Functional Traits Divergence in Parallelly Evolved Rheophytic Populations of <i>Solidago virgaurea </i>L. Complex (Asteraceae) in Japan
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- Sakaguchi Shota
- Graduate School of Human and Environmental Studies, Kyoto University
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- Abe Atsushi
- Okinawa Churashima Research Center
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- Nagasawa Koki
- Graduate School of Human and Environmental Studies, Kyoto University
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- Takahashi Daiki
- Graduate School of Human and Environmental Studies, Kyoto University
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- Setoguchi Hiroaki
- Graduate School of Human and Environmental Studies, Kyoto University
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- Maki Masayuki
- Botanical Gardens, Tohoku University
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- Kyan Ryuta
- Botanical Gardens, Tohoku University
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- Nishino Takako
- Graduate School of Science, Osaka Prefecture University
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- Ishikawa Naoko
- Graduate School of Arts and Sciences, The University of Tokyo
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- Hirota Shun K.
- Graduate School of Agricultural Science, Tohoku University
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- Suyama Yoshihisa
- Graduate School of Agricultural Science, Tohoku University
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- Ito Motomi
- Graduate School of Arts and Sciences, The University of Tokyo
Description
Repeated adaptation to similar environments can lead to divergence of phenotypes in different populations. Such evolutionary changes sometimes result in incongruence between morphology and molecular phylogeny, for which careful biological investigation is required. Natural phenotypic variation in rheophytic populations of the Solidago virgaurea L. complex (Asteraceae), which evolved multiple times from ancestral dryland forms in Japan, are here reported. Common garden experiments and population genetic analysis were used to evaluate the extent to which parallelly evolved rheophytes diverged in morphological, phenological and genotypic features to understand their complex evolutionary history. Significant divergence among rheophytic populations was detected in multiple traits, even in leaf morphological traits, which are similarly subjected to purifying selection by water pressure in riparian habitats. Whereas most of the variation were attributed to differences between specific pairs of populations, flowering phenology showed latitudinal variation, which likely evolved along a large-scale environmental cline. Multivariate analysis revealed that at least the population on Okinawa Isl., at the edge of the range of the species, is phenotypically distinguishable from rheophytic populations on the main islands. Phylogenetic analysis also suggested that the Okinawan rheophytes are genetically isolated from parapatric dryland populations. Based on the evidence, the Okinawan rheophytic plants are recognized as specifically distinct and are described as Solidago yambaruensis S. Sakaguchi & Mot. Ito.
Journal
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- Acta phytotaxonomica et geobotanica
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Acta phytotaxonomica et geobotanica 72 (2), 93-111, 2021-06-30
The Japanese Society for Plant Systematics
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Keywords
Details 詳細情報について
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- CRID
- 1390288535621418112
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- NII Article ID
- 130008060667
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- ISSN
- 21897042
- 13467565
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- Text Lang
- en
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- Data Source
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- JaLC
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed