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Cited by 58Plant Diversity and EvolutionGenetic diversity and population structureChromosomal and Genetic Variations

Ancestral polymorphisms shape the adaptive radiation of Metrosideros across the Hawaiian Islands

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Choi, Jae Young, Dai, Xiaoguang, Alam, Ornob, Peng, Julie Z., Rughani, Priyesh, Hickey, Scott, Harrington, Eoghan, Juul, Sissel +3 more·2021·Proceedings of the National Academy of Sciences
DOI 10.1073/pnas.2023801118PMC PMC8449318
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Abstract

Significance: Some of the most spectacular adaptive radiations of plants and animals occur on remote oceanic islands, yet such radiations are preceded by founding events that severely limit genetic variation. How genetically depauperate founder populations give rise to the spectacular phenotypic and ecological diversity characteristic of island adaptive radiations is not known. We generated genomic resources for Hawaiian Metrosideros ––a hyper-variable adaptive radiation of woody taxa—for insights into the paradox of remote island radiations. We posit that divergent selection and differential sorting of an unexpectedly rich pool of ancestral variation drove the diversification of lineages. Recurring use of ancient variants from a richer-than-expected gene pool may explain how lineages can diversify to fill countless niches on remote islands.

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  • In island radiations such as that of Metrosideros, there is limited evidence that reductions in Ne track within-island diversification.

    “As well, in island radiations such as that of Metrosideros, there is limited evidence that reductions in Ne track within-island diversification (Choi et al., 2021).”

    From Genomics of plant speciation (2023) · cites this paper as Choi et al., 2021

    The Results section (“Divergence Times of Metrosideros across the Islands”; page unavailable) reports a shared reduction in effective population size (Ne) associated with the ancestral colonization of the islands, followed by taxon-specific changes. This supports distinguishing the shared bottleneck from later diversification, but the paper does not explicitly test whether Ne reductions track within-island diversification or characterize the evidence for that relationship as limited. (LLM, conf=0.78)

    Experimental — accuracy not yet measured

  • In the Hawaiian Metrosideros adaptive radiation, FST outliers were enriched for loci that were differentially fixed between related species.

    “In the Hawaiian Metrosideros adaptive radiation, FST outliers were enriched for loci that were differentially fixed between related species.”

    From Genomics of plant speciation (2023) · cites this paper as Choi et al. (2021)

  • The Metrosideros adaptive radiation across the Hawaiian Islands appears to have been shaped by recurrent use of ancient variants.

    “Likewise, the Metrosideros adaptive radiation across the Hawaiian Islands appears to have been shaped by recurrent use of ancient variants (Choi et al., 2021).”

    From Genomics of plant speciation (2023) · cites this paper as Choi et al., 2021

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References 104 · Cited by 58

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Authors
Choi, J. Y., Dai, X., Alam, O., Peng, J. Z., Rughani, P., Hickey, S., Harrington, E., Juul, S., Ayroles, J. F., Purugganan, M. D., & Stacy, E. A.
Affiliations
  • New York University (US)
  • Oxford Nanopore Technologies Inc., New York, NY 10013;
  • Princeton University (US)
  • Oxford Nanopore Technologies Inc., San Francisco, CA 94501;
  • University of Nevada, Las Vegas (US)
Corresponding author
  • Choi, Jae Young
  • Stacy, Elizabeth A.
ORCID
Venue
Proceedings of the National Academy of Sciences
Publisher
National Academy of Sciences
Published
2021-09-08
Volume
118
Issue
37
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
DOI
10.1073/pnas.2023801118
PMC
PMC8449318
OpenAlex
W3197434050
Cited by
58
References
104
Citations by year
2026: 11 · 2025: 17 · 2024: 12 · 2023: 11 · 2022: 6 · 2021: 1
FWCI
5.69
Type
journal article
Language
en
Open access
Licence
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Digital Scholarship - UNLV (University of Nevada Reno) (submittedVersion, cc-by-nc-nd)
Funders
  • National Science Foundation (IOS-1546218, DEB0954274, HRD-0833211)
  • Zegar Family Foundation (A16-0051)
  • NYUAD Research Institute (G1205)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Plant Diversity and Evolution
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
Metrosideros, adaptive radiation, ancestral polymorphism, founder populations, island biogeography, Hawaiian Islands, divergent selection, genomic resources, woody plants, niche diversification
MeSH terms
Adaptation, Physiological, Genetics, Population, Phenotype, Polymorphism, Genetic, Radiation Tolerance, Radiation, Ionizing, Evolution, Molecular, Myrtaceae, Genetic Speciation

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