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Updated: Mar 31, 2026

Lateral Root Inducible System in Arabidopsis and Maize
Published on: January 14, 2016
Strigolactones spatially influence lateral root development through the cytokinin signaling network
Lingxiang Jiang1, Cedrick Matthys1, Belen Marquez-Garcia1
1Department of Plant Systems Biology, VIB, 9052 Gent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Gent, Belgium.
Strigolactone analog GR24 inhibits lateral root (LR) emergence by interacting with cytokinin signaling. This hormonal crosstalk, involving auxins and cytokinins, is crucial for regulating LR development.
Area of Science:
- Plant Biology
- Hormone Signaling
- Root Development
Background:
- Strigolactones are key plant hormones regulating root architecture.
- Lateral root development is a complex process influenced by multiple phytohormones.
Purpose of the Study:
- To investigate the effect of strigolactone analog GR24 on lateral root development.
- To elucidate the interaction between strigolactones and cytokinin signaling in root development.
Main Methods:
- Treatment with strigolactone analog GR24.
- Analysis of lateral root initiation, priming, and emergence.
- Mutant analyses of the cytokinin signaling pathway (AHK3/ARR1/ARR12).
- Pharmacological and gene expression analyses.
Main Results:
- GR24 negatively impacted lateral root priming and emergence, particularly near the root-shoot junction.
- Mutants in the AHK3/ARR1/ARR12 cytokinin pathway were insensitive to GR24's effects.
- Disrupted polar auxin transport was observed in mutants of the cytokinin pathway.
Conclusions:
- The strigolactone GR24 influences lateral root development through interaction with the cytokinin signaling module.
- Auxin and cytokinin hormonal crosstalk is essential for mediating strigolactone effects on lateral root development.
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