EST analysis of the centroheliozoan Raphidiophrys contractilis

2009 Fiscal Year Final Research Report

• Project/Area Number: 20770062
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Biodiversity/Systematics
• Research Institution: University of Tsukuba
• Principal Investigator: SAKAGUCHI Miako University of Tsukuba, 熱帯医学研究所, 助教 (50400651)
• Project Period (FY): 2008 – 2009
• Keywords: 分子系統 / 原生生物 / 太陽虫 / 最尤法 / 分子進化

Research Abstract

Phylogenetic analyses of 127 genes from 72 species indicated that centroheliozoan Raphidiophrys contractilis form a monophyletic clade with Telonema subtilis, cryptomonad, and haptophyte. Furthermore, the analyses also showed that this group is closely related to Stramenopiles, Alveolates, and Rhizaria, and R. contractilis is closely related in the supergroup of chromalveolate.

Research Products

• [Journal Article] Tracing back EFL gene evolution in the cryptomonads-haptophytes assemblage: Separate origins of EFL genes in haptophytes, photosynthetic cryptomonads, and goniomonads. (2009)
  • Author(s): Sakaguchi M, Takishita K, Matsumoto T, Hashimoto T, Inagaki Y
  • Journal Title: Gene 441(1-2) Pages: 126-131
  • Peer Reviewed
• [Journal Article] Gene sampling can bias multi-gene phylogenetic inferences: the relationship between red algae and green plants as a case study. (2009)
  • Author(s): Inagaki Y, Nakajima Y, Sato M, Sakaguchi M, Hashimoto T
  • Journal Title: Mol Biol Evol 26(5) Pages: 1171-1178
  • Peer Reviewed
• [Journal Article] Large-scale phylogenomic analyses reveal that two enigmatic protist lineages, Telonemia and Centroheliozoa, are related to photosynthetic chromalveolates. (2009)
  • Author(s): Burki F, Inagaki Y, Brate J, Archibald JM, Keeling PJ, Cavalier-Smith T, Sakaguchi M, Hashimoto T, Horak A, Kumar S, Klaveness D, Jakobsen K, Pawlowski J, Shalchian-Tabrizi K
  • Journal Title: Genome Biol Evol 1 Pages: 231-238
  • Peer Reviewed
• [Presentation] 遺伝子データ解析によるテロネマ類と有中心粒太陽虫の系統的位置 (2009)
  • Author(s): 稲垣祐司, Fabien Burki, Jon Brate, John Archibald, Patrick Keeling, Thomas Cavalier-Smith, 坂口美亜子, 橋本哲男, Ales Horak Ales Horak, Dag Klaveness, Kjetill Jakobsen, Jan Pawlowski, Kamran Shalchian-Tablizi
  • Organizer: 日本進化原生生物研究会
  • Place of Presentation: 仙台市・宮城教育大学
  • Year and Date: 2009-07-05
• [Presentation] Updating the distribution of elongation factor-like genes in eukaryotes (2008)
  • Author(s): M. Sakaguchi, K. Takishita, T. Matsumoto, T. Hashimoto, Y. Inagaki
  • Organizer: International society for evolutionary protistology
  • Place of Presentation: カナダ・ハリファックス大学
  • Year and Date: 2008-07-23