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Abstract：
Aquaporins (AQPs) are membrane channel proteins regulating the flux of water and other various small solutes across membranes. Significant progress has been made in understanding the roles of AQPs in plants\' physiological processes, and now their activities in various plant⁻microbe interactions are receiving more attention. This review summarizes the various roles of different AQPs during interactions with microbes which have positive and negative consequences on the host plants. In positive plant⁻microbe interactions involving rhizobia, arbuscular mycorrhizae (AM), and plant growth-promoting rhizobacteria (PGPR), AQPs play important roles in nitrogen fixation, nutrient transport, improving water status, and increasing abiotic stress tolerance. For negative interactions resulting in pathogenesis, AQPs help plants resist infections by preventing pathogen ingress by influencing stomata opening and influencing defensive signaling pathways, especially through regulating systemic acquired resistance. Interactions with bacterial or viral pathogens can be directly perturbed through direct interaction of AQPs with harpins or replicase. However, whilst these observations indicate the importance of AQPs, further work is needed to develop a fuller mechanistic understanding of their functions.
摘要：
水通道蛋白（AQP）是膜通道蛋白，可调节水和其他各种小溶质跨膜的通量。在理解AQP在植物生理过程中的作用方面取得了重大进展，现在它们在各种植物中的活动都受到越来越多的关注。本文综述了不同AQP在与微生物相互作用过程中的各种作用，这些作用对寄主植物产生积极和消极的影响。在涉及根瘤菌的积极植物微生物相互作用中，丛枝菌根（AM），和植物生长促进根际细菌（PGPR），AQPs在固氮中起重要作用，养分运输，改善水状况，并提高非生物胁迫耐受性。对于导致发病机制的负面相互作用，AQP通过影响气孔开放和影响防御信号通路来防止病原体进入，从而帮助植物抵抗感染，特别是通过调节系统获得性抵抗力。与细菌或病毒病原体的相互作用可以通过AQP与harpin或复制酶的直接相互作用而直接被干扰。然而,虽然这些观察表明了AQP的重要性，需要进一步的工作来发展对其功能的更全面的机械理解。
