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A molecular phylogeny of the fern family Pteridaceae: assessing overall relationships and the affinities of previously unsampled genera.

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Date
2007-09
Authors
Schuettpelz, E
Schneider, H
Huiet, L
Windham, MD
Pryer, KM
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Abstract
The monophyletic Pteridaceae accounts for roughly 10% of extant fern diversity and occupies an unusually broad range of ecological niches, including terrestrial, epiphytic, xeric-adapted rupestral, and even aquatic species. In this study, we present the results of the first broad-scale and multi-gene phylogenetic analyses of these ferns, and determine the affinities of several previously unsampled genera. Our analyses of two newly assembled data sets (including 169 newly obtained sequences) resolve five major clades within the Pteridaceae: cryptogrammoids, ceratopteridoids, pteridoids, adiantoids, and cheilanthoids. Although the composition of these clades is in general agreement with earlier phylogenetic studies, it is very much at odds with the most recent subfamilial classification. Of the previously unsampled genera, two (Neurocallis and Ochropteris) are nested within the genus Pteris; two others (Monogramma and Rheopteris) are early diverging vittarioid ferns, with Monogramma resolved as polyphyletic; the last previously unsampled genus (Adiantopsis) occupies a rather derived position among cheilanthoids. Interestingly, some clades resolved within the Pteridaceae can be characterized by their ecological preferences, suggesting that the initial diversification in this family was tied to ecological innovation and specialization. These processes may well be the basis for the diversity and success of the Pteridaceae today.
Type
Journal article
Subject
Pteridaceae
Ecosystem
Evolution, Molecular
Phylogeny
Molecular Sequence Data
Genetic Variation
Permalink
https://hdl.handle.net/10161/21813
Published Version (Please cite this version)
10.1016/j.ympev.2007.04.011
Publication Info
Schuettpelz, E; Schneider, H; Huiet, L; Windham, MD; & Pryer, KM (2007). A molecular phylogeny of the fern family Pteridaceae: assessing overall relationships and the affinities of previously unsampled genera. Molecular phylogenetics and evolution, 44(3). pp. 1172-1185. 10.1016/j.ympev.2007.04.011. Retrieved from https://hdl.handle.net/10161/21813.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
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Pryer

Kathleen M. Pryer

Professor of Biology
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