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Related Experiment Videos

Acquisition of identity in the developing leaf

A W Sylvester1, L Smith, M Freeling

  • 1Department of Biological Sciences, University of Idaho, Moscow 83844, USA.

Annual Review of Cell and Developmental Biology
|January 1, 1996
PubMed
Summary
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Plant leaves develop progressively from the shoot apical meristem. Leaf identity acquisition involves changing molecular and cellular processes as the leaf matures, with cell lineage and position influencing cell fate.

Area of Science:

  • Plant biology
  • Developmental biology
  • Molecular genetics

Background:

  • Plants generate leaves from the shoot apical meristem, a dynamic structure responsible for shoot growth.
  • Leaf development is a complex process involving the acquisition of specific identities for the leaf as a whole and its individual parts.

Purpose of the Study:

  • To explore the progressive nature of leaf identity acquisition.
  • To investigate how underlying molecular and cellular mechanisms change during leaf maturation.
  • To discuss the roles of cell lineage versus position-dependent models in specifying cell fates during leaf development.

Main Methods:

  • Review of molecular and cellular evidence.
  • Analysis of developmental processes in plant leaves.

Related Experiment Videos

  • Comparative discussion of lineage-based and position-dependent models.

    • Main Results:

    • Leaf identity is not determined at a single point but acquired progressively.
    • The molecular and cellular mechanisms governing leaf development change as the leaf matures.
    • Both cell lineage and position-dependent factors contribute to cell fate specification.

    Conclusions:

    • Leaf development is a dynamic and plastic process.
    • Understanding the interplay between cell lineage and positional information is crucial for deciphering leaf development.
    • Further research can elucidate the precise contribution of each model to leaf morphogenesis.