Abstract
The phylogeny of Japanese species ofChrysosplenium (Saxifragaceae) was examined using variation in DNA sequences.
Sequences ofrbcL andmatK genes were compared for their feasibility for reconstructing the phylogeny ofChrysosplenium, and thematK sequences was found to give greater resolution. All but one of the 17 Japanese species have been examined formatK gene sequences and phylogenetic analysis of these data resulted in eight most parsimonious trees of 390 steps and a consistency index (Cl) of 0.823. The molecular phylogeny obtained was generally in agreement with Hara's (1957) classification based upon phenotypic similarity, although a conclusion needs extensive examination of the genus on a world-wide level. Using the phylogenetic data, character evolution was examined, especially in the characters traditionally used for grouping infrageneric taxa. Differentiation of opposite and alternate phyllotaxis appears to have occurred only once in the course of evolution ofChrysosplenium.
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Nakazawa, M., Wakabayashi, M., Ono, M. et al. Molecular phylogenetic analysis ofChrysosplenium (Saxifragaceae) in Japan. J. Plant Res. 110, 265–274 (1997). https://doi.org/10.1007/BF02509315
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DOI: https://doi.org/10.1007/BF02509315