Ding Lei, Chaumont François
Louvain Institute of Biomolecular Science and Technology, UCLouvain, Louvain-la-Neuve, Belgium.
Front Plant Sci. 2020 Apr 21;11:458. doi: 10.3389/fpls.2020.00458. eCollection 2020.
The opening and closure of stomata depend on the turgor pressure adjustment by the influx or efflux of ions and water in guard cells. In this process, aquaporins may play important roles by facilitating the transport of water and other small molecules. In this perspective, we consider the potential roles of aquaporins in the membrane diffusion of different molecules (HO, CO, and HO), processes dependent on abscisic acid and CO signaling in guard cells. While the limited data already available emphasizes the roles of aquaporins in stomatal movement, we propose additional approaches to elucidate the specific roles of single or several aquaporin isoforms in the stomata and evaluate the perspectives aquaporins might offer to improve stomatal dynamics.
气孔的开闭取决于保卫细胞中离子和水的流入或流出所引起的膨压调节。在此过程中，水通道蛋白可能通过促进水和其他小分子的运输发挥重要作用。从这个角度来看，我们考虑水通道蛋白在不同分子（H₂O、CO₂和H₂O₂）的膜扩散中的潜在作用，这些过程依赖于保卫细胞中的脱落酸和CO₂信号传导。虽然现有的有限数据强调了水通道蛋白在气孔运动中的作用，但我们提出了额外的方法来阐明单个或几种水通道蛋白异构体在气孔中的具体作用，并评估水通道蛋白在改善气孔动态方面可能提供的前景。
