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Keywords:

  • apical cell;
  • compound leaf;
  • leaf development;
  • leaf domains;
  • leaf evolution;
  • meristem evolution;
  • simple leaf

Contents

  •  Summary 1

  • I. 
    Introduction 1
  • II. 
    Genetics of shoot development in simple-leafed model organisms 4
  • III.  
    Dissected leaves 11
  • IV.  
    Conclusions and future directions 13
  •  Acknowledgements 14

  •  References  14

Summary

Leaves are determinate organs produced by the shoot apical meristem. Land plants demonstrate a large range of variation in leaf form. Here we discuss evolution of leaf form in the context of our current understanding of leaf development, as this has emerged from molecular genetic studies in model organisms. We also discuss specific examples where parallel studies of development in different species have helped understanding how diversification of leaf form may occur in nature.