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AOBPreview published online on August 6, 2007
Annals of Botany, doi:10.1093/aob/mcm146
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© The Author 2007. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Floral Initiation and Inflorescence Architecture: A Comparative View

Reyes Benlloch{dagger}, Ana Berbel, Antonio Serrano-Mislata and Francisco Madueño*

1 Instituto de Biología Molecular y Celular de Plantas, CSIC-UPV, CPI, Ingeniero Fausto Elio, 46022 Valencia, Spain

* For correspondence. E-mail madueno{at}ibmcp.upv.es

Received: 10 March 2007    Returned for revision: 16 April 2007    Accepted: 15 June 2007   

Background: A huge variety of plant forms can be found in nature. This is particularly noticeable for inflorescences, the region of the plant that contains the flowers. The architecture of the inflorescence depends on its branching pattern and on the relative position where flowers are formed. In model species such as Arabidopsis thaliana or Antirrhinum majus the key genes that regulate the initiation of flowers have been studied in detail and much is known about how they work. Studies being carried out in other species of higher plants indicate that the homologues of these genes are also key regulators of the development of their reproductive structures. Further, changes in these gene expression patterns and/or function play a crucial role in the generation of different plant architectures.

Scope: In this review we aim to present a summarized view on what is known about floral initiation genes in different plants, particularly dicotyledonous species, and aim to emphasize their contribution to plant architecture.

Key words: Plant architecture, inflorescence development, compound inflorescence, floral meristem identity, LEAFY, APETALA1, TERMINAL FLOWER1, legume, VEG1, DET

{dagger} Present address: Laboratoire DRDC / PCV, UMR CEA – CNRS 5168 – INRA1200 – UJF CEA, 17 rue des Martyrs, bât. C2 – 38054 GRENOBLE Cedex 9, France


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