Data from: Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences
Previous studies of the small Southern Hemisphere family Atherospermataceae have drawn contradictory conclusions regarding the number of transantarctic disjunctions and role of transoceanic dispersal in its evolution. Clarification of intergeneric relationships is critical to resolving (1) whether t...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:80437 2023-07-02T03:30:17+02:00 Data from: Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences Renner, Susanne S. Foreman, D. B. Murray, D. 2009-06-18T22:54:14.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-fu-9dni https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:80437 unknown doi:10.5061/dryad.596/1 doi:10.1080/10635159950127402 http://nbn-resolving.org/urn:nbn:nl:ui:13-fu-9dni doi:10.5061/dryad.596 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:80437 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2009 ftdans https://doi.org/10.5061/dryad.596/110.1080/1063515995012740210.5061/dryad.596 2023-06-13T13:00:00Z Previous studies of the small Southern Hemisphere family Atherospermataceae have drawn contradictory conclusions regarding the number of transantarctic disjunctions and role of transoceanic dispersal in its evolution. Clarification of intergeneric relationships is critical to resolving (1) whether the two Chilean species, Laurelia sempervirens and Laureliopsis philippiana, are related to different Australpacific species, implying two transantarctic disjunctions as suggested by morphology; (2) where the group is likely to have originated; and (3) whether observed disjunctions reflect the breakup of Gondwana. We analyzed chloroplast DNA sequences from six regions (the rbcL gene, the rpl16 intron, and the trnL-trnF, trnT-trnL, psbA-trnH, and atpB-rbcL spacer regions; together 4,338 bp) for all genera and most species of Atherospermataceae, using parsimony and maximum likelihood (ML). The family's sister group, the Chilean endemic Gomortega nitida (Gomortegaceae), was used to root the tree. Parsimony and ML yielded identical single best trees that contain three well supported clades (>80% bootstrap): Daphnandra and Doryphora from south-eastern Australia; Atherosperma and Nemuaron from Australia-Tasmania and New Caledonia, respectively; and Laurelia novae-zelandiae and Laureliopsis philippiana from New Zealand and Chile, respectively. The second Chilean species, Laurelia sempervirens, is sister to this last clade. A likelihood ratio test rejects the molecular clock for the full rbcL data set, but the clock assumption holds for the ingroup. The atherosperm fossil record goes back to the Upper Cretaceous and includes pollen, wood, and leaf fossils from Europe, Africa, South America, Antarctica, New Zealand, and Tasmania. Calibration of rbcL substitution rates with the fossils suggest an initial diversification of the family at 100-140 million years ago (MYA), likely in West Gondwana, early entry into Antarctica, and long distance dispersal to New Zealand and New Caledonia at 50-30 MYA by the ancestors of L. ... Other/Unknown Material Antarc* Antarctica Antarctica New Zealand Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) New Zealand |
institution |
Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Renner, Susanne S. Foreman, D. B. Murray, D. Data from: Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences |
topic_facet |
Life sciences medicine and health care |
description |
Previous studies of the small Southern Hemisphere family Atherospermataceae have drawn contradictory conclusions regarding the number of transantarctic disjunctions and role of transoceanic dispersal in its evolution. Clarification of intergeneric relationships is critical to resolving (1) whether the two Chilean species, Laurelia sempervirens and Laureliopsis philippiana, are related to different Australpacific species, implying two transantarctic disjunctions as suggested by morphology; (2) where the group is likely to have originated; and (3) whether observed disjunctions reflect the breakup of Gondwana. We analyzed chloroplast DNA sequences from six regions (the rbcL gene, the rpl16 intron, and the trnL-trnF, trnT-trnL, psbA-trnH, and atpB-rbcL spacer regions; together 4,338 bp) for all genera and most species of Atherospermataceae, using parsimony and maximum likelihood (ML). The family's sister group, the Chilean endemic Gomortega nitida (Gomortegaceae), was used to root the tree. Parsimony and ML yielded identical single best trees that contain three well supported clades (>80% bootstrap): Daphnandra and Doryphora from south-eastern Australia; Atherosperma and Nemuaron from Australia-Tasmania and New Caledonia, respectively; and Laurelia novae-zelandiae and Laureliopsis philippiana from New Zealand and Chile, respectively. The second Chilean species, Laurelia sempervirens, is sister to this last clade. A likelihood ratio test rejects the molecular clock for the full rbcL data set, but the clock assumption holds for the ingroup. The atherosperm fossil record goes back to the Upper Cretaceous and includes pollen, wood, and leaf fossils from Europe, Africa, South America, Antarctica, New Zealand, and Tasmania. Calibration of rbcL substitution rates with the fossils suggest an initial diversification of the family at 100-140 million years ago (MYA), likely in West Gondwana, early entry into Antarctica, and long distance dispersal to New Zealand and New Caledonia at 50-30 MYA by the ancestors of L. ... |
author |
Renner, Susanne S. Foreman, D. B. Murray, D. |
author_facet |
Renner, Susanne S. Foreman, D. B. Murray, D. |
author_sort |
Renner, Susanne S. |
title |
Data from: Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences |
title_short |
Data from: Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences |
title_full |
Data from: Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences |
title_fullStr |
Data from: Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences |
title_full_unstemmed |
Data from: Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences |
title_sort |
data from: timing transantarctic disjunctions in the atherospermataceae (laurales): evidence from coding and noncoding chloroplast sequences |
publishDate |
2009 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-fu-9dni https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:80437 |
geographic |
New Zealand |
geographic_facet |
New Zealand |
genre |
Antarc* Antarctica Antarctica New Zealand |
genre_facet |
Antarc* Antarctica Antarctica New Zealand |
op_relation |
doi:10.5061/dryad.596/1 doi:10.1080/10635159950127402 http://nbn-resolving.org/urn:nbn:nl:ui:13-fu-9dni doi:10.5061/dryad.596 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:80437 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.596/110.1080/1063515995012740210.5061/dryad.596 |
_version_ |
1770274508996870144 |