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A PHR-dependent reciprocal antagonistic interplay between UV response and P-deficiency adaptation in plants

文献类型： 外文期刊

作者： Ren, Jianhao 1 ; Li, Tianjie 1 ; Guo, Meina 2 ; Zhang, Qianqian 1 ; Ren, Suna 1 ; Wang, Long 1 ; Wu, Qingyu 1 ; Niu, Shihui 2 ; Yi, Keke 1 ; Ruan, Wenyuan 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, Key Lab Plant Nutr & Fertilizer,Minist Agr, Beijing 100081, Peoples R China

2.Beijing Forestry Univ, Coll Biol Sci & Technol, Natl Engn Res Ctr Tree Breeding & Ecol Restorat, State Key Lab Efficient Prod Forest Resources, Beijing 100083, Peoples R China

关键词： ultraviolet; UV; phosphorus; P; plants; PHRs; PSR; UV radiation response

期刊名称：PLANT COMMUNICATIONS （ 影响因子：11.6； 五年影响因子：11.8 ）

ISSN： 2590-3462

年卷期： 2025 年 6 卷 1 期

页码：

收录情况： SCI

摘要： Plants are often simultaneously stressed by both UV radiation and phosphorus (P) deficiency in agricultural ecosystems. Coordinated responses and adaptations to these stressors are critical for plant growth, development, and survival. However, the underlying molecular response and adaptation mechanisms in plants are not fully understood. Here, we show that plants use a reciprocal antagonistic strategy in response to UV radiation and P deficiency. UV radiation inhibits P-starvation response processes and disrupts phosphate (Pi) homeostasis by suppressing the function of PHOSPHATE STARVATION RESPONSE PROTEINS (PHRs), the Pi central regulators. Conversely, P availability modulates plant UV tolerance and the expression of UV radiation response genes in a PHR-dependent manner. Therefore, reducing the P supply or increasing PHR activities can improve tolerance to UV stress in rice. Moreover, this antagonistic interaction is conserved across various plant species. Our meta-analysis showed that the increase in global UV radiation over the last 40 years may have reduced crop P-utilization efficiency worldwide. Our findings provide insights for optimizing P fertilizer management and breeding smart crops that are resilient to fluctuations in UV radiation and soil P levels.

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