Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.
State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China.
New Phytol. 2024 Dec;244(5):1732-1741. doi: 10.1111/nph.20143. Epub 2024 Sep 22.
Cotton cultivation spans over 30 million hectares across 85 countries and regions, with more than half participating in the global cotton textile trade. The elongated cotton fiber cell is an ideal model for studying cell elongation and understanding plant growth and development. Brassinosteroids (BRs), recognized for their role in cell elongation, offer the potential for improving cotton fiber quality and yield. Despite extensive research highlighting BR's positive impact on fiber development, a comprehensive review on this topic has been lacking. This review addresses this gap, providing a detailed analysis of the latest advancements in BR signaling and its effects on cotton fiber development. We explore the complex network of BR biosynthesis components, signaling molecules, and regulators, including crosstalk with other pathways and transcriptional control mechanisms. Additionally, we propose molecular strategies and highlight key genetic elements for optimizing BR-related genes to enhance fiber quality and yield. The review emphasizes the importance of BR homeostasis and the hormonal landscape during cotton fiber development, offering insights into targeted manipulation opportunities and challenges. This consolidation offers a comprehensive understanding of BR's multifaceted roles in fiber development, outlining a strategic approach for BR optimization in cotton fiber quality and yield.
棉花种植面积超过 3000 万公顷，分布在 85 个国家和地区，其中一半以上参与全球棉花纺织品贸易。伸长的棉花纤维细胞是研究细胞伸长和理解植物生长发育的理想模型。油菜素甾醇（BRs）因其在细胞伸长中的作用而被认可，具有改善棉花纤维质量和产量的潜力。尽管有大量研究强调 BR 对纤维发育的积极影响，但在这一主题上缺乏全面的综述。本综述填补了这一空白，详细分析了 BR 信号转导及其对棉花纤维发育影响的最新进展。我们探讨了 BR 生物合成成分、信号分子和调节剂的复杂网络，包括与其他途径的串扰和转录控制机制。此外，我们提出了分子策略，强调了优化 BR 相关基因以提高纤维质量和产量的关键遗传元件。该综述强调了 BR 内稳态和棉花纤维发育过程中激素景观的重要性，为靶向操纵提供了机会和挑战。这一整合提供了对 BR 在纤维发育中多方面作用的全面理解，为在棉花纤维质量和产量方面优化 BR 提供了战略方法。
