Zhu Yilin, Gao Fei
College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
Biomolecules. 2025 Jul 30;15(8):1103. doi: 10.3390/biom15081103.
Plant pathogenesis-related (PR) proteins are a large and diverse family of proteins with antimicrobial activity, often induced by pathogen attack. Traditionally, PR proteins were thought to mainly participate in plant defense mechanisms against biotic stress. However, in recent years, increasing evidence has shown that these proteins also play important roles in the response to abiotic stress in plants. In the present review, we provide a summary of the latest findings on PR proteins and focus on their response to various abiotic stresses, the mechanism by which PR proteins are activated by external and internal signals, and their biological functions in plant responses to abiotic stresses. In addition, the existing challenges and future applications are also summarized, aiming to provide a reference for further research on PR proteins in the context of plant physiology.
植物病程相关（PR）蛋白是一类具有抗菌活性的庞大且多样的蛋白质家族，通常由病原体攻击诱导产生。传统上，PR蛋白被认为主要参与植物抵御生物胁迫的防御机制。然而，近年来，越来越多的证据表明这些蛋白在植物对非生物胁迫的响应中也发挥着重要作用。在本综述中，我们总结了PR蛋白的最新研究结果，重点关注它们对各种非生物胁迫的响应、PR蛋白被外部和内部信号激活的机制以及它们在植物对非生物胁迫响应中的生物学功能。此外，还总结了现有的挑战和未来的应用，旨在为植物生理学背景下PR蛋白的进一步研究提供参考。
