4.5 Editorial Material

Virtual issue: phylogeographic studies in the Japanese Archipelago: from geographic patterns of genetic variation to biodiversity in plants

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Article Plant Sciences

Phylogeography of the temperate grassland plant Tephroseris kirilowii (Asteraceae) inferred from multiplexed inter-simple sequence repeat genotyping by sequencing (MIG-seq) data

Tomoka Sakaba et al.

Summary: A group of temperate grassland plant species, known as the Mansen elements, are found in Japan and continental East Asia. Researchers hypothesized that these species are remnants of continental grasslands in Japan from a colder age, but their migration history remained unclear. To investigate the migration history, the phylogeographic analysis of Tephroseris kirilowii, a member of the group, was conducted using single-nucleotide polymorphisms (SNPs). The results showed that the Japanese populations of T. kirilowii diverged from continental East Asia around 25.2 thousand years ago, with the first divergence within Japan occurring around 20.2 thousand years ago. The study suggested a post-glacial expansion of T. kirilowii in Japan based on limited suitable climate during the last glacial maximum and slight genetic differentiation among Japanese populations.

JOURNAL OF PLANT RESEARCH (2023)

Article Plant Sciences

Decades-long phylogeographic issues: complex historical processes and ecological factors on genetic structure of alpine plants in the Japanese Archipelago

Hajime Ikeda

Summary: Mountain regions play an important role in supporting biodiversity, especially in East Asia. The high mountains of the Japanese archipelago harbor alpine and arctic-alpine plant populations, which have persisted through climate changes in the Pleistocene. Phylogeographic studies reveal complex range dynamics of these plants and their genetic relationships with northern regions, indicating possible ecological divergence.

JOURNAL OF PLANT RESEARCH (2022)

Article Plant Sciences

Genetic structure of a widespread alpine shrub Rhododendron aureum (Ericaceae) across East Asia

Maria A. Polezhaeva et al.

Summary: The vast territory of East Asia, including southwestern Beringia, is considered to have been almost ice free during the Pleistocene. The genetic variation and population structure of the alpine shrub Rhododendron aureum across East Asia revealed three main genetic groups: Siberia, Northeast, and North Pacific, suggesting different patterns of divergence and historical relationships.

JOURNAL OF PLANT RESEARCH (2021)

Article Plant Sciences

Phylogeography of the East Asian grassland plant, Viola orientalis (Violaceae), inferred from plastid and nuclear restriction site-associated DNA sequencing data

Haruna Sata et al.

Summary: The study revealed that Viola orientalis originated in northeastern Asia and spread southward through the Korean Peninsula to the Japanese Islands during the last glacial period. This finding supports the previously proposed evolutionary hypothesis regarding the origin and migration routes of the Mansen elements.

JOURNAL OF PLANT RESEARCH (2021)

Article Plant Sciences

Phylogenetic origin of two Japanese Torreya taxa found in two regions with strongly contrasting snow depth

Mineaki Aizawa et al.

Summary: The Japanese archipelago shows a significant difference in snow depth in winter, leading to varied distribution and morphology of plant subspecies, similar to altitudinal differences. This study aimed to reveal the phylogenetic origin of two varieties of Torreya nucifera and found that these two subspecies have different origins, possibly involving hybridization and gene flow.

JOURNAL OF PLANT RESEARCH (2021)

Article Plant Sciences

Chloroplast DNA phylogeography of Pedicularis ser. Gloriosae (Orobanchaceae) in Japan

Noriyuki Fujii

JOURNAL OF PLANT RESEARCH (2007)

Article Plant Sciences

Phylogeography of the genus Cardiandra based on genetic variation in cpDNA sequences

Hiroaki Setoguchi et al.

JOURNAL OF PLANT RESEARCH (2006)

Article Biochemistry & Molecular Biology

Molecular evidence for glacial refugia of mountain plants in the European Alps

P Schönswetter et al.

MOLECULAR ECOLOGY (2005)

Article Multidisciplinary Sciences

Glacial refugia:: Hotspots but not melting pots of genetic diversity

RJ Petit et al.

SCIENCE (2003)

Review Multidisciplinary Sciences

The genetic legacy of the Quaternary ice ages

G Hewitt

NATURE (2000)