Table 1. The transmembrane diffusion patterns of some reactive species.

Reactive species	Diffusion patterns	Channels/Transporters
NO	Passive diffusion/channels	AQP 1[117]
H2O2	Channels	AQP 1 [113], 3 [114], 8 [115], 9 [116]
NO2-	Transporters	NRT 2 [109]
NO3-	Channels/transporters	AQP 6 [110], NRT 1 [109], NRT 2 [109]
ONOO-	Channels	Unknown anion channels [108]