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Updated: Mar 30, 2026

Forced Flowering in Mandarin Trees under Phytotron Conditions
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Flowering at the phytomer scale.

Julie Linden1, Kiril Gaydardzhiev1, Frédéric Bouché1

  • 1Laboratory of Plant Physiology, InBioS-PhytoSYSTEMS, Department of Life Sciences, University of Liège, Liège, Belgium.

Trends in Plant Science
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Summary
This summary is machine-generated.

Plant development involves phytomers, the shoot

Keywords:
flowerinflorescenceleaf polarityphytomershoot branchingshoot meristem

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Area of Science:

  • Plant developmental biology
  • Molecular genetics
  • Arabidopsis research

Background:

  • Phytomers are repeating shoot units formed by apical meristems.
  • Phytomer development involves sequential initiation of leaf primordia and axillary meristems (AxM).
  • The transition to flowering alters phytomer structure by repressing leaf growth and accelerating AxM development.

Purpose of the Study:

  • To integrate understanding of the floral transition into phytomer formation mechanisms.
  • To investigate the roles of key genes in regulating phytomer development during floral transition.

Main Methods:

  • Analysis of phytomer formation in Arabidopsis.
  • Examination of gene expression patterns related to floral transition.
  • Investigating the function of TERMINAL FLOWER 1 and LEAFY genes.

Main Results:

  • Floral transition significantly restructures newly formed phytomers.
  • TERMINAL FLOWER 1 plays a role in pre-floral transition phytomers.
  • LEAFY influences the initiation of floral phytomers.

Conclusions:

  • The floral transition involves coordinated changes in phytomer development.
  • Specific genes like TERMINAL FLOWER 1 and LEAFY are critical regulators of these changes.
  • Understanding these mechanisms provides insight into plant architecture plasticity.