Genomic structure and evolution of the mating type locus in the green seaweed Ulva partita

Tomokazu Yamazaki, Kensuke Ichihara, Ryogo Suzuki, Kenshiro Oshima, Shinichi Miyamura, Kazuyoshi Kuwano, Atsushi Toyoda, Yutaka Suzuki, Sumio Sugano, Masahira Hattori, Shigeyuki Kawano

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    The evolution of sex chromosomes and mating loci in organisms with UV systems of sex/mating type determination in haploid phases via genes on UV chromosomes is not well understood. We report the structure of the mating type (MT) locus and its evolutionary history in the green seaweed Ulva partita, which is a multicellular organism with an isomorphic haploid-diploid life cycle and mating type determination in the haploid phase. Comprehensive comparison of a total of 12.0 and 16.6 Gb of genomic next-generation sequencing data for mt- and mt+ strains identified highly rearranged MT loci of 1.0 and 1.5 Mb in size and containing 46 and 67 genes, respectively, including 23 gametologs. Molecular evolutionary analyses suggested that the MT loci diverged over a prolonged period in the individual mating types after their establishment in an ancestor. A gene encoding an RWP-RK domain-containing protein was found in the mt- MT locus but was not an ortholog of the chlorophycean mating type determination gene MID. Taken together, our results suggest that the genomic structure and its evolutionary history in the U. partita MT locus are similar to those on other UV chromosomes and that the MT locus genes are quite different from those of Chlorophyceae.

    Original languageEnglish
    Article number11679
    JournalScientific Reports
    Volume7
    Issue number1
    DOIs
    Publication statusPublished - 2017 Dec 1

    Fingerprint

    Ulva
    macroalgae
    genomics
    loci
    haploidy
    genes
    mating types
    chromosomes
    history
    Chlorophyceae
    organisms
    sex chromosomes
    life cycle (organisms)
    ancestry
    diploidy
    gender

    ASJC Scopus subject areas

    • General

    Cite this

    Yamazaki, T., Ichihara, K., Suzuki, R., Oshima, K., Miyamura, S., Kuwano, K., ... Kawano, S. (2017). Genomic structure and evolution of the mating type locus in the green seaweed Ulva partita. Scientific Reports, 7(1), [11679]. https://doi.org/10.1038/s41598-017-11677-0

    Genomic structure and evolution of the mating type locus in the green seaweed Ulva partita. / Yamazaki, Tomokazu; Ichihara, Kensuke; Suzuki, Ryogo; Oshima, Kenshiro; Miyamura, Shinichi; Kuwano, Kazuyoshi; Toyoda, Atsushi; Suzuki, Yutaka; Sugano, Sumio; Hattori, Masahira; Kawano, Shigeyuki.

    In: Scientific Reports, Vol. 7, No. 1, 11679, 01.12.2017.

    Research output: Contribution to journalArticle

    Yamazaki, T, Ichihara, K, Suzuki, R, Oshima, K, Miyamura, S, Kuwano, K, Toyoda, A, Suzuki, Y, Sugano, S, Hattori, M & Kawano, S 2017, 'Genomic structure and evolution of the mating type locus in the green seaweed Ulva partita' Scientific Reports, vol. 7, no. 1, 11679. https://doi.org/10.1038/s41598-017-11677-0
    Yamazaki T, Ichihara K, Suzuki R, Oshima K, Miyamura S, Kuwano K et al. Genomic structure and evolution of the mating type locus in the green seaweed Ulva partita. Scientific Reports. 2017 Dec 1;7(1). 11679. https://doi.org/10.1038/s41598-017-11677-0
    Yamazaki, Tomokazu ; Ichihara, Kensuke ; Suzuki, Ryogo ; Oshima, Kenshiro ; Miyamura, Shinichi ; Kuwano, Kazuyoshi ; Toyoda, Atsushi ; Suzuki, Yutaka ; Sugano, Sumio ; Hattori, Masahira ; Kawano, Shigeyuki. / Genomic structure and evolution of the mating type locus in the green seaweed Ulva partita. In: Scientific Reports. 2017 ; Vol. 7, No. 1.
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