Fig. 4
Virus induced PsPIP2;1 silencing led to reductions in root hydraulic conductivities. a Representative pressure-to-flow relationship measured in roots of control plants and VIGS-PsPIP2;1 plants. J v represents the rate of exuded sap flow through roots. b Root hydraulic conductivity at organ level. c Typical hydrostatic relaxation curves as measured by a cell pressure probe on root cells. d Root hydraulic conductivity at cell level. Values are mean ± SD (n = 6–9 plants or 30–60 cells). Asterisks (*) represent a significant difference between control plants and VIGS-PsPIP2;1 plants at P < 0.05