Liu Kunlun, Liang Xingyi, Wang Weiling, Huo Zhongyang, Zhao Can
Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Key Laboratory of Crop Cultivation and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College, Yangzhou University, 88 Daxue South Road, Yangzhou 225009, China.
Plants (Basel). 2025 Jul 15;14(14):2193. doi: 10.3390/plants14142193.
Nitrogen (N) is one of the most important nutrients determining crop growth performance. With the increasing demand for sustainability in global agriculture, improving nitrogen use efficiency in rice has become a critical issue. Nitrogen use efficiency (NUE) in rice is a complex trait influenced by multiple factors, among which phytohormones play a key role. NUE is primarily regulated through the influence of phytohormones on absorption, transport, assimilation, and utilization processes. In this review, we focus on these interactions and summarize the relationships between major hormones and nitrogen use efficiency in rice. Finally, we outline the current challenges and future research prospects in this field. Although studies have shown promising results for their role in improving crop NUE, the specific mechanisms remain unclear. Additionally, the interactions among phytohormones and the influence of environmental factors on their effectiveness require further investigation. This review provides theoretical support and technical guidance for understanding the role of phytohormones in rice NUE and offers insights into improving NUE in rice.
氮（N）是决定作物生长性能的最重要养分之一。随着全球农业对可持续性的需求不断增加，提高水稻的氮利用效率已成为一个关键问题。水稻的氮利用效率（NUE）是一个受多种因素影响的复杂性状，其中植物激素起着关键作用。NUE主要通过植物激素对吸收、运输、同化和利用过程的影响来调节。在本综述中，我们关注这些相互作用，并总结了水稻中主要激素与氮利用效率之间的关系。最后，我们概述了该领域当前的挑战和未来的研究前景。尽管研究表明它们在提高作物NUE方面发挥了有前景的作用，但其具体机制仍不清楚。此外，植物激素之间的相互作用以及环境因素对其有效性的影响需要进一步研究。本综述为理解植物激素在水稻NUE中的作用提供了理论支持和技术指导，并为提高水稻的NUE提供了见解。
