Draft genome sequence data of the osmotolerant yeast Starmerella magnoliae JH110 isolated from a honeycomb

TL;DR

This paper presents the genome sequence of a yeast found in a honeycomb that can produce erythritol, a sweetener used in food.

Contribution

The study provides a high-quality genome assembly and identifies key genes involved in erythritol production in Starmerella magnoliae JH110.

Findings

The genome of S. magnoliae JH110 was sequenced and assembled into four contigs with a GC content of 58.5%.

Genes for GLO1, TKL1, and ER were identified on the same contig, suggesting their role in erythritol biosynthesis.

Phylogenetic analysis confirmed JH110 belongs to a distinct branch of S. magnoliae, separate from other yeasts.

Abstract

Erythritol is a sugar alcohol used as a sweetener in the food industry and is primarily produced through the fermentation of osmotolerant yeasts and fungi. In this study, we analyzed the genome of Starmerella magnoliae JH110 (MDK-2023a), an osmotolerant yeast isolated from a honeycomb and known for producing erythritol. The genome of JH110 was sequenced using the PacBio RS II platform and assembled into four contigs with a total length of 10,358,530 bp and a GC content of 58.5%. Gene prediction was carried out using the MAKER pipeline, and genes for glyoxalase 1 (GLO1), transketolase 1 (TKL1), and erythrose reductase (ER) were identified on the same contig. Phylogenetic analyses based on ITS, BUSCO-derived single-copy core genes, as well as GLO1 and TKL1 genes, confirmed that JH110 clustered with other S. magnoliae strains, forming a distinct branch separate from other yeasts. This dataset provides genomic information on S. magnoliae JH110. It is a valuable resource for comparing the genomes of osmotolerant yeasts, studying sugar alcohol biosynthesis, and exploring potential industrial applications.

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