Resistant rootstocks mitigate ionic toxicity with beneficial effects for growth and photosynthesis in grapevine grafted plants under salinity

•The Na+ exclude trait from shoot is associate to salt-resistance in vine rootstocks.•Salt-sensibility of 1103P and SO4 rootstocks occurred with a higher Na+ levels.•Lower Na+ level was associate to salt-resistance of IAC 313 and IAC 572 rootstocks.•The higher K+/Na+ ratio was associated with salt-resistance in IAC 313 and IAC 572.•The grafted plants on the IAC 313 and IAC 572 rootstocks were more salt-resistance.