Glycinebetaine(GB) is also one of the most important chemical which is used to combat salt stress in plants.Application of GB enhanched Photo system II(PSII) activity which is affected drastically under salt stress and synthesis of D1 protein is
also enhanced.
Reference: Plant, Cell and Environment (2011) 34, 1–20;doi: 10.1111/j.1365-3040.2010.02232.x;