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Role and mechanism of brassinosteroids and jasmonates in regulating phosphorus uptake and utilization in rice

Yang Jian-Chang1,*,Zhang Jian-Hua2,3   

  1. 1 Jiangsu Key Laboratory of Crop Genetics and Physiology / Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, Jiangsu, China; 2 Department of Biology, Hong Kong Baptist University, Hong Kong 999077, China; 3 The State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong 999077, China
  • Received:2026-06-29 Revised:2026-08-17 Accepted:2026-08-17 Published:2026-08-25
  • Supported by:
    This study was supported by the National Natural Science Foundation of China (32272198), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD-1), and the Government Funding to The Chinese University of Hong Kong State Key Laboratory of Agrobiotechnology via Innovation and Technology Commission (2022/23-2023/24).

Abstract: The low phosphorus use efficiency in rice is not only a serious problem in agricultural production but also a long-standing scientific challenge that remains unresolved. Brassinosteroids (BRs) and jasmonates (JAs) are two classes of novel plant hormones that play important roles in regulating plant growth and development as well as responses to abiotic stresses such as phosphorus deficiency. This paper briefly summarized the adaptive mechanisms of rice to low phosphorus stress, with a focus on the regulatory roles and mechanisms of BRs and JAs in phosphorus uptake and utilization in rice. It also discussed the regulatory approaches and existing challenges in synergistically improving rice yield and phosphorus use efficiency. It merits further investigating the spatiotemporal distribution of endogenous BRs and JAs levels in rice and their regulatory effects and mechanisms on phosphorus uptake, transport, and utilization, crosstalk of BRs and JAs with other phytohormones in mediating phosphorus uptake and translocation, as well as the approaches and principles for modulating endogenous levels of BRs and JAs to enhance phosphorus uptake, transport, and utilization. Such studies are expected to provide new insights for solving the scientific problem of low phosphorus use efficiency in crops, gain new understandings of the mechanisms underlying phosphorus uptake, transport, and utilization in rice, and explore novel approaches to simultaneously improve rice yield and phosphorus use efficiency.

Key words: rice, brassinosteroids, jasmonates, phosphorus use efficiency, regulatory mechanism

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