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2007 Fiscal Year Final Research Report Summary

A study on the intraspecies structure of Scytosiphon lomentaria (Phaeophyceae)

Research Project

Project/Area Number 17570069
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Biodiversity/Systematics
Research InstitutionHokkaido University

Principal Investigator

KOGAME Kazuhiro  Hokkaido University, Faculty of Science, Associate Professor (80215219)

Project Period (FY) 2005 – 2007
Keywordsbrown algae / Scytosiphon lomentaria / intraspecies structure / molecular phylogeny / cryptic species / ITS2 / cox3 / haplotype
Research Abstract

Scytosiphon lomentaria is a common brown alga in the cold and temperate coasts of the world. In Japan, some genetic diversity have been found in the ITS regions of nrDNA and the mitochondrial cox3 gene. The aim of this study is to delimit the cryptic species in this morphological species, using combinations of ITS2 and cox3 haplotypes that are independently inherited, and to conduct crossing experiments in order to evaluate the delimitation of the cryptic species that was suggested by the haplotype analyses. 90 samples from various localities in Japan were examined, and 26 haplotypes were found in ITS2, and 31 haplotypes in cox3. Results of phylogenetic analyses suggested 8 haplotype groups in ITS2 and 11 haplotype groups in cox3. The combinations of the haplotype groups between ITS2 and cox3 suggested the existence of three cryptic species. Crossing experiments were conducted using cultured isolates of 14 females and 11 males. Results of the crossing experiments suggested three breeding groups. The three breeding groups corresponded to the cryptic species that were suggested by the combinations of the haplotype groups. The present study demonstrated that the analyses of combinations of independently inherited haplotypes are useful for delimitation of cryptic species.

  • Research Products

    (14 results)

All 2008 2007 2006 2005

All Journal Article (8 results) (of which Peer Reviewed: 4 results) Presentation (6 results)

  • [Journal Article] Genetic diversity of Scytosiphon lomentaria (Scytosiphonaceae, Phaeophyceae) from the Pacific and Europe, based on the ITS of nrDNA, rbcL and rbc spacer regions2007

    • Author(s)
      Cho, Ga Youn
    • Journal Title

      Phycologia 46

      Pages: 657-665

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Genetic diversity of Scytosiphon lomentaria (Scytosiphonaceae, Phaeophyceae) from the Pacific and Europe, based on the ITS of nrDNA, rbcL and rbc spacer regions.2007

    • Author(s)
      Cho, G.Y., Kogame, K., Kawai, H. and Boo, S.M.
    • Journal Title

      Phycologia, peer-reviewed 46

      Pages: 657-665

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Molecular phylogeny of the family Scytosiphonaceae (Phaeophyceae)2006

    • Author(s)
      Cho, Ga Youn
    • Journal Title

      Algae 21

      Pages: 175-183

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Inheritance of mitochondrial and chloroplast genomes in the isogamous brown alga Scytosiphon lomentaria (Phaeophyceae)2006

    • Author(s)
      Kato, Yusuke
    • Journal Title

      Phycological Research 54

      Pages: 65-71

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Molecular phylogeny of the family Scytosiphonaceae (Phaeophyceae).2006

    • Author(s)
      Cho, G.Y., Kogame, K. and Boo, S.M.
    • Journal Title

      Algae, peer-reviewed 21

      Pages: 175-183

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Inheritance of mitochondrial and chloroplast genomes in the isogamous brown alga Scytosiphon lomentaria (Phaeophyceae).2006

    • Author(s)
      Kato, Y., Kogame, K., Nagasato, C. and Motomura, T.
    • Journal Title

      Phycological Research, peer-reviewed 54

      Pages: 65-71

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Differential life history phase expression in two coexisting species of Scytosiphon (Phaeophyceae) of northern Chile2005

    • Author(s)
      Camus, Carolina
    • Journal Title

      Journal of Phycology 41

      Pages: 931-941

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Differential life history phase expression in two coexisting species of Scytosiphon (Phaeophyceae) of northern Chile.2005

    • Author(s)
      Gamus, C., Meynard, A.P., Faugeron, S., Kogame, K. and Correa, J. A.
    • Journal Title

      Journal of Phycology, peer-reviewed 41

      Pages: 931-941

    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] 北東大西洋における褐藻カヤモノリの分子系統解析2008

    • Author(s)
      小亀 一弘
    • Organizer
      日本藻類学会第32回大会
    • Place of Presentation
      東京海洋大学品川キャンパス
    • Year and Date
      2008-03-23
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Molecular phylogeny Scytosiphon lomentaria (Phaeophyceae) from northeastern Atlantic.2008

    • Author(s)
      Kogame, K., Rindi, F. and Guiry, M.D.
    • Organizer
      The 32^<th> Annual Meeting of of the Japanese Society of Phycology
    • Place of Presentation
      Tokyo University of Marine Science and Technology
    • Year and Date
      2008-03-23
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Molecular variation of Scytosiphon lomentaria (Phaeophyceae) in Japan2007

    • Author(s)
      Kogame, Kazuhiro
    • Organizer
      XIXth International Seaweed Symposium
    • Place of Presentation
      神戸国際会議場
    • Year and Date
      2007-03-28
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Molecular variation of Scytosiphon lomentaria (Phaeophyceae) in Japan2007

    • Author(s)
      Kogame, K., Uwai, S., Kurihara, A. and Masuda, M.
    • Organizer
      XIXth International Seaweed Symposium
    • Place of Presentation
      International Conference Center
    • Year and Date
      2007-03-28
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] 日本産褐藻カヤモノリにおける分子変異の解析2007

    • Author(s)
      小亀 一弘
    • Organizer
      日本藻類学会第31回大会
    • Place of Presentation
      神戸大学理学部
    • Year and Date
      2007-03-24
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Molecular variation of Scytosiphon lomentaria (Phaeophyceae) in Japan2007

    • Author(s)
      Kogame, K., Uwai, S., Kurihara, A. and Masuda, M.
    • Organizer
      The 31^<th> Annual Meeting of the Japanese Society of Phycology
    • Place of Presentation
      Kobe University
    • Year and Date
      2007-03-24
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-02-04  

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