Flowering at the phytomer scale.

flower; inflorescence; leaf polarity; phytomer; shoot branching; shoot meristem; Plant Leaves/growth & development; Plant Leaves/genetics; Flowers/growth & development; Flowers/genetics; Arabidopsis/growth & development; Meristem/growth & development; Meristem/genetics; Arabidopsis; Flowers; Meristem; Plant Leaves; Plant Science

Abstract :

[en] Phytomers are the repetitive units of the shoot, produced by apical meristems. Their formation follows a stereotyped sequence that begins with the initiation of a leaf primordium, followed by an axillary meristem (AxM). This coordination is altered at the transition to flowering, after which newly formed phytomers display structural rearrangements caused by the repression of leaf growth and the acceleration of AxM development. These changes are discussed with the aim of integrating knowledge of floral transition into the molecular mechanisms of phytomer formation in arabidopsis. Special attention is paid to the role of the floral repressor TERMINAL FLOWER 1 in the last pretransition phytomers and to the action of LEAFY in the initiation of floral phytomers.

Disciplines :

Phytobiology (plant sciences, forestry, mycology...)

Author, co-author :

Linden, Julie ; Université de Liège - ULiège > Integrative Biological Sciences (InBioS)

Gaydardzhiev, Kiril ; Université de Liège - ULiège > Département des sciences de la vie > Physiologie végétale

Bouché, Frédéric ; Université de Liège - ULiège > Département des sciences de la vie > Physiologie végétale

Périlleux, Claire ; Université de Liège - ULiège > Département des sciences de la vie > Physiologie végétale

Language :

English

Title :

Flowering at the phytomer scale.

Publication date :

May 2026

Journal title :

Trends in Plant Science

ISSN :

1360-1385

eISSN :

1878-4372

Publisher :

Elsevier Ltd, England

Special issue title :

30th Anniversary issue: Big concepts - shaping the future of plant science

Volume :

Issue :

Pages :

662 - 676

Peer reviewed :

Peer Reviewed verified by ORBi

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique

Funding number :

J.0154.22

Funding text :

This work was supported by the Fonds de la Recherche Scientifique - FNRS under Grant No J.0154.22 . J.L. and K.G. are grateful to the FRIA for the award of a PhD fellowship under Grants No FC33993 and FC57811 , respectively.

Available on ORBi :

since 01 June 2026

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