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Related Experiment Videos

Plastid division: evolution, mechanism and complexity.

Jodi Maple1, Simon Geir Møller

  • 1Department of Mathematics and Natural Sciences, University of Stavanger, 4036 Stavanger, Norway.

Annals of Botany
|December 2, 2006
PubMed
Summary
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Chloroplast division, originating from bacterial endosymbionts, involves unique eukaryotic modifications. This review details the sophisticated machinery and regulation of plastid division in plants.

Area of Science:

  • Plant biology
  • Cell biology
  • Evolutionary biology

Background:

  • Chloroplasts, originating as bacterial endosymbionts, maintain continuity through division.
  • Bacterial division factors are largely absent; eukaryotic host has added components like ARC3, ARC5, and FZL.
  • The FtsZ gene is modified, and the Min system has lost MinC but retained MinE and MinD.

Purpose of the Study:

  • To review the current understanding of chloroplast division mechanisms in higher plants.
  • To emphasize how recent findings shape our understanding of component function and evolution.
  • To decipher the coordination and control of plastid division by nuclear-encoded factors.

Main Methods:

  • Molecular-genetic approaches
  • Biochemical approaches

Related Experiment Videos

  • Review of recent microarray data

    • Main Results:

    • FtsZ initiates plastid division, with MinD and MinE ensuring correct Z-ring placement.
    • ARC3 may function as an FtsZ antagonist in plants, replacing bacterial MinC.
    • A sophisticated division machinery involves prokaryotic (ARC6, GC1) and eukaryotic (ARC5, FZL) proteins.

    Conclusions:

    • Bacterial cell division mechanisms offer insights into chloroplast division.
    • Highly regulated plastid division in host cells has evolved unique features.
    • Understanding plastid division is key to plant cell biology.