Related Experiment Video
Updated: Dec 28, 2025

Robotic Sensing and Stimuli Provision for Guided Plant Growth
Published on: July 1, 2019
The bHLH network underlying plant shade-avoidance
Sara Buti1, Scott Hayes2, Ronald Pierik1
1Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, Utrecht, 3584 CH, The Netherlands.
Plants avoid shade by elongating stems and leaves, a process controlled by photoreceptors and transcription factors. This review details the basic helix-loop-helix (bHLH) network
Area of Science:
- Plant Biology
- Molecular Biology
- Genetics
Background:
- Shade poses a significant environmental challenge for many plant species.
- Shade-intolerant plants exhibit shade-avoidance responses, including stem and leaf elongation, to optimize light capture.
- This adaptive growth is regulated by photoreceptors and transcriptional regulators.
Purpose of the Study:
- To review recent advancements in understanding the structure and function of the basic helix-loop-helix (bHLH) transcription factor network.
- To elucidate how this bHLH network regulates shade-induced elongation growth in plants.
- To highlight the modulatory role of photoreceptors in the bHLH network through direct interactions.
Main Methods:
- Literature review of recent research on bHLH transcription factors and shade-avoidance.
- Analysis of molecular mechanisms controlling plant elongation growth.
- Integration of findings on photoreceptor-transcription factor interactions.
Main Results:
- The basic helix-loop-helix (bHLH) family of transcription factors plays a crucial role in mediating shade-induced elongation.
- Many bHLH proteins function through heterodimerization, forming a complex regulatory network.
- Photoreceptors directly interact with bHLH transcription factors, modulating the shade-avoidance response.
Conclusions:
- The bHLH network is central to regulating plant elongation in response to shade.
- Understanding the intricate interactions within the bHLH network and with photoreceptors is key to deciphering shade-avoidance mechanisms.
- This review provides a theoretical framework for future research into the molecular basis of plant shade-avoidance.
More Related Videos
07:45Using Changes in Leaf Transmission to Investigate Chloroplast Movement in Arabidopsis thaliana
Published on: July 14, 2021
10:10Investigating Tissue- and Organ-specific Phytochrome Responses using FACS-assisted Cell-type Specific Expression Profiling in Arabidopsis thaliana
Published on: May 29, 2010
Related Concept Videos
Photoreceptors and Plant Responses to Light
Light Acquisition
Cell Signaling in Plants
Adaptations that Reduce Water Loss
Short-distance Transport of Resources
Defenses Against Pathogens and Herbivores