Evidence map›Paper›PMID 41362936›Full record

ArticleAnnals of botany2026

Geographically proximate rare species exhibit strong population divergence while maintaining intraspecific genetic diversity in Homoranthus (Myrtaceae).

Eilish S McMaster, Peter J Pemberton, Jeremy J Bruhl, Adam Fawcett, John T Hunter, Manu E Saunders, Elizabeth M Wandrag, Jia-Yee Samantha Yap, Ian R H Telford, Maurizio Rossetto and 1 more

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Article in Annals of botany, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors.

Eilish S McMasterSchool of Life and Environmental Sciences, University of Sydney, Camperdown, NSW 2050, Australia.ORCID 0000-0002-7415-8690
Peter J PembertonSchool of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia.ORCID 0009-0002-3696-551X
Jeremy J BruhlBotany and N.C.W. Beadle Herbarium, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia.
Adam FawcettNational Parks and Wildlife Service, New South Wales Department of Climate Change, Energy, the Environment and Water, Faulkner Street, Armidale, NSW 2350, Australia.ORCID 0000-0002-7892-3708
John T HunterSchool of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia.
Manu E SaundersSchool of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia.ORCID 0000-0003-0645-8277
Elizabeth M WandragBiological Sciences, School of Natural Sciences, University of Tasmania, Hobart, TAS 7001, Australia.
Jia-Yee Samantha YapResearch Centre for Ecosystem Resilience, Botanic Gardens of Sydney, Sydney, NSW 2000, Australia.
Ian R H TelfordBotany and N.C.W. Beadle Herbarium, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia.
Maurizio RossettoResearch Centre for Ecosystem Resilience, Botanic Gardens of Sydney, Sydney, NSW 2000, Australia.
Rose L AndrewSchool of Environmental and Rural Sciences, University of New England, Armidale, NSW 2351, Australia.

Funding

Commonwealth Department of Agriculture, Water and the Environment (DAWE) Bushfire Recovery FundHans Wissmann Scientific Research Fund for Systematic Botany ScholarshipN.C.W. Beadle Scholarship in BotanyRobine Enid Wilson Student Scholarship SchemeSaving our Species programme of the NSW Department of Environment and HeritageUniversity of Sydney Postgraduate Award
6 · The paper itself

Abstract

BACKGROUND AND

aimsSpecies with small geographical ranges provide insights into adaptation, speciation and genetic drift, while also presenting clear conservation challenges. Homoranthus A.Cunn. ex Schauer (Myrtaceae), an Australian genus with many narrow endemics, offers a model for understanding how ecological and spatial factors drive diversification. We examined a regional hotspot with a high number of Homoranthus narrow endemics to assess patterns of genetic diversity and inform both evolutionary understanding and conservation planning.

methodsWe generated genome-wide single-nucleotide polymorphism data using DArTseq for 282 individuals across 13 Homoranthus species (40 % of the genus), including 10 narrow endemics, to assess population genetic structure and diversity. KEY

resultsAll species showed strong genetic isolation, even over a few kilometres, with populations diverging within hundreds of metres. Homoranthus lunatus includes two highly divergent, non-sister lineages, suggesting taxonomic revision. Inbreeding was common but unrelated to range size, and heterozygosity remained moderate, indicating intrinsic buffering of genetic diversity. Genome sizes were notably small relative to other angiosperms.

conclusionsEcological isolation, life-history traits, and limited dispersal drive both speciation and extinction risk in Homoranthus. Diversification and endemism are linked to spatial isolation, highlighting the need for conservation strategies that address ecological connectivity in addition to species protection.

Indexed as

Genetic VariationAustraliaGenetic SpeciationGenetics, PopulationGenome, PlantGeographyPolymorphism, Single Nucleotideconservation genomicsDArTseqHomoranthus A.Cunn. ex Schauernarrow endemicpopulation genomicsrare speciesrock outcrop endemicssmall range

Identifiers

PMID41362936
PMCPMC13409159

What Socratic holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.