中文摘要：

棉纤维细胞的快速极性生长与植物激素的合成、细胞膜和细胞壁的合成、细胞壁的松弛和延展密切相关。其中，植物激素作为调控因子一直是纤维发育领域研究的热点。该文对植物激素乙烯、油菜素内酯、赤霉素、活性氧以及超长链脂肪酸的生物合成及信号转导途径进行了综述，并介绍了它们在棉纤维发生发育过程中的作用机理及相互关系的最新研究进展，为深入阐明纤维细胞伸长的调控规律，最终提高棉纤维产量和品质提供理论依据。

英文摘要：

Fast polarized growth of cotton fiber cell requires biosynthesis of various phytohormones, biosynthesis of plasma membrane and cell wall components, cell wall loosing and expansion. Study on phytohormones, the most important regulators, is always a hot topic of cotton fiber development. Here, we briefly summarized the research progresses in biosynthesis and signaling pathways of ethylene, brassinosteroid, gibberellin, reactive oxygen species and very long-chain fatty acids, and their cross-talk during fiber cell elongation.