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Abiotic Stress Tolerance in Plants: Brassinosteroids Navigate Competently
Abira Chaudhuri1, Koushik Halder1,2, Malik Z Abdin2
1National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India.
International Journal of Molecular Sciences
|December 11, 2022
Summary
Brassinosteroids (BRs) are key plant hormones regulating growth and development. This review highlights their crucial role in enhancing plant tolerance to various abiotic stresses like drought and salinity.
Area of Science:
- Plant Biology
- Hormone Signaling
- Stress Physiology
Background:
- Brassinosteroids (BRs) are essential steroidal hormones regulating diverse plant physiological processes, including growth, development, and stress responses.
- Abiotic stresses significantly reduce agricultural yield, necessitating strategies to enhance crop resilience.
- Plants possess mechanisms to combat stress, such as scavenging reactive oxygen species (ROS).
Purpose of the Study:
- To explore the signaling pathways of brassinosteroids (BRs) under various abiotic stress conditions.
- To summarize the positive contributions of BRs to plant abiotic stress tolerance.
- To identify potential targets within BR signaling for crop improvement.
Main Methods:
- Literature review of recent research on brassinosteroid signaling and abiotic stress.
- Analysis of the role of BRs in plant responses to drought, salinity, temperature extremes, and heavy metals.
- Synthesis of findings on BRs' involvement in ROS scavenging and stress combat machinery.
Main Results:
- BR signaling is complex and dynamically regulated under abiotic stress conditions.
- BRs play a significant role in conferring tolerance to multiple abiotic stresses by modulating plant metabolism and defense mechanisms.
- BRs are involved in mitigating the negative effects of stresses like drought, salinity, and heavy metal toxicity.
Conclusions:
- Understanding BR signaling pathways offers significant potential for improving crop yields under adverse environmental conditions.
- Tailoring BR biosynthesis, signaling, or perception can enhance crop resilience to abiotic stresses.
- BRs are vital regulators for plant survival and productivity in challenging environments.
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