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Regions believed to be refugia are known to have lineages indigenous to the regions. The Izu Peninsula, where genus Fagusexisted during the last glacial period, was focused on to survey chloroplast DNA of Japanese beech (Fagus crenataBlume) that grew there. DNA sequence analysis of chloroplast genome regions of about 14 kb revealed two new haplotypes, O and E-1, in F. crenatapopulations in the Izu Peninsula and adjacent regions. Both haplotypes were conceivably derived from haplotype E. The result of the genetic analysis in this study in combination with the result of pollen analyses performed in the past clearly showed that refugia for F. crenataexisted in the Izu Peninsula, and that F. crenatanow in growth are lineages indigenous to the region.Regions believed to be refugia are known to have lineages indigenous to the regions. The Izu Peninsula, where genus Fagusexisted during the last glacial period, was focused on to survey chloroplast DNA of Japanese beech (Fagus crenataBlume) that grew there. DNA sequence analysis of chloroplast genome regions of about 14 kb revealed two new haplotypes, O and E-1, in F. crenatapopulations in the Izu Peninsula and adjacent regions. Both haplotypes were conceivably derived from haplotype E. The result of the genetic analysis in this study in combination with the result of pollen analyses performed in the past clearly showed that refugia for F. crenataexisted in the Izu Peninsula, and that F. crenatanow in growth are lineages indigenous to the region.

AbstractRegions believed to be refugia are known to have lineages indigenous to the regions. The Izu Peninsula, where genus Fagusexisted during the last glacial period, was focused on to survey chloroplast DNA of Japanese beech (Fagus crenataBlume) that grew there. DNA sequence analysis of chloroplast genome regions of about 14 kb revealed two new haplotypes, O and E-1, in F. crenatapopulations in the Izu Peninsula and adjacent regions. Both haplotypes were conceivably derived from haplotype E. The result of the genetic analysis in this study in combination with the result of pollen analyses performed in the past clearly showed that refugia for F. crenataexisted in the Izu Peninsula, and that F. crenatanow in growth are lineages indigenous to the region.