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Brassinosteroids in cotton: orchestrating fiber development.

Ghulam Qanmber^1,2, Zhao Liu^1,2, Fuguang Li^1,2,3

¹Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.

The New Phytologist

|September 23, 2024

Summary

Brassinosteroids (BRs) are key plant hormones that promote cell elongation. This review details how BR signaling impacts cotton fiber development, offering strategies to enhance fiber quality and yield.

Keywords:

brassinosteroids cotton fiber development fiber elongation fiber quality yield

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Area of Science:

Plant Biology
Molecular Genetics
Agricultural Science

Background:

Cotton is a vital global crop, with fiber development crucial for yield and quality.
Brassinosteroids (BRs) are plant hormones known to regulate cell elongation, a key process in cotton fiber growth.
Existing research indicates BRs positively influence cotton fiber development, yet a comprehensive review is lacking.

Purpose of the Study:

To provide a detailed review of recent advancements in brassinosteroid (BR) signaling in cotton fiber development.
To analyze the complex network of BR biosynthesis, signaling, and regulation in cotton.
To propose molecular strategies for optimizing BR-related genes to improve cotton fiber quality and yield.

Main Methods:

Literature review and synthesis of current research on BRs and cotton fiber development.
Analysis of BR biosynthesis pathways, signaling components, and regulatory mechanisms.
Exploration of crosstalk between BR signaling and other plant hormone pathways.

Main Results:

BR signaling is integral to cotton fiber cell elongation and overall development.
The review consolidates information on BR biosynthesis, signaling molecules, and transcriptional regulators.
Identified key genetic elements and molecular strategies for BR optimization in cotton.

Conclusions:

Brassinosteroid homeostasis and hormonal balance are critical for optimal cotton fiber development.
Targeted manipulation of BR pathways presents significant opportunities for enhancing cotton fiber quality and yield.
This review provides a strategic framework for future research and application of BRs in cotton breeding.