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Related Experiment Videos

Division and differentiation during normal and liguleless-1 maize leaf development.

A W Sylvester1, W Z Cande, M Freeling

  • 1Department of Plant Biology, University of California, Berkeley 94720.

Development (Cambridge, England)
|November 1, 1990
PubMed
Summary
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The liguleless-1 gene in maize is crucial for normal leaf development, affecting cell division patterns. Its product likely influences the early determination of the blade-sheath boundary.

Area of Science:

  • Plant developmental biology
  • Maize genetics
  • Cellular morphogenesis

Background:

  • Maize leaf development involves distinct stages and structures like the ligule and auricle.
  • The liguleless-1 (lg1) allele results in the loss of these structures.
  • Understanding cellular events in lg1 mutants provides insights into normal leaf development.

Purpose of the Study:

  • To investigate the cellular events during maize leaf development, focusing on cell division and differentiation.
  • To analyze the role of the liguleless-1 gene in these processes.
  • To identify alterations in cell division patterns in lg1 mutants.

Main Methods:

  • Utilized a novel method to assess anticlinal division plane orientation.
  • Determined a division index based on epidermal cross-wall deposition.

Related Experiment Videos

  • Compared cellular events in normal and liguleless-1 maize plants.

    • Main Results:

    • Normal maize leaf development progresses through three distinct stages: preligule, formation, and sheath elongation.
    • Cell divisions in normal leaves become restricted and oriented over time, with localized increases at the preligule region.
    • The liguleless-1 mutant exhibits altered anticlinal division patterns in the preligule region, with either reduced division rates or a loss of longitudinal divisions.

    Conclusions:

    • The liguleless-1 gene product acts early in development, prior to ligule formation.
    • The Lg1+ gene likely plays a role in determining the blade-sheath boundary.
    • Altered cell division patterns in lg1 mutants disrupt normal ligule and auricle development.