FIGURE 8.

A simplified model on the possible roles of autophagy in salinity stress tolerance. Autophagy is positively involved in four aspects of plant adaptation to salt stress: sodium sequestration into the vacuole; elimination of oxidized proteins; recycling of free amino acids required for protein synthesis; and production of compatible osmolytes such as soluble sugars. Black lines indicate known pathways/regulations; solid red lines indicate relatively direct regulations identified in this study; dashed red lines indicate regulations identified in this study that are likely indirect.