Schizosaccharomyces versatilis represents a distinct evolutionary lineage of fission yeast

Graham J. Etherington; Elisa Gomez Gil; Wilfried Haerty; Snezhana Oliferenko; Conrad A. Nieduszynski

doi:10.1002/yea.3919

Schizosaccharomyces versatilis represents a distinct evolutionary lineage of fission yeast

Graham J. Etherington^*, Elisa Gomez Gil, Wilfried Haerty, Snezhana Oliferenko, Conrad A. Nieduszynski^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The fission yeast species Schizosaccharomyces japonicus is currently divided into two varieties—S. japonicus var. japonicus and S. japonicus var. versatilis. Here we examine the var. versatilis isolate CBS5679. The CBS5679 genome shows 88% identity to the reference genome of S. japonicus var. japonicus at the coding sequence level, with phylogenetic analyses suggesting that it has split from the S. japonicus lineage 25 million years ago. The CBS5679 genome contains a reciprocal translocation between chromosomes 1 and 2, together with several large inversions. The products of genes linked to the major translocation are associated with ‘metabolism’ and ‘cellular assembly’ ontology terms. We further show that CBS5679 does not generate viable progeny with the reference strain of S. japonicus. Although CBS5679 shares closer similarity to the ‘type’ strain of var. versatilis as compared to S. japonicus, it is not identical to the type strain, suggesting population structure within var. versatilis. We recommend that the taxonomic status of S. japonicus var. versatilis is raised, with it being treated as a separate species, Schizosaccharomyces versatilis.

Original language	English
Pages (from-to)	95-107
Number of pages	13
Journal	Yeast
Volume	41
Issue number	3
DOIs	https://doi.org/10.1002/yea.3919
Publication status	Published - Mar 2024

Keywords

adaptation
evolution
fission yeast
Schizosaccharomyces versatilis
taxonomy

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title = "Schizosaccharomyces versatilis represents a distinct evolutionary lineage of fission yeast",

abstract = "The fission yeast species Schizosaccharomyces japonicus is currently divided into two varieties—S. japonicus var. japonicus and S. japonicus var. versatilis. Here we examine the var. versatilis isolate CBS5679. The CBS5679 genome shows 88% identity to the reference genome of S. japonicus var. japonicus at the coding sequence level, with phylogenetic analyses suggesting that it has split from the S. japonicus lineage 25 million years ago. The CBS5679 genome contains a reciprocal translocation between chromosomes 1 and 2, together with several large inversions. The products of genes linked to the major translocation are associated with {\textquoteleft}metabolism{\textquoteright} and {\textquoteleft}cellular assembly{\textquoteright} ontology terms. We further show that CBS5679 does not generate viable progeny with the reference strain of S. japonicus. Although CBS5679 shares closer similarity to the {\textquoteleft}type{\textquoteright} strain of var. versatilis as compared to S. japonicus, it is not identical to the type strain, suggesting population structure within var. versatilis. We recommend that the taxonomic status of S. japonicus var. versatilis is raised, with it being treated as a separate species, Schizosaccharomyces versatilis.",

keywords = "adaptation, evolution, fission yeast, Schizosaccharomyces versatilis, taxonomy",

author = "Etherington, {Graham J.} and Gil, {Elisa Gomez} and Wilfried Haerty and Snezhana Oliferenko and Nieduszynski, {Conrad A.}",

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year = "2024",

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AU - Etherington, Graham J.

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AU - Haerty, Wilfried

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AU - Nieduszynski, Conrad A.

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AB - The fission yeast species Schizosaccharomyces japonicus is currently divided into two varieties—S. japonicus var. japonicus and S. japonicus var. versatilis. Here we examine the var. versatilis isolate CBS5679. The CBS5679 genome shows 88% identity to the reference genome of S. japonicus var. japonicus at the coding sequence level, with phylogenetic analyses suggesting that it has split from the S. japonicus lineage 25 million years ago. The CBS5679 genome contains a reciprocal translocation between chromosomes 1 and 2, together with several large inversions. The products of genes linked to the major translocation are associated with ‘metabolism’ and ‘cellular assembly’ ontology terms. We further show that CBS5679 does not generate viable progeny with the reference strain of S. japonicus. Although CBS5679 shares closer similarity to the ‘type’ strain of var. versatilis as compared to S. japonicus, it is not identical to the type strain, suggesting population structure within var. versatilis. We recommend that the taxonomic status of S. japonicus var. versatilis is raised, with it being treated as a separate species, Schizosaccharomyces versatilis.

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Schizosaccharomyces versatilis represents a distinct evolutionary lineage of fission yeast

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Keywords

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