Related Experiment Video
Updated: May 12, 2026

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput
Published on: March 30, 2018
ABA signaling in stress-response and seed development
Kazuo Nakashima1, Kazuko Yamaguchi-Shinozaki
1Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences JIRCAS, Tsukuba, Ibaraki 305-8686, Japan.
This review details advances in abscisic acid (ABA) signaling, focusing on ABA-dependent gene expression, key regulators like SnRK2 kinases and ABA receptors, and their role in plant stress tolerance.
Area of Science:
- Plant Biology
- Molecular Biology
- Biochemistry
Background:
- Drought induces osmotic stress and dehydration in plant cells, negatively impacting crop growth and productivity.
- Abscisic acid (ABA) is a crucial plant hormone synthesized under osmotic stress, mediating stress response and tolerance.
- ABA regulates gene expression critical for plant survival during stress and for seed development/germination.
Purpose of the Study:
- To review recent advancements in abscisic acid (ABA) signaling pathways.
- To highlight the molecular mechanisms of ABA-dependent gene expression.
- To discuss the roles of key components in ABA signaling.
Main Methods:
- Literature review of recent research on ABA signaling.
- Analysis of ABA-dependent gene expression mechanisms.
- Examination of regulatory components including transcription factors, kinases, phosphatases, and receptors.
Main Results:
- The AREB/ABF regulon, SnRK2 protein kinases, 2C-type protein phosphatases, and ABA receptors are central to ABA signaling.
- ABA-responsive element (ABRE) is a key cis-element for ABA-mediated gene expression, regulated by AREB/ABF transcription factors.
- Interactions between ABA signaling and other pathways are crucial for stress response and seed development.
Conclusions:
- Understanding ABA signaling is vital for improving plant tolerance to environmental stresses.
- Modulating the expression of ABA signaling factors holds potential for enhancing crop resilience.
- Recent discoveries illuminate complex interactions within ABA signaling networks.
More Related Videos
08:52A Seed Coat Bedding Assay to Genetically Explore In Vitro How the Endosperm Controls Seed Germination in Arabidopsis thaliana
Published on: November 9, 2013
11:27A Flexible Low Cost Hydroponic System for Assessing Plant Responses to Small Molecules in Sterile Conditions
Published on: August 25, 2018
Related Concept Videos
Cell Signaling in Plants
Endocrine Signaling
Adaptations that Reduce Water Loss
Gene Regulation During Sporulation
Responses to Heat and Cold Stress
Regulation of Transpiration by Stomata