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Table 1 Plasma membrane aquaporins examined in this study and their H2O2 permeability in yeast. The effect of exogenous H2O2 application to the roots on the gene expression of the individual PIPs was reported by Hooijmaijers et al. [1] for a concentration of 1 mM in a hydroponic solution. 1 Dynowski et al. (2008) [2], 2 Hooijmaijers et al. (2012) [1], 3 Wang et al. (2020) [11], 4 Groszmann et al. (2021) [3]

From: Plasma membrane aquaporins of the PIP1 and PIP2 subfamilies facilitate hydrogen peroxide diffusion into plant roots

Aquaporin

H2O2 permeability

Effect of exogenous H2O2

AtPIP1;1

None1,2,3/High4

No effect

AtPIP1;2

None2,3/High4

No effect

AtPIP1;3

None2,3/High4

No effect

AtPIP2;2

High2/Medium3,4

Downregulated in roots

AtPIP2;3

Low2/Medium3,4

Downregulated in roots

AtPIP2;4

High1,2,3/Medium4

Downregulated in roots

AtPIP2;5

High2/Medium3,4

Downregulated in roots

AtPIP2;6

Low2,4/Medium3

No effect