Phylogenetic relationships of JapaneseAster (Asteraceae, Astereae) sensu lato based on chloroplast-DNA restriction site mutations |
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Authors: | Motomi Ito Akiko Soejima Kuniaki Watanabe |
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Institution: | (1) Department of Biology, Faculty of Science, Chiba University, 263-8522 Chiba, Japan;(2) Department of Life Science, College of Integrated Arts and Sciences, University of Osaka Prefecture, 599-8531 Sakai, Japan;(3) Department of Biology, Faculty of Science, Kobe University, 657-8501 Kobe, Japan |
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Abstract: | RFLPs of cpDNA were examined for 18 species ofAster, six species ofKalimeris, two species ofMiyamayomena and one species and one variety ofHeteropappus from Japan, using 16 restriction endonucleases. Approximately 275 restriction sites were surveyed, and a total of 74 restriction
site mutations was detected, and 31 of these were phylogenetically informative. Sixteen most parsimonious trees constructed
from Wagner parsimony analysis indicated the polyphyly ofKalimeris andMiyamayomena sensu Kitamura;K. miqueliana belongs to a different clade from the remaining species ofKalimeris, and two species ofMiyamayomena did not make a single clade. This result suggests that the shortening or loss of pappus have happened parallelly in different
evolutionary lineages. We must be careful to assess the pappus character in taxonomy and phylogeny, and it is desirable to
examine their phylogenetic relationships using a molecular data. |
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Keywords: | Aster Chloroplast DNA Heteropappus Kalimeris Miyamayomena RFLPs |
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