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Discovery of Shoot Branching Regulator Targeting Strigolactone Receptor DWARF14
Masahiko Yoshimura1, Ayato Sato2, Keiko Kuwata2
1Graduate School of Science Nagoya University, Chikusa, Nagoya, 464-8602, Japan.
ACS Central Science
|March 14, 2018
Summary
Researchers identified DL1, a novel small molecule inhibitor of DWARF14 (D14) strigolactone receptors. DL1 increases shoot branching in plants, offering potential for crop yield improvement and understanding plant development.
Area of Science:
- Plant Biology
- Molecular Biology
- Agrochemical Research
Background:
- DWARF14 (D14) is a key strigolactone receptor regulating shoot branching.
- Controlling shoot branching is crucial for enhancing crop production and biomass.
- Yoshimulactone Green (YLG) is a fluorescence probe sensitive to D14 receptor activity.
Purpose of the Study:
- To identify novel small molecules that modulate D14 receptor activity.
- To investigate the effect of identified compounds on plant shoot architecture.
- To explore potential applications in agriculture and plant science research.
Main Methods:
- Utilized a YLG-based in vitro assay for high-throughput chemical screening.
- Identified and characterized the inhibitory effects of the small molecule DL1 on D14.
- Assessed the impact of DL1 on shoot branching in Arabidopsis and rice models.
Main Results:
- A novel potent D14 inhibitor, DL1, was identified through chemical screening.
- DL1 competes with endogenous strigolactones, effectively inhibiting D14.
- DL1 treatment significantly increased shoot branching in both Arabidopsis and rice.
Conclusions:
- DL1 is a valuable tool for studying D14 receptor functions in plant development.
- DL1 demonstrates potential as a novel agrochemical for improving crop yield.
- Targeting strigolactone signaling pathways offers promising strategies for crop enhancement.
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