AUTHOR=Wang Ming , Le Moigne Marie-Anne , Bertheloot Jessica , Crespel Laurent , Perez-Garcia Maria-Dolores , Ogé Laurent , Demotes-Mainard Sabine , Hamama Latifa , Davière Jean-Michel , Sakr Soulaiman 

TITLE=BRANCHED1: A Key Hub of Shoot Branching

JOURNAL=Frontiers in Plant Science

VOLUME=10

YEAR=2019

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2019.00076

DOI=10.3389/fpls.2019.00076

ISSN=1664-462X

ABSTRACT=<p>Shoot branching is a key process for plant growth and fitness. Newly produced axes result from axillary bud outgrowth, which is at least partly mediated through the regulation of <italic>BRANCHED1</italic> gene expression (BRC1/TB1/FC1). <italic>BRC1</italic> encodes a pivotal bud-outgrowth-inhibiting transcription factor belonging to the TCP family. As the regulation of <italic>BRC1</italic> expression is a hub for many shoot-branching-related mechanisms, it is influenced by endogenous (phytohormones and nutrients) and exogenous (light) inputs, which involve so-far only partly identified molecular networks. This review highlights the central role of BRC1 in shoot branching and its responsiveness to different stimuli, and emphasizes the different knowledge gaps that should be addressed in the near future.</p>