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Related Experiment Videos

Is the Suppressor-mutator element controlled by a basic developmental regulatory mechanism?

N V Fedoroff1, J A Banks

  • 1Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland 21210.

Genetics
|October 1, 1988
PubMed
Summary
This summary is machine-generated.

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Genetic studies reveal two components controlling maize Suppressor-mutator (Spm) transposable element activity: phase setting and phase programming. These elements can be reset and reprogrammed during plant development, linked to meristem fate.

Area of Science:

  • Genetics
  • Molecular Biology
  • Developmental Biology

Background:

  • The maize a locus is crucial for pigment production.
  • Transposable elements, like Suppressor-mutator (Spm), can alter gene activity.
  • Understanding Spm element regulation is key to maize genetics.

Purpose of the Study:

  • To investigate the genetic control of Suppressor-mutator (Spm) transposable element activity in maize.
  • To identify the components responsible for regulating Spm element's active and inactive phases.
  • To explore the developmental regulation and heritability of Spm element phasing.

Main Methods:

  • Genetic analysis of maize a locus derivatives with Spm insertions.
  • Characterization of Spm element activity and inactivation.

Related Experiment Videos

  • Observing Spm element phase resetting and reprogramming patterns during plant development.

    • Main Results:

    • Identified two genetically distinct components: phase setting (activity control) and phase program (stability and heritability).
    • Demonstrated reproducible resetting of the Spm element's phase during plant development.
    • Showed that Spm elements can be reprogrammed for phase changes independently of activity.
    • Observed differential expression of Spm resetting/reprogramming capacity in apical and lateral meristems.

    Conclusions:

    • Spm element activity is regulated by a two-component genetic mechanism.
    • Plant development involves reproducible Spm element phase resetting and reprogramming.
    • The regulation of Spm element phasing is linked to fundamental developmental mechanisms in meristems.