Journal
PLANT SIGNALING & BEHAVIOR
Volume 5, Issue 5, Pages 580-582Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/psb.11495
Keywords
Arabidopsis thaliana; auxin; lateral root; cell cycle; MONOPTEROS; BODENLOS
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Funding
- Research Foundation-Flanders
- Institute for the Promotion of Innovation by Science and Technology in Flanders
- European Molecular Biology Organization [ALTF 108-2006]
- Marie Curie Intra-European Fellowship scheme [FP6 MEIF-CT-2007-041375]
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In plants, the phytohormone auxin plays a prominent role in controlling nearly every step in plant growth and development. However, it is unclear how one generic signal such as auxin can be translated in so many diverse developmental responses. Recently, we could show that, next to its well known role in embryogenesis, the auxin response module controlled by the BODENLOS (BDL)/INDOLE-3-ACETIC ACID12 (IAA12)-MONOPTEROS (MP)/AUXIN RESPONSE FACTOR5 (ARF5) pair also plays a role in lateral root development, and that this auxin response succeeds the one controlled by SOLITARY ROOT (SLR)/IAA14-ARF7-ARF19. We conclude that bi- or multimodular response mechanisms might be a general principle of auxin signaling in plants, which provides a genetic framework for a single molecule such as auxin to have many diverse functions.
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