How to occur genomic rearrangements in Lysimachia mauritiana showing wide-rainging intraspecific karyotype polymorphism

2014 Fiscal Year Final Research Report

• Project/Area Number: 24570111
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: University of Kochi
• Principal Investigator: OGINUMA Kazuo 高知県立大学, 地域教育研究センター, 教授 (30106794)
• Co-Investigator(Kenkyū-buntansha): HOSHI Yoshikazu 東海大学, 農学部, 教授 (70332088)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 染色体再編・維持 / 染色体動態 / 種内染色体多型 / 種分化

Outline of Final Research Achievements

Concerning to the intraspecific chromosomal polymorphism of Lysimachia mauritiana, 1) the distribution patterns of individuals, and the origin of species native to Taiwan; 2) the distribution patterns and their dynamics of individuals native to Takara Island of the Tokara group and several islands of the Amami group in the Ryukyu Archipelago, were investigated. 3) The origin of the chromosomal polymorphism of this species distributed in the Ryukyu Archipelago, was analyzed by FISH using probes 5S, 45S rDNAs and telomere DNA.
The results foregoing 1) and 2) were respectively published in 2012 and 2015. The origin of chromosomal polymorphism of this species is suggested to be 2n=18 (6m) distributed in Sakishima group of the Ryukyu Archipelago.

Free Research Field

植物細胞分類学