# Taxogenomic Analysis of a Novel Yeast Species, Lachancea rosae Sp. Nov. F.A., Isolated From the Wild Rose Rosa californica

## TL;DR

Scientists discovered a new yeast species, Lachancea rosae, from a wild rose in California and used genomic data to link its genes to how it processes carbon and nitrogen.

## Contribution

A new yeast species is described with taxogenomic insights into carbon and nitrogen gene-trait correlations.

## Key findings

- Strain yHQL494 belongs to a new species, Lachancea rosae, within the Lachancea genus.
- Genomic and physiological analyses showed consistent gene-trait correlations across Lachancea species.
- The new species exhibits distinct physiological traits like hyphae formation and carbon/nitrogen assimilation.

## Abstract

A novel Saccharomycotina yeast strain, yHQL494, was isolated from the rose hip of the wild rose Rosa californica from Castle Crags State Park, California, USA. Phylogenetic analyses of both whole genome data and the sequences from the D1/D2 region of the large ribosomal subunit (LSU) rRNA gene placed strain yHQL494 within the genus Lachancea and grouped it into a clade with Lachancea lanzarotensis and Lachancea meyersii. Taxogenomic analyses were conducted on publicly available genome sequences to gain a deeper insight into the carbon and nitrogen gene‐trait associations across the Lachancea clade. The results of these analyses were found to be consistent across Lachancea species. Growth assays and microscopic analyses were conducted to determine the physiological characteristics of strain yHQL494, including the presence of hyphae or pseudohyphae, ascospore formation, fermentation abilities, and assimilation of carbon and nitrogen compounds. Based on the phenotypic and genomic characteristics of the strain yHQL494T (=NRRL Y‐64858T, =CBS 18,574T), we propose a new species, Lachancea rosae sp. nov. f.a.

The discovery, description, and taxogenomic analysis of a novel species of Lachancea revealed correlations between gene content and carbon and nitrogen physiological assays.

The novel species Lachancea rosae is discovered and formally described.Taxogenomic analysis shows how carbon and nitrogen gene presence correlates with traditional physiological assays.

The novel species Lachancea rosae is discovered and formally described.

Taxogenomic analysis shows how carbon and nitrogen gene presence correlates with traditional physiological assays.