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Annotation of Plant Gene Function via Combined Genomics, Metabolomics and Informatics
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Whole-Genome Duplication and Plant Macroevolution.

James W Clark1, Philip C J Donoghue1

  • 1School of Earth Sciences, University of Bristol, Life Sciences Building, Bristol BS8 1TH, UK.

Trends in Plant Science
|August 21, 2018
PubMed
Summary
This summary is machine-generated.

Whole-genome duplication (WGD) in plants is common but poorly understood. New methods using molecular clocks and morphospaces improve WGD timing estimates and facilitate testing its role in plant evolution and macroevolution.

Keywords:
genome duplicationmacroevolutionplant evolutionpolyploidy

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Area of Science:

  • Evolutionary Biology
  • Genomics
  • Plant Science

Background:

  • Whole-genome duplication (WGD) is a significant evolutionary event in land plants.
  • The timing and impact of WGD events on plant evolution are not well understood.
  • Current hypotheses on WGD's evolutionary consequences are difficult to test.

Purpose of the Study:

  • To improve the accuracy of dating whole-genome duplication events in plants.
  • To develop methods for testing hypotheses about the role of WGD in plant evolution.
  • To highlight plants as a model system for studying WGD in macroevolution.

Main Methods:

  • Applied molecular clock methodology to multigene datasets for precise WGD timing.
  • Quantified phenotypic change within morphospaces.
  • Compared relative phenotypic disparity in relation to WGD events.

Main Results:

  • Improved estimates for the timing of whole-genome duplication events across plant lineages.
  • Demonstrated quantification of phenotypic changes associated with WGD.
  • Enabled comparative analysis of phenotypic disparity linked to WGD.

Conclusions:

  • Refined molecular clock and morphospace approaches facilitate robust testing of WGD's evolutionary role.
  • Plants serve as an excellent model for investigating the macroevolutionary impact of WGD.
  • This study provides a framework for understanding WGD's contribution to plant diversification.