Ultrastructure, diversity and evolution of cell division in the chlorarachniophytes

2011 Fiscal Year Final Research Report

• Project/Area Number: 21570090
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: University of Tsukuba
• Principal Investigator: ISHIDA Ken-ichiro 筑波大学, 生命環境系, 教授 (30282198)
• Project Period (FY): 2009 – 2011
• Keywords: クロララクニオン藻 / 二次共 カ / 細胞分裂 / 進化 / 藻類 / 原生生物

Research Abstract

Cell division manner of three chlorarachniophyte species that are phylogenetically distant each other was studied using a time-lapse video microscope, a fluorescent misrocope and a transmission electron microscope. It has been revealed that a big diversity is present in the basic processes of cell division manner among species of chlorarachniophytes. This research contributes to providing a good amount of basic knowledge on the cell division manner of chlorarachniophytes, which evolved by a secondary endosymbiosis.

Research Products

• [Journal Article] Gymnochlora dimorpha sp. nov., a new chlorarachniophyte that has a unique behaviour of daughter cells. (2011)
  • Author(s): Ota S., Kudo A., Ishida K
  • Journal Title: Phycologia Volume: 50 Pages: 317-326
  • Peer Reviewed
• [Journal Article] Amorphochlora amoebiformis gen. et comb. nov. (Chlorarachniophyceae) (2011)
  • Author(s): Ishida K., Yabuki A. and Ota S
  • Journal Title: Phycological Research Volume: 59 Pages: 52-53
  • Peer Reviewed
• [Journal Article] Internal plastid-targeting signal found in a RubisCO small subunit protein of a chlorarachniophyte alga (2010)
  • Author(s): Hirakawa Y. and Ishida K
  • Journal Title: The Plant Journal Volume: 64 Pages: 402-410
  • Peer Reviewed
• [Journal Article] Characterization of perip lastidal compartment targeting signals in chl orarachniophytes (2010)
  • Author(s): Hirakawa Y. Gile G. H., Ota S., Keeling P. J. and Ishida K
  • Journal Title: Molecular Biology and Evolution Volume: 27 Pages: 1538-1545
  • Peer Reviewed
• [Journal Article] Lotharella oceanica sp. nov (2009)
  • Author(s): Ota S., Silver T.D., Archibald J. M. and Ishida K
  • Journal Title: a new planktonic chlorarachniophyte studied by light and electron microscopy. Phycologia Volume: 48 Pages: 315-323
  • Peer Reviewed
• [Journal Article] Protein targeting into secondary plastids of chlorarachniophytes (2009)
  • Author(s): Hirakawa Y., Nagamune K. and Ishida K
  • Journal Title: Proceedings of National Academy of Science USA Volume: 106 Pages: 2820-12825
  • Peer Reviewed
• [Presentation] How does Paulinella chromatophora (Euglyphida, Cercozoa) build a daughter's shell? (2011)
  • Author(s): Nomura M., Nakayama T. and Ishida K
  • Organizer: Joint Meeting of the Phycological Society of America, International Society of Protistologists and Northwest Algal Symposium Memorial Symposium. The University of Washington
  • Place of Presentation: Seattle, Washington, USA
  • Year and Date: 20110712-16
• [Presentation] Taxonomic study on a new naked thaumatomonad (Phylum Cercozoa). Joint Meeting of the Phycological Society of America (2011)
  • Author(s): Shiratori T., Yabuki A. and Ishida K
  • Organizer: International Society of Protistologists and Northwest Algal Symposium Memorial Symposium. The University of Washington
  • Place of Presentation: Seattle, Washington, USA
  • Year and Date: 20110712-16
• [Presentation] クロララクニオン藻Bigelowiella natansにおける細胞分裂過程の解明に向けた同調培養系の確立 (2011)
  • Author(s): 藤田咲也, 石田健一郎
  • Organizer: 日本藻類学会第35回大会
  • Place of Presentation: 富山大学, 富山
  • Year and Date: 2011-03-27
• [Presentation] 二次共生における共生者核の運命 (2010)
  • Author(s): 石田健一郎
  • Organizer: 染色体学会第61回年会シンポジウム2「藻類ゲノムの最前線」
  • Place of Presentation: 東邦大学習志野キャンパス・千葉
  • Year and Date: 2010-11-05
• [Presentation] 多核ステージを含むクロララクニオン藻P314株の生活環 (2010)
  • Author(s): 工藤敦子, 石田健一郎
  • Organizer: 日本植物学会第74回大会
  • Place of Presentation: 中部大学、春日井・愛知
  • Year and Date: 2010-09-11
• [Presentation] クロララクニオン藻P314株における巨大多核細胞の分裂過程の解明 (2010)
  • Author(s): 工藤敦子, 石田健一郎
  • Organizer: 日本藻類学会第34回大会
  • Place of Presentation: 筑波大学
  • Year and Date: 2010-03-20
• [Presentation] クロララクニオン藻Partenskyella glossopodiaにおける細胞分裂過程の形態学的観察 (2009)
  • Author(s): 遠藤寛子, 大田修平, 長里千香子, 本村泰三, 石田健一郎
  • Organizer: 日本植物学会第73回大会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 20090918-20
• [Presentation] Ultrasturactural observation on the nuclear division of a chlorarachniophyte alga (2009)
  • Author(s): Endo H., Ota S., Nagasato C., Motomura T. and Ishida K
  • Organizer: Partenskyella glossopodia. 9th International Phycological Congress
  • Place of Presentation: Tokyo
  • Year and Date: 20090802-08
• [Presentation] Endosymbiotic Plastid Acquisitions in Photosynthetic Rhizarians (2009)
  • Author(s): Ishida K
  • Organizer: Radiolarian Biology based on Paleoceanography Workshop-RABOPAWOR-
  • Place of Presentation: Kyushu University
  • Year and Date: 2009-11-13