Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Parallel evolution of dwarf ecotypes in the forest tree Eucalyptus globulus.

Susan A Foster1, Gay E McKinnon1, Dorothy A Steane1

  • 1School of Plant Science and Cooperative Research Centre for Forestry, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia.

The New Phytologist
|June 26, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Is phenotypic plasticity use-it-or-lose-it? Exploring genetic assimilation of salinity-plastic traits across threespine stickleback (Gasterosteus aculeatus) populations.

Evolution; international journal of organic evolution·2025
Same author

Importance of Considering the Plastic Expression of Phenotypes When Determining Evolutionary Relationships.

BioEssays : news and reviews in molecular, cellular and developmental biology·2025
Same author

Mammalian Browsers Disrupt Eco-Evolutionary Dynamics in a Forest Tree Restoration Planting.

Evolutionary applications·2025
Same author

Molecular insights into the dynamics of species invasion by hybridisation in Tasmanian eucalypts.

Molecular ecology·2023
Same author

Linking leaf economic and hydraulic traits with early-age growth performance and survival of <i>Eucalyptus pauciflora</i>.

Frontiers in plant science·2022
Same author

Genomic selection for resistance to mammalian bark stripping and associated chemical compounds in radiata pine.

G3 (Bethesda, Md.)·2022
Same journal

The value of Arabidopsis as a model for secondary xylem research.

The New phytologist·2026
Same journal

Cryptochrome-mediated signaling in root development.

The New phytologist·2026
Same journal

Keeping up with the heat: long-term dynamics and plasticity of heat tolerance in a tropical plant community.

The New phytologist·2026
Same journal

RGF signaling bridges root development and nonlethal thermal stress adaptation.

The New phytologist·2026
Same journal

Systemic acquired resistance: an emerging role for jasmonates in local signal biogenesis, translocation and distal signal decoding.

The New phytologist·2026
Same journal

A drought stress-induced MYB transcription factor regulates pavement cell shape in leaves of European aspen (Populus tremula).

The New phytologist·2026
See all related articles

Small, isolated Eucalyptus globulus dwarf ecotypes evolved independently from local tall populations. Genetic and flowering time differences suggest parallel evolution and potential for parapatric speciation in these unique Australian forest trees.

Area of Science:

  • Ecology
  • Evolutionary Biology
  • Genetics

Background:

  • Dwarf ecotypes of Eucalyptus globulus are found in isolated populations on south-eastern Australian granite headlands.
  • These dwarf populations are geographically separated, with the nearest tall Eucalyptus globulus populations located at least 100 km away.

Purpose of the Study:

  • To investigate the genetic relationships among three dwarf Eucalyptus globulus populations and their affinities to nearby tall populations.
  • To assess the mechanisms maintaining ecotype distinctiveness in close proximity, focusing on the Cape Tourville site.

Main Methods:

  • Analysis of 12 nuclear microsatellite markers to assess genetic diversity and population structure.
  • Use of a chloroplast DNA marker to trace maternal lineages and population history.

Related Experiment Videos

  • Comparison of genetic differentiation between dwarf and tall ecotypes at Cape Tourville.

    • Main Results:

    • The three dwarf populations were genetically distinct from each other and more closely related to adjacent tall Eucalyptus globulus.
    • Significant genetic differentiation was observed between dwarf and tall ecotypes at Cape Tourville using both microsatellite and chloroplast DNA markers.
    • Dwarf and tall populations exhibited differences in flowering times, with no evidence of pollen flow from tall to dwarf populations.

    Conclusions:

    • The dwarf Eucalyptus globulus populations evolved in parallel from local tall ecotypes.
    • Reproductive isolation can arise in small, marginal populations through factors like divergent flowering times and spatial separation.
    • The findings support the possibility of parapatric speciation in Eucalyptus, where distinct ecotypes evolve in adjacent geographic areas.