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Wandering the plasmodesmata field as a leaf vein pattern finder.

Nguyen Manh Linh1, Akihiro Ueda1

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Plasmodesmata (PDs) facilitate auxin movement, influencing leaf vein patterning. This review explores PDs

Keywords:
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Area of Science:

  • Plant biology
  • Developmental biology
  • Molecular plant science

Background:

  • Auxin signaling and polar transport are crucial for leaf vein patterning, supported by extensive data.
  • The role of plasmodesmata (PDs) in auxin-driven leaf vein patterning was previously theoretical, based on computational models.

Purpose of the Study:

  • To review the current model of patterned vein formation in Arabidopsis.
  • To examine how plasmodesmata (PDs) facilitate auxin signal movement in leaf development.
  • To discuss unresolved questions and propose future research directions regarding PDs-enabled auxin signal movement (PEASM).

Main Methods:

  • Review of existing experimental and computational data on auxin transport and leaf venation.
  • Analysis of recent experimental findings supporting PDs' role in auxin movement.
  • Synthesis of current knowledge and identification of research gaps.

Main Results:

  • Experimental evidence now supports the involvement of PDs in auxin-mediated leaf vein patterning.
  • PDs play a significant role in facilitating auxin movement essential for patterned vein formation.

Conclusions:

  • Plasmodesmata are experimentally validated components of the auxin-driven leaf vein patterning mechanism.
  • Further research into PDs-enabled auxin signal movement (PEASM) is needed to fully elucidate leaf vein patterning.