Origin of polyploids and evolution of selfing associated with breakdown of distyly in Rubiaceae

• Project/Area Number: 20770073
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Biodiversity/Systematics
• Research Institution: Okayama University (2010-2011); Osaka Museum of Natural History (2008-2009)
• Principal Investigator: NAIKI Akiyo 岡山大学, 大学院・教育学研究科, 講師 (30393200)
• Project Period (FY): 2008 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2011: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 倍数化 / 自殖 / 異型花柱性 / 二型花柱性 / アカネ科 / 自家不和合性

Research Abstract

Distyly in Damnacanthus(Rubiaceae) is associated withpoliploidization, and tetraploids do not show distyly. In this study, it was revealed thatdiploid Damnacanthus species whowed self-and intramorphic-incompatibility and tetraploid species had self-compatibility. Phylogenetic analysis of Damnacanthus suggestedmultiple origins of polyploidization within the genus.

Research Products

• [Journal Article] Heterostyly and the possibility of its breakdown by polyploidization (2012)
  • Author(s): Naiki, A
  • Journal Title: Plant Species Biology Volume: Vol.27 Pages: 3-29
  • Peer Reviewed
• [Journal Article] Heterostyly and the possibility of its breakdown by polyploidization (2012)
  • Author(s): Akiyo Naiki
  • Journal Title: Plant Species Biology Volume: 27 Issue: 1 Pages: 3-29
  • DOI: 10.1111/j.1442-1984.2011.00363.x
  • Peer Reviewed
• [Journal Article] Molecular phylogenetic analyses of Geranium robertianum L.populations recently found in Japan (2012)
  • Author(s): Sachiko Nishida, Hiroshi Azuma, Akiyo Naiki, Makoto Ogawa
  • Journal Title: Acta Phytotaxonomica et Geobotanica Volume: 62(印刷中)
  • Peer Reviewed
• [Journal Article] Population genetic structure, phylogeography, and demographic history of Platycrater arguta (Hydrangeaceae) endemic to East China and South Japan (2009)
  • Author(s): Qiu, Y-X, X-S Qi, X-Y Tao, X-F Jin, A.Naiki , H.P.Comes
  • Journal Title: inferred from chloroplast DNA sequence variation Taxon 58 Pages: 1226-1241
  • Peer Reviewed
• [Journal Article] Population genetic stmcture and phylogeographical pattem of Platycrater arguta (Hydrangeaceae) endemic to East China and South Japan, inferred from chloroplast DNA sequences variation. (2009)
  • Author(s): Qiu, Y-X., X-S Qi, X-Y Tao, X-F Jin, A.Naiki, H.P.Comes.
  • Journal Title: Taxon 58 Pages: 1226-1241
  • Peer Reviewed
• [Journal Article] 大和川水系におけるアリドオシ(アカネ科)の分布と染色体数 (2008)
  • Author(s): 内貴章世
  • Journal Title: Bulletin of the Osaka Museum of Natural History 62 Pages: 75-80
  • NAID: 110007860710
  • Peer Reviewed
• [Presentation] アリドオシ属(アカネ科)における倍数化に伴う自家和合性の進化 (2012)
  • Author(s): 内貴章世, 永益英敏
  • Organizer: 日本植物分類学会第11回大会
  • Place of Presentation: 大阪学院大学(吹田市)
  • Year and Date: 2012-03-24
• [Presentation] アリドオシ属(アカネ科)における倍数化に伴う自家和合性の進化 (2012)
  • Author(s): 内貴章世、永益英敏
  • Organizer: 日本植物分類学会第11回大会
  • Place of Presentation: 大阪学院大学(大阪府吹田市)(招待講演)
  • Year and Date: 2012-03-24
• [Remarks] 岡山大学教育学部附属中学校1年生5クラスにおいて、報告者の研究成果の一部に関して、「植物の花の異型花柱性」というタイトルで、二型花柱性植物の観察、計測、グラフ作成、環境とのかかわりを含めた授業を行った。