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Collection and Long-Term Maintenance of Leaf-Cutting Ants Atta in Laboratory Conditions
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Leaf development and evolution.

Lachezar A Nikolov1, Adam Runions1, Mainak Das Gupta1

  • 1Max Planck Institute for Plant Breeding Research, Cologne, Germany.

Current Topics in Developmental Biology
|January 8, 2019
PubMed
Summary
This summary is machine-generated.

Leaf shape diversity arises from margin outgrowths patterned by CUP-SHAPED COTYLEDON and auxin. Evolutionary changes in homeobox genes further shape these leaf margin forms.

Keywords:
BrassicaceaeComparative developmentGene regulatory evolutionGrowthLeaf shape diversityMargin development

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Area of Science:

  • Plant developmental biology
  • Genetics
  • Evolutionary biology

Background:

  • Plant leaves develop from shoot apical meristem (SAM) stem cells.
  • Leaf shape diversity is influenced by marginal outgrowths, regulated by specific genetic and hormonal pathways.

Purpose of the Study:

  • To investigate the patterning mechanisms underlying leaf margin development.
  • To understand the role of transcription factors and phytohormones in generating leaf shape diversity.
  • To explore the genetic basis of evolutionary changes in leaf margin form.

Main Methods:

  • Analysis of gene expression patterns related to leaf margin development.
  • Investigating the function of CUP-SHAPED COTYLEDON and auxin in patterning.
  • Studying the impact of homeobox gene evolution on leaf morphology.

Main Results:

  • Leaf margin outgrowths are generated by a patterning mechanism involving CUP-SHAPED COTYLEDON and auxin.
  • Leaf lamina growth significantly influences the size, shape, and distribution of marginal protrusions.
  • Evolutionary modifications in homeobox gene classes contribute to diverse leaf margin forms.

Conclusions:

  • The development of leaf margin complexity involves intricate interactions between genetic networks and growth regulation.
  • Understanding these mechanisms provides insight into the evolution of plant diversity.
  • Homeobox genes are key targets for investigating evolutionary changes in leaf morphology.