Chloroplast DNA assessment of anagenetic speciation in Rubus takesimensis (Rosaceae) on Ulleung Island, Korea

Woong Lee, Ji Young Yang, Keum Sun Jung, Jae Hong Pak, Masayuki Maki, Seung Chul Kim

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Two major modes of speciation, i.e., cladogenesis and anagenesis, have often been used to explain the generation of distinct plant diversity on oceanic islands. Anagenetic speciation is of particular interest to plant endemics on Ulleung Island, Korea because, of nearly 40 endemics, approximately 88% or even all endemic species are thought to be anagenetically derived. Despite its important role in Ulleung Island, the full scope of the anagenetic speciation and the genetic consequences of this speciation mode have been limited to a very few families (i.e., Apiaceae, Sapindaceae, and Ranunculaceae). Based on extensive sampling (a total of 322 individuals) and trnL-F cpDNA noncoding sequences, we conducted phylogenetic and haplotype network analyses for the species pair of Rubus crataegifolius (continental progenitor)-R. takesimensis (insular derivative). Rubus takesimensis on Ulleung Island is not a monophyletic group, suggesting at least two independent introductions from geographically and genetically divergent source populations. No significant reduction in cpDNA haplotype diversity and genetic differentiation in R. takesimensis are consistent with expectations from the anagenetically derived species. A further study based on comprehensive sampling and more variable molecular markers will shed light into the genetic consequences of anagenetic speciation in Rubus on Ulleung Island.

本文言語English
ページ(範囲)163-174
ページ数12
ジャーナルJournal of Plant Biology
60
2
DOI
出版ステータスPublished - 2017 4月 1

ASJC Scopus subject areas

  • 植物科学

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