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  1. Home
  3. Plastome Phylogenomics Of The Korean Endemic Plant Arisaema Thunbergii Subsp. Geomundoense (araceae).
  1. Home
  3. Plastome Phylogenomics Of The Korean Endemic Plant Arisaema Thunbergii Subsp. Geomundoense (araceae).

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Plastome phylogenomics of the Korean endemic plant Arisaema thunbergii subsp. geomundoense (Araceae).

Joonhyung Jung1,2, Suvin Seok3, Hye One Kim4

  • 1Division of Botany, Honam National Institute of Biological Resources, 99 Gohadoan-gil, Mokpo-si, Jeollanam-do, Republic of Korea. joonhyung0104@gmail.com.

Scientific Reports
|October 15, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Molecular analysis confirms the Korean endemic plant Arisaema thunbergii subsp. geomundoense is a synonym of Arisaema thunbergii subsp. thunbergii. This study refines the evolutionary timeline of Arisaema, revealing its origin in the Oligocene.

Keywords:
Arisaema thunbergii subsp. geomundoenseDivergence timesKorean endemic plantPhylogenetic analysesPlastid genome (plastome)Taxonomic treatment

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Area of Science:

  • Botany and Plant Taxonomy
  • Molecular Evolution
  • Biodiversity Studies

Background:

  • Morphological classification of endemic plants can be subjective, necessitating molecular approaches for accuracy.
  • The taxonomic status of Arisaema thunbergii subsp. geomundoense has been uncertain due to limited molecular data.
  • Recent classifications have questioned its distinctness, proposing synonymy with other subspecies.

Purpose of the Study:

  • To resolve the evolutionary relationships and taxonomic placement of Arisaema thunbergii subsp. geomundoense.
  • To investigate the phylogenetic position of A. thunbergii subsp. geomundoense within the Arisaema genus.
  • To establish a refined evolutionary timeline for the Arisaema genus.

Main Methods:

  • Sequencing and analysis of complete plastid genomes from key Arisaema species.
  • Phylogenetic reconstruction utilizing 78 protein-coding genes (PCGs) from plastomes.
  • Molecular clock estimations calibrated with established points to determine divergence times.

    • Main Results:

    • Complete plastome sequences of A. thunbergii subsp. geomundoense, A. thunbergii subsp. thunbergii, and A. heterophyllum were obtained.
    • Phylogenetic analysis robustly placed A. thunbergii subsp. geomundoense within A. thunbergii subsp. thunbergii, supporting its synonymy.
    • Molecular clock analysis indicated the origin of Arisaema in the Oligocene with Miocene radiation.

    Conclusions:

    • Arisaema thunbergii subsp. geomundoense should be treated as a synonym of Arisaema thunbergii subsp. thunbergii based on molecular evidence.
    • The study provides a refined evolutionary timeline for the Arisaema genus, emphasizing Miocene divergence and adaptation.
    • Plastome data is crucial for accurate plant classification and understanding evolutionary history.