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Geographical structure, narrow species ranges, and Cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts

The evolutionary history and classification of epiphyllous cryptogams are still poorly known. Leptolejeunea is a largely epiphyllous pantropical liverwort genus with about 25 species characterized by deeply bilobed underleaves, elliptic to narrowly obovate leaf lobes, the presence of ocelli, and veg...

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Autores principales: Bechteler, Julia, Schäfer‐Verwimp, Alfons, Lee, Gaik Ee, Feldberg, Kathrin, Pérez‐Escobar, Oscar Alejandro, Pócs, Tamás, Peralta, Denilson F., Renner, Matthew A. M., Heinrichs, Jochen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5243195/
https://www.ncbi.nlm.nih.gov/pubmed/28116059
http://dx.doi.org/10.1002/ece3.2656
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author Bechteler, Julia
Schäfer‐Verwimp, Alfons
Lee, Gaik Ee
Feldberg, Kathrin
Pérez‐Escobar, Oscar Alejandro
Pócs, Tamás
Peralta, Denilson F.
Renner, Matthew A. M.
Heinrichs, Jochen
author_facet Bechteler, Julia
Schäfer‐Verwimp, Alfons
Lee, Gaik Ee
Feldberg, Kathrin
Pérez‐Escobar, Oscar Alejandro
Pócs, Tamás
Peralta, Denilson F.
Renner, Matthew A. M.
Heinrichs, Jochen
author_sort Bechteler, Julia
collection PubMed
description The evolutionary history and classification of epiphyllous cryptogams are still poorly known. Leptolejeunea is a largely epiphyllous pantropical liverwort genus with about 25 species characterized by deeply bilobed underleaves, elliptic to narrowly obovate leaf lobes, the presence of ocelli, and vegetative reproduction by cladia. Sequences of three chloroplast regions (rbcL, trnL‐F, psbA) and the nuclear ribosomal ITS region were obtained for 66 accessions of Leptolejeunea and six outgroup species to explore the phylogeny, divergence times, and ancestral areas of this genus. The phylogeny was estimated using maximum‐likelihood and Bayesian inference approaches, and divergence times were estimated with a Bayesian relaxed clock method. Leptolejeunea likely originated in Asia or the Neotropics within a time interval from the Early Eocene to the Late Cretaceous (67.9 Ma, 95% highest posterior density [HPD]: 47.9–93.7). Diversification of the crown group initiated in the Eocene or early Oligocene (38.4 Ma, 95% HPD: 27.2–52.6). Most species clades were established in the Miocene. Leptolejeunea epiphylla and L. schiffneri originated in Asia and colonized African islands during the Plio‐Pleistocene. Accessions of supposedly pantropical species are placed in different main clades. Several monophyletic morphospecies exhibit considerable sequence variation related to a geographical pattern. The clear geographic structure of the Leptolejeunea crown group points to evolutionary processes including rare long‐distance dispersal and subsequent speciation. Leptolejeunea may have benefitted from the large‐scale distribution of humid tropical angiosperm forests in the Eocene.
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spelling pubmed-52431952017-01-23 Geographical structure, narrow species ranges, and Cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts Bechteler, Julia Schäfer‐Verwimp, Alfons Lee, Gaik Ee Feldberg, Kathrin Pérez‐Escobar, Oscar Alejandro Pócs, Tamás Peralta, Denilson F. Renner, Matthew A. M. Heinrichs, Jochen Ecol Evol Original Research The evolutionary history and classification of epiphyllous cryptogams are still poorly known. Leptolejeunea is a largely epiphyllous pantropical liverwort genus with about 25 species characterized by deeply bilobed underleaves, elliptic to narrowly obovate leaf lobes, the presence of ocelli, and vegetative reproduction by cladia. Sequences of three chloroplast regions (rbcL, trnL‐F, psbA) and the nuclear ribosomal ITS region were obtained for 66 accessions of Leptolejeunea and six outgroup species to explore the phylogeny, divergence times, and ancestral areas of this genus. The phylogeny was estimated using maximum‐likelihood and Bayesian inference approaches, and divergence times were estimated with a Bayesian relaxed clock method. Leptolejeunea likely originated in Asia or the Neotropics within a time interval from the Early Eocene to the Late Cretaceous (67.9 Ma, 95% highest posterior density [HPD]: 47.9–93.7). Diversification of the crown group initiated in the Eocene or early Oligocene (38.4 Ma, 95% HPD: 27.2–52.6). Most species clades were established in the Miocene. Leptolejeunea epiphylla and L. schiffneri originated in Asia and colonized African islands during the Plio‐Pleistocene. Accessions of supposedly pantropical species are placed in different main clades. Several monophyletic morphospecies exhibit considerable sequence variation related to a geographical pattern. The clear geographic structure of the Leptolejeunea crown group points to evolutionary processes including rare long‐distance dispersal and subsequent speciation. Leptolejeunea may have benefitted from the large‐scale distribution of humid tropical angiosperm forests in the Eocene. John Wiley and Sons Inc. 2016-12-20 /pmc/articles/PMC5243195/ /pubmed/28116059 http://dx.doi.org/10.1002/ece3.2656 Text en © 2016 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Bechteler, Julia
Schäfer‐Verwimp, Alfons
Lee, Gaik Ee
Feldberg, Kathrin
Pérez‐Escobar, Oscar Alejandro
Pócs, Tamás
Peralta, Denilson F.
Renner, Matthew A. M.
Heinrichs, Jochen
Geographical structure, narrow species ranges, and Cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts
title Geographical structure, narrow species ranges, and Cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts
title_full Geographical structure, narrow species ranges, and Cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts
title_fullStr Geographical structure, narrow species ranges, and Cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts
title_full_unstemmed Geographical structure, narrow species ranges, and Cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts
title_short Geographical structure, narrow species ranges, and Cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts
title_sort geographical structure, narrow species ranges, and cenozoic diversification in a pantropical clade of epiphyllous leafy liverworts
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5243195/
https://www.ncbi.nlm.nih.gov/pubmed/28116059
http://dx.doi.org/10.1002/ece3.2656
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