Aquaporins are channel proteins present in the plasma and intracellular membranes of plant cells, where they facilitate the transport of water and/or small neutral solutes (urea, boric acid, silicic acid) or gases (ammonia, carbon dioxide). Recent progress was made in understanding the molecular bases of aquaporin transport selectivity and gating. The present review examines how a wide range of selectivity profiles and regulation properties allows aquaporins to be integrated in numerous functions, throughout plant development, and during adaptations to variable living conditions. Although they play a central role in water relations of roots, leaves, seeds, and flowers, aquaporins have also been linked to plant mineral nutrition and carbon and nitrogen fixation.

中文翻译：

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植物水通道蛋白：具有多种集成功能的膜通道

水通道蛋白是存在于植物细胞的质膜和细胞内膜中的通道蛋白，它们促进水和/或小的中性溶质（尿素、硼酸、硅酸）或气体（氨、二氧化碳）的运输。最近在理解水通道蛋白转运选择性和门控的分子基础方面取得了进展。本综述研究了广泛的选择性特征和调节特性如何使水通道蛋白在植物发育过程中以及适应各种生活条件的过程中整合到多种功能中。虽然它们在根、叶、种子和花的水分关系中发挥核心作用，但水通道蛋白也与植物矿物质营养和固碳固氮有关。