Journal of Plant Biology

, Volume 49, Issue 1, pp 44–54 | Cite as

Phylogeny of korean rubus (rosaceae) based on its (nrDNA) and trnL/F intergenic region (cpdna)

Article

Abstract

We examined the phylogeny of the genusRubus in Korea using an internal transcribed spacer (ITS) of the nuclear ribosomal DNA and a trnL-trnF (trnL/F) intergenic region of the chloroplast DNA. In all, 21 ingroup species (1.2 kb for each species) were analyzed using parsimony, resulting in 672 aligned sequences from ITS, and 502 bases with trnL/F. Individual and combined analysis of ITS and trnL/F data proved that the genusRubus is a monophyletic group. This phylogeny also substantiated a previous sectional classification scheme rather than a subgerius classification scheme. However, our results did not support the earlier sectional classification by Focke (sect.Corchorifolii), but did support the sectional classification of Nakai: sect.Crataegifolii (R. crataegifolius, R. takesimensis andR. trifidus), and sect.Villosii (R. corchorifolius). Most of these species, which are found in Korea and belong to subg.Idaeobatus, appeared in two different groups in all data sets. This suggests that this subgenus is a polyphyletic group that has gone through at least two independent evolutionary processes. The taxa, when mapped onto the combined tree, showed that the occurrence of their morphological characters of simple and compound leaves was concurrent in KoreanRubus. ITS sequence data were consistent overall with the geographical distribution of each species. Furthermore, the trnL/F sequence data provided phylogenetic information within closely related species.

Keywords

chloroplast DNA (trnL/F) classification internal transcribed spacer (ITS) phylogeny Rubus 

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Copyright information

© The Botanical Society of Korea 2006

Authors and Affiliations

  1. 1.Department of BiologyKyungpook National UniversityDaeguKorea

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