Parajaminaea alba S. Hu, Q. Y. Zhu & F. Y. Bai, 2025

Hu, Shuang, Zhu, Qi-Yang, Zhu, Hai-Yan, Liu, Jun-Yu, Shi, Yue, Qiu, Yan-Jie, Wen, Zhang, Li, Ai-Hua, Han, Pei-Jie & Bai, Feng-Yan, 2025, Yeast diversity in traditional fermented foods of ethnic minorities in China, with the descriptions of four new yeast species, IMA Fungus 16, pp. e 146163-e 146163 : e146163-

publication ID	https://doi.org/10.3897/imafungus.16.146163
DOI	https://doi.org/10.5281/zenodo.15851351
persistent identifier	https://treatment.plazi.org/id/09A5D949-7F40-5ECA-8593-56FBDF7504D4
treatment provided by	by Pensoft
scientific name	Parajaminaea alba S. Hu, Q. Y. Zhu & F. Y. Bai
status	sp. nov.

Treatment

Parajaminaea alba S. Hu, Q. Y. Zhu & F. Y. Bai sp. nov.

Etymology.

al’ba. L. gen. fem. adj. alba , white, referring to the color of colonies.

Type.

CHINA • Xinjiang Uygur Autonomous Region, Ili Kazakh Autonomous Prefecture, Xinyuan County, 43.3928°N, 83.2205°E, from yogurt made by Kazakh nationality, August 2023, S. Hu. The holotype CGMCC 2.7776 View Materials (original number XY 52 Y- 1) has been preserved in a metabolically inactive state in the China General Microbiological Culture Collection Center ( CGMCC), Beijing, China. An extype culture has been deposited in the Japan Collection of Microorganisms ( JCM), Koyadai, Japan, as JCM 36899 View Materials . GenBank accessions: ITS - PQ 373579 and LSU- PP 192736 . The raw genome data of CGMCC 2.7776 View Materials has been deposited in GenBank under the BioSample accession numbers SAMN 47538176 GoogleMaps .

Culture characteristics.

After growth on YM agar for 5 days at 25 ° C, colonies are white, butyrous, and slightly raised, with a smooth, moist surface and entire margins. Cells are ellipsoidal to fusiform, 2–3 × 3–6 µm. Budding is monopolar, and pseudohyphae or true hyphae are not formed (Fig. 7 h View Figure 7 ). After 4 weeks in YM broth at 25 ° C, sediment and pellicle are present. After growth on PDA agar for 2 weeks at 25 ° C, oil droplet-like structures were observed within the cells (Fig. 7 i View Figure 7 ). Sexual structures were not observed.

Physiological characteristics of the new species are listed in Table 2 View Table 2 .

Notes.

The genus Parajaminaea was proposed in 2017 to accommodate P. albizae ( Microstroma albiziae ) and P. phylloscopi ( Jaminaea phylloscopi ) ( Kijpornyongpan and Aime 2017). The authors assigned strain 8 A 1 to this genus as representing a distinct undescribed species, which is formally described here as P. alba together with strain CGMCC 2.7776. Strain 8 A 1 was isolated from the plant, implying different ecological distributions of the new species. P. phylloscopi was isolated from a trans-Saharan migratory bird in Italy and can grow at 44 ° C and at pH 2.5 ( Francesca et al. 2016), and P. albiziae is a foliar pathogen on woody plant species of the genus Albizia ( Kijpornyongpan and Aime 2017) , suggesting ecological diversity of the genus Parajaminaea . P. alba differs from P. phylloscopi phenotypically in the assimilation reactions of trehalose, starch soluble, D-arabinose, ribitol, DL-lactic acid, succinic acid, and sodium nitrite; the ability to grow at 37 ° C; and the Diazonium Blue B reaction (Suppl. material 1: table S 3). It is worth testing whether the abundant droplet-like structures in the cells of P. alba , as shown in Fig. 7 i View Figure 7 , are formed by oil.