Divergence within and among 3 Varieties of the Endemic Tree, 'Ohi'a Lehua (Metrosideros polymorpha) on the Eastern Slope of Hawai'i Island
Examination of neutral genetic structure within young, hypervariable tree species over heterogeneous landscapes can yield insight into the causes of divergence within trees. Three varieties of the Hawaiian-forest-dominant, Metrosideros polymorpha , occur across the main islands and partition 2 strik...
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fthighwire:oai:open-archive.highwire.org:jhered:est027v1 2023-05-15T18:45:48+02:00 Divergence within and among 3 Varieties of the Endemic Tree, 'Ohi'a Lehua (Metrosideros polymorpha) on the Eastern Slope of Hawai'i Island DeBoer, Nicholas Stacy, Elizabeth A. 2013-05-02 12:57:07.0 text/html http://jhered.oxfordjournals.org/cgi/content/short/est027v1 https://doi.org/10.1093/jhered/est027 en eng Oxford University Press http://jhered.oxfordjournals.org/cgi/content/short/est027v1 http://dx.doi.org/10.1093/jhered/est027 Copyright (C) 2013, American Genetic Association Original Article TEXT 2013 fthighwire https://doi.org/10.1093/jhered/est027 2013-05-28T10:22:40Z Examination of neutral genetic structure within young, hypervariable tree species over heterogeneous landscapes can yield insight into the causes of divergence within trees. Three varieties of the Hawaiian-forest-dominant, Metrosideros polymorpha , occur across the main islands and partition 2 striking environmental gradients on young Hawai’i Island. In an examination of 6 nuclear microsatellite loci across 10 populations on east Hawai’i, we found differentiation among varieties (mean F ST = 0.065; max = 0.081) that exceeded that observed among populations of some continental tree species over much broader spatial scales. High-elevation var. polymorpha exhibited the strongest average differentiation ( F ST = 0.071). Weaker differentiation between the early- and late-successional varieties was consistent with previous records of high hybridization between these varieties coupled with differential selection favoring var. incana in early-successional or dry environments, and var. glaberrima in late-successional environments. A comparison of within-variety F ST values suggests that active volcanoes shape the genetic structure of early- and late-successional varieties differently. Examination of genetic structure of these same varieties on older islands is required to assess the degree to which the differentiation observed on Hawai’i Island is attributable to multiple colonizations of this young island by partially diverged forms versus divergence in situ. Text Young Island HighWire Press (Stanford University) Young Island ENVELOPE(162.400,162.400,-66.417,-66.417) Journal of Heredity 104 4 449 458 |
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HighWire Press (Stanford University) |
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English |
topic |
Original Article |
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Original Article DeBoer, Nicholas Stacy, Elizabeth A. Divergence within and among 3 Varieties of the Endemic Tree, 'Ohi'a Lehua (Metrosideros polymorpha) on the Eastern Slope of Hawai'i Island |
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Original Article |
description |
Examination of neutral genetic structure within young, hypervariable tree species over heterogeneous landscapes can yield insight into the causes of divergence within trees. Three varieties of the Hawaiian-forest-dominant, Metrosideros polymorpha , occur across the main islands and partition 2 striking environmental gradients on young Hawai’i Island. In an examination of 6 nuclear microsatellite loci across 10 populations on east Hawai’i, we found differentiation among varieties (mean F ST = 0.065; max = 0.081) that exceeded that observed among populations of some continental tree species over much broader spatial scales. High-elevation var. polymorpha exhibited the strongest average differentiation ( F ST = 0.071). Weaker differentiation between the early- and late-successional varieties was consistent with previous records of high hybridization between these varieties coupled with differential selection favoring var. incana in early-successional or dry environments, and var. glaberrima in late-successional environments. A comparison of within-variety F ST values suggests that active volcanoes shape the genetic structure of early- and late-successional varieties differently. Examination of genetic structure of these same varieties on older islands is required to assess the degree to which the differentiation observed on Hawai’i Island is attributable to multiple colonizations of this young island by partially diverged forms versus divergence in situ. |
format |
Text |
author |
DeBoer, Nicholas Stacy, Elizabeth A. |
author_facet |
DeBoer, Nicholas Stacy, Elizabeth A. |
author_sort |
DeBoer, Nicholas |
title |
Divergence within and among 3 Varieties of the Endemic Tree, 'Ohi'a Lehua (Metrosideros polymorpha) on the Eastern Slope of Hawai'i Island |
title_short |
Divergence within and among 3 Varieties of the Endemic Tree, 'Ohi'a Lehua (Metrosideros polymorpha) on the Eastern Slope of Hawai'i Island |
title_full |
Divergence within and among 3 Varieties of the Endemic Tree, 'Ohi'a Lehua (Metrosideros polymorpha) on the Eastern Slope of Hawai'i Island |
title_fullStr |
Divergence within and among 3 Varieties of the Endemic Tree, 'Ohi'a Lehua (Metrosideros polymorpha) on the Eastern Slope of Hawai'i Island |
title_full_unstemmed |
Divergence within and among 3 Varieties of the Endemic Tree, 'Ohi'a Lehua (Metrosideros polymorpha) on the Eastern Slope of Hawai'i Island |
title_sort |
divergence within and among 3 varieties of the endemic tree, 'ohi'a lehua (metrosideros polymorpha) on the eastern slope of hawai'i island |
publisher |
Oxford University Press |
publishDate |
2013 |
url |
http://jhered.oxfordjournals.org/cgi/content/short/est027v1 https://doi.org/10.1093/jhered/est027 |
long_lat |
ENVELOPE(162.400,162.400,-66.417,-66.417) |
geographic |
Young Island |
geographic_facet |
Young Island |
genre |
Young Island |
genre_facet |
Young Island |
op_relation |
http://jhered.oxfordjournals.org/cgi/content/short/est027v1 http://dx.doi.org/10.1093/jhered/est027 |
op_rights |
Copyright (C) 2013, American Genetic Association |
op_doi |
https://doi.org/10.1093/jhered/est027 |
container_title |
Journal of Heredity |
container_volume |
104 |
container_issue |
4 |
container_start_page |
449 |
op_container_end_page |
458 |
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1766236965476237312 |