Wheat polyploidization: the genetic basis of F1 hybrid genome doubling through union of 2n gametes

• Project/Area Number: 15H04439
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Science in genetics and breeding
• Research Institution: Fukui Prefectural University
• Principal Investigator: MATSUOKA Yoshihiro 福井県立大学, 生物資源学部, 准教授 (80264688)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2016: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000); Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 倍数化 / 2n配偶子 / 種間雑種 / 倍数性進化 / 生殖 / 雑種 / 倍数性 / 分離集団

Outline of Final Research Achievements

To better understand the genetic basis of “F1 hybrid genome doubling through union of 2n gametes”, an important early step in the process of plant allopolyploid speciation, a quantitative trait locus (QTL) analysis was done using triploid F1 hybrids that were produced by artificial cross between the diploid and tetraploid progenitors of bread wheat (Triticum aestivum L. subsp. aestivum). As the result, 11 QTLs were found. Comparative observations of the pollen mother cells suggested that at least some of those QTLs might be involved in the process of 2n gamete formation in the triploid F1 hybrids.

Research Products

• [Journal Article] The role of reproductive isolation in allopolyploid speciation patterns: empirical insights from the progenitors of common wheat (2017)
  • Author(s): Matsuoka Yoshihiro、Takumi Shigeo
  • Journal Title: Scientific Reports Volume: 7 Issue: 1 Pages: 16004-16004
  • DOI: 10.1038/s41598-017-15919-z
  • NAID: 120006375921
  • Peer Reviewed / Open Access
• [Journal Article] Salt tolerance during germination and seedling growth of wild wheat Aegilops tauschii and its impact on the species range expansion (2016)
  • Author(s): Saisho Daisuke、Takumi Shigeo、Matsuoka Yoshihiro
  • Journal Title: Scientific Reports Volume: 6 Issue: 1 Pages: 38554-38554
  • DOI: 10.1038/srep38554
  • Peer Reviewed / Open Access
• [Journal Article] Intraspecific lineage divergence and its association with reproductive trait change during species range expansion in central Eurasian wild wheat Aegilops tauschii Coss. (Poaceae) (2015)
  • Author(s): Yoshihiro Matsuoka, Shigeo Takumi, Taihachi Kawahara
  • Journal Title: BMC Evolutionary Biology Volume: 15 Issue: 1
  • DOI: 10.1186/s12862-015-0496-9
  • Peer Reviewed / Open Access / Acknowledgement Compliant