Population genomics of mating system evolution in Closterium pslc

• Project/Area Number: 15K18583
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Evolutionary biology
• Research Institution: Chiba University
• Principal Investigator: Tsuchimatsu Takashi 千葉大学, 大学院理学研究科, 准教授 (60740107)
• Research Collaborator: TSUCHIKANE Yuki ; SEKIMOTO Hiroyuki ; NISHIYAMA Tomoaki
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
• Keywords: 自家交配 / リシークエンス解析 / 生殖様式 / 集団ゲノミクス / 自殖 / 生殖システム / 有性生殖

Outline of Final Research Achievements

The evolution of self-fertilization from outcrossing is the prevalent events in plants, animals and fungus. Here we studied the genomic causes and consequences of self-fertilization through a re-sequencing analysis of the green algae, Closterium pslc, in which self-fertilizing (homothallic) strains evolved from outcrossing (heterothallic) strains multiple times repeatedly. We found, for example, that genomes of homothallic strains tend to be smaller, while segmental duplications seem prevalent in heterothallic genomes. Sex-specific genes found in heterothallic strains were also identified in the genomes of independently evolved homothallic strains.

Research Products

• [Int'l Joint Research] CNRS/University Lille 1(フランス)
• [Int'l Joint Research] Gregor Mendel Institute(オーストリア)
• [Int'l Joint Research] University of Zurich(スイス)
• [Int'l Joint Research] Max Planck Institute(ドイツ)
• [Journal Article] Patterns of polymorphism at the self-incompatibility locus in 1,083 Arabidopsis thaliana genomes. (2017)
  • Author(s): Tsuchimatsu, T., Goubet, P.M., Gallina, S., Holl, A.C., Fobis-Loisy, I., Berges, H., Marande, W., Prat, E., Meng, D., Long, Q., Platzer, A., Nordborg, M., Vekemans, X., Castric, V.
  • Journal Title: Molecular Biology and Evolution Volume: 印刷中 Issue: 8 Pages: 1878-1889
  • DOI: 10.1093/molbev/msx122
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Genome sequencing reveals the origin of the allotetraploid Arabidopsis suecica. (2017)
  • Author(s): Novikova, P.Y., Tsuchimatsu, T., Simon, S., Nizhynska, V., Voronin, V., Burns, R., Fedorenko, O.M., Holm, S., Sall, T., Prat, E., Marande, W., Castric, V. and Nordborg, M.
  • Journal Title: Molecular Biology and Evolution Volume: 34 Pages: 957-968
  • DOI: 10.1093/molbev/msw299
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] African genomes illuminate the early history and transition to selfing in Arabidopsis thaliana (2017)
  • Author(s): Arun Durvasula, Andrea Fulgione, Rafal Gutaker, Selen Alacakaptan, Paadraic Flood, Celia Neto, Takashi Tsuchimatsu, Hernan Burbano, F. Pico, Carlos Alonso-Blanco, Angela M Hancock
  • Journal Title: Proceedings of the National Academy of Sciences Volume: 印刷中
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Sequencing of the genus Arabidopsis identifies a complex history of nonbifurcating speciation and abundant trans-specific polymorphism (2016)
  • Author(s): Novikova PY, Hohmann N, Nizhynska V, Tsuchimatsu T, Ali J, Muir G, Guggisberg A, Paape T, Schmid K, Fedorenko OM, Holm S, Sll T, Schltterer C, Marhold K, Widmer A, Sese J, Shimizu KK, Weigel D, Krmer U, Koch MA, Nordborg M
  • Journal Title: Nature Genetics Volume: 48 Issue: 9 Pages: 1077-1082
  • DOI: 10.1038/ng.3617
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Evolution of Selfing: Recurrent Patterns in Molecular Adaptation (2015)
  • Author(s): Kentaro K. Shimizu & Takashi Tsuchimatsu
  • Journal Title: Annual Review of Ecology, Evolution, and Systematics Volume: 45 Issue: 1 Pages: 493-622
  • DOI: 10.1146/annurev-ecolsys-112414-054249
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] ゲノムワイド関連解析から探るシロイヌナズナにおける花粉数の進化 (2016)
  • Author(s): 土松隆志，角井宏行，山崎美紗子，Cindy Marona，筒井大貴，Afif Hedhly，Dazhe Meng，佐藤豊，Thomas Stadler，Ueli Grossniklaus，金岡雅浩，Michael Lenhard，Magnus Nordborg，清水健太郎
  • Organizer: 日本遺伝学会 企画シンポジウム『フィールドの遺伝学』
  • Place of Presentation: 日本大学（静岡県三島市）
  • Invited
• [Remarks] Tsuchimatsu Lab
  • URL: https://tsuchimatsu.wordpress.com/
• [Remarks] Plant Evolutionary Genomics, Chiba University
  • URL: https://tsuchimatsu.wordpress.com/