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Toward an empirical framework for interpreting plastid evolution.

John W Stiller1

  • 1Department of Biology, East Carolina University, Greenville, North Carolina, 27858, USA.

Journal of Phycology
|March 19, 2016
PubMed
Summary
This summary is machine-generated.

Evolutionary models should reconsider minimizing plastid endosymbioses. Empirical data show plastid losses are rare, and evolutionary convergences are common across diverse algae, suggesting a more complex history.

Keywords:
algaechloroplastchromalveolateendosymbiosisevolutionplastid

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Area of Science:

  • Evolutionary biology
  • Photosynthesis research
  • Cell biology

Background:

  • The dominant evolutionary framework minimizes plastid endosymbioses in eukaryotic photosynthesis history.
  • This framework struggles to align with observed algal and plant evolution patterns.
  • It hinders understanding the current distribution of plastids.

Purpose of the Study:

  • To challenge the prevailing view of minimizing plastid endosymbioses.
  • To propose a more empirically supported framework for interpreting algal evolution.
  • To reconcile phylogenomic data with observed evolutionary patterns.

Main Methods:

  • Analysis of empirical data on plastid evolution.
  • Review of patterns in algal and plant evolution.
  • Comparison of endosymbiotic origins and biochemical/architectural changes.
  • Evaluation of phylogenomic investigation results.

Main Results:

  • Plastid losses are empirically rare events.
  • Significant changes in plastid biochemistry/architecture indicate endosymbiotic events.
  • Convergent evolution in algae with different endosymbiotic origins is driven by similar selection pressures.
  • The minimization framework is not supported by empirical data.

Conclusions:

  • A new framework, prioritizing empirical data, is needed for understanding eukaryotic photosynthesis history.
  • Plastid losses are uncommon, and evolutionary convergences are significant.
  • This revised perspective aids in interpreting complex phylogenomic results in algal evolution.