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Abstract Detail

Systematics Section/ASPT

Kim, Seon-Hee [1], Jun, Jumin [2], Lim, Chae Eun [2], Kim, Seung-Chul [3].

Molecular phylogeny and evolutionary diversification of Rosaceae in Korea based on ITS and cpDNA sequence data.

The Rosaceae are a medium-sized family, with approximately 3000 species in 90 genera, and are widely distributed in all continents except for the Antarctic. The family is exceptionally concentrated in the northern hemisphere. In the most recent floristic treatment of Korea, about 144 species in 37 genera are recognized, ranked the 4th largest family in Korea. The infrafamilial classification of the family has been varied considerably among treatments. The most recent treatment based on phylogenetic relationships by Potter et al. (2007) recognizes three subfamilies, i.e., Rosoideae (including Filipendula, Rubus, Rosa, and three tribes), Dryadoideae (four actinorhizal genera), and Spiraeoideae (Lyonothamnus and seven tribes). In spite of the recent development of phylogenetic classification system and interest in the family, no comprehensive phylogenetic study of Rosaceae including Korean taxa has been conducted. Therefore, in this study, we sampled major groups of Rosaceae from Korea (75 species in 23 genera) and sequenced nrDNA ITS and cpDNA (matK, rbcL, and trnL-trnF spacer). We conducted maximum parsimony (MP) analysis including major taxa from Korea and some representatives from the major lineages of Rosaceae. We hope to evaluate the Potter’s phylogenetic classification system including Korean taxa and determine the origin and evolution of several large lineages of Rosaceae in Korea. The concatenated cpDNA data set (204 OTUs and 3044 bp) found two major lineages; Rosoideae and Spiraeoideae (including Dryadoideae). The monophyletic tribes include Potentilleae, Kerriodeae, Colurieae, Sanguisorbeae, and Pyreae. Rosa, instead of being sister to Potentilleae, is sister to tribe Sanguisorbeae. Three large genera Potentilla, Prunus (including Meddenia), and Rubus are monophyletic. The ITS data set (279 OTUs and 759 bp) suggests that subfamily Rosoideae is monophyletic while Spiraeoideae is not. The two tribes Sanguisorbeae and Potentilleae, unlike the cpDNA phylogeny, are not monophyletic and the monophyly of the two tribes, Pyreae and Colurieae, are confirmed. Several major incongruences (among major lineages and within each lineage) between nuclear and cpDNA phylogeny are apparent and hybridization and/or lineage sorting are presumably responsible for those major incongruences. The phylogenetic relationships within large genera including Korean taxa, such as Prunus, Rubus, and Potentilla, and some examples of major incongruence between the two phylogenies will be presented.

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1 - Sungkyunkwan University, Biological Sciences, 2066 Seobu-ro, Suwon, Gyeong-Gi, 440-746, Korea
2 - National Institute of Biological Resources, Hwangyeong-ro 42, Incheon, 404-708, Korea
3 - Sungkyunkwan University, Biological Sciences, 2066 Seobu-ro, Suwon, Gyeonggi Do, N/A, 440-746, Korea

infrafamilial classification

Presentation Type: Poster:Posters for Sections
Session: P
Location: Eyrie/Boise Centre
Date: Monday, July 28th, 2014
Time: 5:30 PM
Number: PSY029
Abstract ID:180
Candidate for Awards:None

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