Deregulation of aquaporin expression and its effect on stomatal conductance, stomatal aperture, and stomatal density. Black bar borders indicate overexpression of aquaporins. Red bar borders indicate silencing of aquaporins. The numbers refer to the references. All the overexpression results were obtained with the use of constitutive promoters. References: 1, Nicotiana tabacum, Uehlein et al. (2003); 2, Nicotiana tabacum, Flexas et al. (2006); 3, Nicotiana tabacum, Sade et al. (2010); 4, Nicotiana tabacum, Kawase et al. (2013); 5, Arabidopsis thaliana, Sade et al. (2014); 6, Glycine max, Zhou et al. (2014); 7, Oryza sativa, Li et al. (2018); 8, Oryza sativa, Xu et al. (2019); 9, Oryza sativa, Nada and Abogadallah (2020); 10, Oryza sativa, Hanba et al. (2004); 11, Arabidopsis thaliana, Lin et al. (2007); 12, Solanum lycopersicum, Wang et al. (2017); 13, Populus tremula × Populus alba, Ranganathan et al. (2017); 14, Nicotiana tabacum, Martins et al. (2017); 15, Nicotiana tabacum, Uehlein et al. (2008); 16, Oryza sativa, Ding et al. (2016); 17, Populus tremula × Populus alba, Bi et al. (2015); 18, Arabidopsis thaliana, Heckwolf et al. (2011); 19, Arabidopsis thaliana, Li et al. (2015); 20, Arabidopsis thaliana, Martre et al. (2002); 21, Arabidopsis thaliana, Ceciliato et al. (2019); 22, Nicotiana tabacum, Ding et al. (2004); 23, Nicotiana tabacum, Aharon et al. (2003).