. There is hydrolysis of urea and starch formation. The DBB reaction is positive. Additional strain examined. China • Hainan: Wuzhishan City; Wuzhi Mountain; on the phylloplane of Symplocos adenophylla; Aug 2024; S. L. Lv leg., NYNU 248167; GenBank numbers: ITS- PX 630704, D 1 / D 2 - PX 630706. Note. Physiologically, S. polliae differs from its closely related species, S. pingtangensis, described in this study, by its inability to assimilate L-sorbose and L-rhamnose, as well as its ability to assimilate myo-inositol. S. polliae also differs from S. miyagiana in its inability to assimilate L-rhamnose, its growth capacity at 30 ° C, and its ability to assimilate inulin, galactitol, and D-mannitol (Table 2). Note. + positive reaction; – negative reaction; d, delayed positive; w, weakly positive. All data from this study, except * which were obtained from the original description (Boekhout et al. 2011).

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