Ice-age endurance: DNA evidence of a white spruce refugium in Alaska
International audience Paleorecords offer key information for evaluating model simulations of species migration in response to forecast climatic change. However, their utility can be greatly compromised by the existence of glacial refugia that are undetectable in fossil records (cryptic refugia). De...
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ftunivnantes:oai:HAL:hal-02667187v1 2023-05-15T16:41:09+02:00 Ice-age endurance: DNA evidence of a white spruce refugium in Alaska Anderson, Lynn L. Hu, Feng Sheng Nelson, David M. Petit, Remy, Paige, Ken N. University of Illinois University of Illinois System Biodiversité, Gènes et Ecosystèmes (BioGeCo) Institut National de la Recherche Agronomique (INRA)-Université Sciences et Technologies - Bordeaux 1 (UB) 2006 https://hal.inrae.fr/hal-02667187 https://doi.org/10.1073/pnas.0605310103 en eng HAL CCSD National Academy of Sciences info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.0605310103 hal-02667187 https://hal.inrae.fr/hal-02667187 doi:10.1073/pnas.0605310103 PRODINRA: 9117 PUBMEDCENTRAL: PMC1567899 ISSN: 0027-8424 EISSN: 1091-6490 Proceedings of the National Academy of Sciences of the United States of America https://hal.inrae.fr/hal-02667187 Proceedings of the National Academy of Sciences of the United States of America, 2006, 103 (33), pp.12447-12450. ⟨10.1073/pnas.0605310103⟩ REFUGIA CHLOROPLAST CLIMATIC CHANGE BERINGIA EPICEA PICEA GLAUCA ADN CHLOROPLASTIQUE [SDV.BC]Life Sciences [q-bio]/Cellular Biology info:eu-repo/semantics/article Journal articles 2006 ftunivnantes https://doi.org/10.1073/pnas.0605310103 2023-02-08T06:30:59Z International audience Paleorecords offer key information for evaluating model simulations of species migration in response to forecast climatic change. However, their utility can be greatly compromised by the existence of glacial refugia that are undetectable in fossil records (cryptic refugia). Despite several decades of investigation, it remains controversial whether Beringia, the largely unglaciated area extending from northeastern Siberia to the Yukon Territory, harbored small populations of certain boreal tree species during the last glaciation. Here, we present genetic evidence for the existence of a glacial refuge in Alaska that helps to resolve this long-standing controversy. We sequenced chloroplast DNA (cpDNA) of white spruce (Picea glauca), a dominant boreal tree species, in 24 forest stands across northwestern North America. The majority of cpDNA haplotypes are unique, and haplotype diversity is relatively high in Alaska, arguing against the possibility that this species migrated into the region from areas south of the Laurentide Ice Sheet after the end of the last glaciation. Thus, white spruce apparently survived long glacial episodes under climatic extremes in a heterogeneous landscape matrix. These results suggest that estimated rates of tree migration from fossil records may be too high and that the ability of trees to track anthropogenic warming may be more limited than previously thought Article in Journal/Newspaper Ice Sheet Alaska Beringia Siberia Yukon Université de Nantes: HAL-UNIV-NANTES Yukon Proceedings of the National Academy of Sciences 103 33 12447 12450 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
REFUGIA CHLOROPLAST CLIMATIC CHANGE BERINGIA EPICEA PICEA GLAUCA ADN CHLOROPLASTIQUE [SDV.BC]Life Sciences [q-bio]/Cellular Biology |
spellingShingle |
REFUGIA CHLOROPLAST CLIMATIC CHANGE BERINGIA EPICEA PICEA GLAUCA ADN CHLOROPLASTIQUE [SDV.BC]Life Sciences [q-bio]/Cellular Biology Anderson, Lynn L. Hu, Feng Sheng Nelson, David M. Petit, Remy, Paige, Ken N. Ice-age endurance: DNA evidence of a white spruce refugium in Alaska |
topic_facet |
REFUGIA CHLOROPLAST CLIMATIC CHANGE BERINGIA EPICEA PICEA GLAUCA ADN CHLOROPLASTIQUE [SDV.BC]Life Sciences [q-bio]/Cellular Biology |
description |
International audience Paleorecords offer key information for evaluating model simulations of species migration in response to forecast climatic change. However, their utility can be greatly compromised by the existence of glacial refugia that are undetectable in fossil records (cryptic refugia). Despite several decades of investigation, it remains controversial whether Beringia, the largely unglaciated area extending from northeastern Siberia to the Yukon Territory, harbored small populations of certain boreal tree species during the last glaciation. Here, we present genetic evidence for the existence of a glacial refuge in Alaska that helps to resolve this long-standing controversy. We sequenced chloroplast DNA (cpDNA) of white spruce (Picea glauca), a dominant boreal tree species, in 24 forest stands across northwestern North America. The majority of cpDNA haplotypes are unique, and haplotype diversity is relatively high in Alaska, arguing against the possibility that this species migrated into the region from areas south of the Laurentide Ice Sheet after the end of the last glaciation. Thus, white spruce apparently survived long glacial episodes under climatic extremes in a heterogeneous landscape matrix. These results suggest that estimated rates of tree migration from fossil records may be too high and that the ability of trees to track anthropogenic warming may be more limited than previously thought |
author2 |
University of Illinois University of Illinois System Biodiversité, Gènes et Ecosystèmes (BioGeCo) Institut National de la Recherche Agronomique (INRA)-Université Sciences et Technologies - Bordeaux 1 (UB) |
format |
Article in Journal/Newspaper |
author |
Anderson, Lynn L. Hu, Feng Sheng Nelson, David M. Petit, Remy, Paige, Ken N. |
author_facet |
Anderson, Lynn L. Hu, Feng Sheng Nelson, David M. Petit, Remy, Paige, Ken N. |
author_sort |
Anderson, Lynn L. |
title |
Ice-age endurance: DNA evidence of a white spruce refugium in Alaska |
title_short |
Ice-age endurance: DNA evidence of a white spruce refugium in Alaska |
title_full |
Ice-age endurance: DNA evidence of a white spruce refugium in Alaska |
title_fullStr |
Ice-age endurance: DNA evidence of a white spruce refugium in Alaska |
title_full_unstemmed |
Ice-age endurance: DNA evidence of a white spruce refugium in Alaska |
title_sort |
ice-age endurance: dna evidence of a white spruce refugium in alaska |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.inrae.fr/hal-02667187 https://doi.org/10.1073/pnas.0605310103 |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
Ice Sheet Alaska Beringia Siberia Yukon |
genre_facet |
Ice Sheet Alaska Beringia Siberia Yukon |
op_source |
ISSN: 0027-8424 EISSN: 1091-6490 Proceedings of the National Academy of Sciences of the United States of America https://hal.inrae.fr/hal-02667187 Proceedings of the National Academy of Sciences of the United States of America, 2006, 103 (33), pp.12447-12450. ⟨10.1073/pnas.0605310103⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.0605310103 hal-02667187 https://hal.inrae.fr/hal-02667187 doi:10.1073/pnas.0605310103 PRODINRA: 9117 PUBMEDCENTRAL: PMC1567899 |
op_doi |
https://doi.org/10.1073/pnas.0605310103 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
103 |
container_issue |
33 |
container_start_page |
12447 |
op_container_end_page |
12450 |
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1766031584187645952 |