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Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana

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Brassinosteroids in Plants: Crosstalk with Small-Molecule Compounds.

Dongliang Hu¹, Lijuan Wei¹, Weibiao Liao¹

¹College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.

|December 24, 2021

Summary

Brassinosteroids (BRs) and small-molecule compounds (SMCs) like nitric oxide regulate plant growth and stress responses. Their crosstalk enhances plant development and resilience by optimizing key physiological processes.

Keywords:

ethylene hydrogen peroxide hydrogen sulfide nitric oxide stress response

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Area of Science:

Plant Biology
Plant Physiology
Biochemistry

Background:

Brassinosteroids (BRs) are a crucial class of plant hormones involved in numerous physiological processes.
Small-molecule compounds (SMCs), including nitric oxide (NO), ethylene, hydrogen peroxide (H2O2), and hydrogen sulfide (H2S), act as vital signaling molecules in plants.
Emerging research highlights the significant role of SMCs in brassinosteroid-mediated plant growth and stress adaptation.

Purpose of the Study:

To review the functions of brassinosteroids (BRs) and small-molecule compounds (SMCs) in plant biology.
To elucidate the intricate crosstalk between BRs and SMCs in regulating plant growth and development.
To explore how this crosstalk contributes to plant stress resistance mechanisms.

Main Methods:

This review synthesizes existing scientific literature.
It analyzes studies on brassinosteroid and small-molecule compound signaling pathways.
The review focuses on experimental evidence demonstrating the interactions between BRs and SMCs.

Main Results:

Brassinosteroids (BRs) and small-molecule compounds (SMCs) interact to influence seed germination, root development, stem elongation, and fruit ripening.
The crosstalk between BRs and SMCs plays a key role in modulating plant responses to various environmental stresses.
This interaction enhances plant resilience by optimizing antioxidant systems, photosynthetic efficiency, carbohydrate metabolism, and osmotic adjustment.

Conclusions:

The interplay between brassinosteroids (BRs) and small-molecule compounds (SMCs) is fundamental for promoting plant growth and development.
This crosstalk is essential for improving plant tolerance to abiotic and biotic stresses.
Understanding BR-SMC interactions offers potential strategies for enhancing crop productivity and stress resilience.