Linkage-map based study of natural selection acting on the hybrid zonesbetween Pinus pumila and P. parviflora

• Project/Area Number: 22370030
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: Chiba University
• Principal Investigator: WATANO Yasuyuki 千葉大学, 大学院・理学研究科, 教授 (70192820)
• Co-Investigator(Renkei-kenkyūsha): TSUMURA Yoshihiko 森林総合研究所, 森林遺伝研究領域, 室長 (20353774) ; KAJITA Tadashi 千葉大学, 大学院・理学研究科, 准教授 (80301117)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000); Fiscal Year 2012: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2011: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2010: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
• Keywords: 系統 / 遺伝子浸透 / 浸透性交雑 / 連鎖地図 / 自然選択 / ハイマツ / キタゴヨウ / 交雑帯 / 連鎖不平衡 / 分子マーカー / 自然淘汰 / グラフィカル・ジェノタイプ

Research Abstract

Genetic structures of three hybrid zones (Mt. Hakkoda, Mt. Zao and Mt. Tanigawa) were analyzed by using 34 marker loci mapped on a linkage-map in order to detect natural selection acting on the hybrid zones. Statistically significant deviations of allele frequencies were detected at4 marker loci consistently across all hybrid zones. It is suggested that natural selection would act on the 4 loci. Additionally, we found that the hybrid population in Mt. Zao showed the least level of linkage disequilibrium, suggesting that genetic fusion between the two parental species is highly developed in Mt. Zao.

Research Products

• [Journal Article] Extensive selfing in an endangered population of Pinus parviflora var (2013)
  • Author(s): Iwasaki T, Sase T, Takeda S, Ohsawa TA, Ozaki K, Tani N, Ikeda H, Suzuki M, Endo R, Tohei K, Watano Y.
  • Journal Title: parviflora (Pinaceae) in the Boso Hills, Japan. Tree Genetics & Genomes Volume: 9 Pages: 693-705
  • Peer Reviewed
• [Journal Article] Extensive selfing in an endangered population of Pinus parviflora var. parviflora (Pinaceae) in the Boso Hills, Japan (2013)
  • Author(s): Iwasaki, Takaya
  • Journal Title: Tree Genetics & Genomes Volume: 9 Issue: 3 Pages: 693-705
  • DOI: 10.1007/s11295-012-0585-5
  • Peer Reviewed
• [Journal Article] Reconstructing Hybrid Speciation Events in the Pteris cretica Group (Pteridaceae) in Japan and Adjacent Regions (2013)
  • Author(s): Jaruwattanaphan, Tassanai
  • Journal Title: Systematic Botany Volume: 38 Issue: 1 Pages: 15-27
  • DOI: 10.1600/036364413x661980
  • Peer Reviewed
• [Presentation] 複数山系のハイマツ・キタゴヨウ交雑帯の遺伝的構造の比較解析 (2012)
  • Author(s): 冨士本和人、綿野泰行
  • Organizer: 日本植物分類学会大阪学院大学
  • Year and Date: 2012-03-23
• [Presentation] 複数山系のハイマツ・キタゴヨウ交雑帯の遺伝的構造の比較解析 (2012)
  • Author(s): 冨士本和人・綿野泰行
  • Organizer: 日本植物分類学会
  • Place of Presentation: 大阪学院大学
  • Year and Date: 2012-03-23
• [Book] ハイマツとキタゴヨウの交雑帯,現在起こっている進化のプロセス (2012)
  • Author(s): 綿野泰行
  • Publisher: 戸部・田村編著日本植物分類学会監修「新しい植物分類学II」講談社
• [Book] 新しい植物分類学II 「ハイマツとキタゴヨウの交雑帯，現在起こっている進化のプロセス」 (2012)
  • Author(s): 綿野 泰行
  • Publisher: 講談社
• [Book] 新しい植物分類学2(KS一般生物学専門書)内の1節"ハイマツとキタゴヨウの交雑帯,現在起こっている進化のプロセス" (2012)
  • Author(s): 綿野泰行
  • Publisher: 講談社(印刷中)