Abstract
To address systematic issues pertaining to series Pilosa of Korean Chrysosplenium, the phylogenetic relationships of the 35 accessions of Korean Chrysosplenium taxa were examined using the DNA sequence data obtained from the nuclear ribosomal internal transcribed spacer (ITS) regions and the psbK-I gene of the plastid genome. The results from both ITS and psbK-I sequence data indicated that Chrysosplenium flaviflorum formed a well-supported clade that merits species status of the taxon. The ITS phylogenetic trees detected two distinct lineages in Chrysosplenium pilosum var. fulvum. Geographically, one lineage was widely distributed throughout the country whereas the other was confined to Gyeonggi and Gangwon provinces. The plants sampled from Jeju Island, which have been recognized as C. pilosum var. sphaerospermum [C. hallaisanense] exhibited no DNA sequence feature segregating them from C. pilosum var. fulvum [C. barbatum] distributed in the mainland area of Korea. The plastid DNA sequence data was not fully in concordance with the nuclear ribosomal ITS data and the current taxa delimitation. These results suggest incomplete lineage sorting or that plastid genome capture may have occurred during the evolution of some taxa examined in the present study.
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Acknowledgments
This research was supported by Hallym University Research Fund (HRF-2010-021) and the Flora of Korea project (Eco-Technopia 21 project on environmental technology development 052-081-070).
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Kim, YI., Kim, YD. Molecular Systematic Study of Chrysosplenium Series Pilosa (Saxifragaceae) in Korea. J. Plant Biol. 54, 396–401 (2011). https://doi.org/10.1007/s12374-011-9175-6
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DOI: https://doi.org/10.1007/s12374-011-9175-6