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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1111/nph.17643
|2 doi
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|a pubmed24n1095.xml
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|a eng
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| 100 |
1 |
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|a Artuso, Silvia
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Evidence for selectively constrained 3D flower shape evolution in a Late Miocene clade of Malagasy Bulbophyllum orchids
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| 264 |
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 29.09.2021
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|a Date Revised 02.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation.
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|a Questions concerning the evolution of complex biological structures are central to the field of evolutionary biology. Yet, still little information is known about the modes and temporal dynamics of three-dimensional (3D) flower shape evolution across the history of clades. Here, we combined high-resolution X-ray computed tomography with 3D geometric morphometrics and phylogenetic comparative methods to test models of whole-flower shape evolution in the orchid family, using an early Late Miocene clade (c. 50 spp.) of Malagasy Bulbophyllum as model system. Based on landmark data of 38 species, our high-dimensional model fitting decisively rejects a purely neutral mode of evolution, suggesting instead that flower shapes evolved towards a primary adaptive optimum. Only a small number of recently evolved species/lineages attained alternative shape optima, resulting in an increased rate of phenotypic evolution. Our findings provide evidence of constrained 3D flower shape evolution in a small-sized clade of tropical orchids, resulting in low rates of phenotypic evolution and uncoupled trait-diversification rates. We hypothesise that this deep imprint of evolutionary constraint on highly complex floral structures might reflect long-term (directional and/or stabilizing) selection exerted by the group's main pollinators (flies)
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| 650 |
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|a Journal Article
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| 650 |
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4 |
|a Research Support, Non-U.S. Gov't
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| 650 |
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4 |
|a Bulbophyllum
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| 650 |
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4 |
|a 3D geometric morphometrics
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| 650 |
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4 |
|a Orchidaceae
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| 650 |
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4 |
|a adaptive optima
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| 650 |
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4 |
|a flower shape
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| 650 |
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4 |
|a high-resolution X-ray computed tomography
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| 650 |
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4 |
|a phylogenetic comparative methods
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| 650 |
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4 |
|a species diversification
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| 700 |
1 |
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|a Gamisch, Alexander
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Staedler, Yannick M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Schönenberger, Jürg
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Comes, Hans Peter
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 232(2021), 2 vom: 26. Okt., Seite 853-867
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|x 1469-8137
|7 nnns
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| 773 |
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|g volume:232
|g year:2021
|g number:2
|g day:26
|g month:10
|g pages:853-867
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|u http://dx.doi.org/10.1111/nph.17643
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