Geographical and ecological study of wild rice diverged genomes

• Project/Area Number: 25304021
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Science in genetics and breeding
• Research Institution: Hirosaki University
• Principal Investigator: ISHIKAWA RYUJI 弘前大学, 農学生命科学部, 教授 (90202978)
• Co-Investigator(Kenkyū-buntansha): SATO Yo-Ichiro 大学共同利用機関法人 人間文化研究機構, 理事 (20145113) ; NAKAMURA Ikuo 千葉大学, 大学院園芸学研究科, 教授 (50207867) ; ICHITANI Katsuyuki 鹿児島大学, 農学部, 准教授 (10305162)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000); Fiscal Year 2015: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000); Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2013: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
• Keywords: 野生イネの多様性 / オーストラリア / 種分化 / 進化 / 生態分化 / イネ系統分化 / 種間交雑 / ゲノム分化 / 遺伝資源 / 野生イネ / 適応戦略 / 新種 / 生殖隔離 / 生態調査

Outline of Final Research Achievements

Wild rice is regarded as valuable resources to improve cultivated rice. We identified that Asian species maintains high polymorphism. However, American species also maintains high diversity in maternal lineages. It is due to its evolutionary process. In Thai, even one population keeps enough diversity as Asian core collection. In contrast, Vietnamese wild rice did not show high polymorphism but unique high male sterility due to its mitochondrial genome. Australian populations are composed from distinct species. One of the species could be novel type, reflected by genome sequence and also morphological characteristics.

Research Products

• [Int'l Joint Research] QAFFI, Queensland University(Australia)
• [Int'l Joint Research] IAS/CLRRI(ベトナム)
• [Int'l Joint Research] Rice Department/Kasetsart University(Thailand)
• [Journal Article] Inconsistent diversities between nuclear and plastid genomes of AA genome species in the genus <i>Oryza</i> (2015)
  • Author(s): Hao Y., M. Akimoto, R. Kaewcheenchai, M. Sotowa, T. Ishii, R. Ishikawa.
  • Journal Title: Genes & Genetic Systems Volume: 90 Issue: 5 Pages: 269-281
  • DOI: 10.1266/ggs.14-00063
  • NAID: 130005138539
  • ISSN: 1341-7568, 1880-5779
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Chloroplast Genome of Novel Rice Germplasm Identified in Northern Australia. (2014)
  • Author(s): Marta Brozynska & Ernnie Syafika Omar &Agnelo Furtado & Darren Crayn & Bryan Simon & Ryuji Ishikawa & Robert James Henry
  • Journal Title: Tropical Plant Biol. Volume: 7 Pages: 111-120
  • Peer Reviewed / Open Access
• [Journal Article] Molecular relationships between Australian annual wild rice, Oryza meridionalis, and two related perennial forms (2013)
  • Author(s): Sotowa,M.,Ootsuka,K.,Kobayashi,Y.,Hao,Y.,Tanaka,K.Ichitani,K.,Flowers,J.,Purugganan,M.,Nakamura,I.,Sato,Y.,Sato,T.,Crayn,D.,Simon,B.,Waters,D.,Henry,R. and Ishikawa,R.
  • Journal Title: Rice Volume: 6(26) Issue: 1 Pages: 1-18
  • DOI: 10.1186/1939-8433-6-26
  • Peer Reviewed
• [Presentation] Endemic Oryza species in Australia as breeding resources to improve grain size (2015)
  • Author(s): Tamura, N., R. Henry, and R. Ishikawa
  • Organizer: Tropical Agriculture conference
  • Place of Presentation: オーストラリア
  • Year and Date: 2015-11-16
  • Int'l Joint Research
• [Presentation] 日本人が受容したイネ. (2015)
  • Author(s): 石川隆二
  • Organizer: 日本育種学会市民公開シンポジウ
  • Place of Presentation: 新潟大学
  • Year and Date: 2015-09-13
  • Invited
• [Presentation] オーストラリア多年生野生イネの冠水ストレス適応戦略 (2014)
  • Author(s): 外和 昌大，一谷 勝之，石川 隆二.
  • Organizer: 第125回日本育種学会
  • Place of Presentation: 東北大学
• [Presentation] 野生イネの多様性評価に関する研究 ４．オーストラリア野生イネの生活史特性：新奇な多年生戦略と従来型の同所性 (2013)
  • Author(s): 外和 昌大・一谷 勝之・R. Henry・S. Bryan・石川 隆二
  • Organizer: 第124回日本育種学会
  • Place of Presentation: 鹿児島大学
• [Presentation] 野生イネの多様性評価に関する研究 3．異なる集団構造を有する自生地保全区における遺伝的多様性. (2013)
  • Author(s): 石川 隆二・結城穂奈美・S. Chotechuen・ U. Promnart, 芦川育夫
  • Organizer: 第124回日本育種学会
  • Place of Presentation: 鹿児島大学
• [Book] Cereal Genomics: Methods and Protocols, Methods in Molecular Biology (2014)
  • Author(s): Mutou, C., K. Tanaka, R. Ishikawa
  • Publisher: Springer Science+Business Media, New York．
• [Book] フィールド科学の入り口 イネの歴史を探る (2013)
  • Author(s): 国境を越えてイネをめぐるフィールド研究
  • Total Pages: 50
  • Publisher: 玉川大学出版
• [Remarks] イネと遺伝学
  • URL: http://nature.cc.hirosaki-u.ac.jp/lab/1/plantbrd/genetics.html
• [Remarks] イネの遺伝学
  • URL: http://nature.cc.hirosaki-u.ac.jp/lab/1/plantbrd/genetics.html