Journal
DEVELOPMENTAL CELL
Volume 22, Issue 3, Pages 678-685Publisher
CELL PRESS
DOI: 10.1016/j.devcel.2012.02.002
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Funding
- Interuniversity Attraction Poles Programme [IUAP VI/33]
- Research Foundation-Flanders
- Agency for Innovation by Science and Technology
- Austrian Science Fund
- Wiener Wissenschafts-, Forschungs-, und Technologiefonds
- AGRON-OMICS [LSHG-CT-2006-037704]
- European Molecular Biology Organization
- Austrian Science Fund (FWF) [P 21533] Funding Source: researchfish
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Growth and development are coordinated by an array of intercellular communications. Known plant signaling molecules include phytohormones and hormone peptides. Although both classes can be implicated in the same developmental processes, little is known about the interplay between phytohormone action and peptide signaling within the cellular microenvironment. We show that genes coding for small secretory peptides, designated GOLVEN (GLV), modulate the distribution of the phytohormone auxin. The deregulation of the GLV function impairs the formation of auxin gradients and alters the reorientation of shoots and roots after a gravity stimulus. Specifically, the GLV signal modulates the trafficking dynamics of the auxin efflux carrier PIN-FORMED2 involved in root tropic responses and meristem organization. Our work links the local action of secretory peptides with phytohormone transport.
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