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. 2020 Apr 14;16(6):1157–1158. doi: 10.1080/15548627.2020.1752981

Figure 1.

Figure 1.

A proposed working model of COST1 function. Under normal growth conditions, COST1 inhibits autophagy and promotes plant growth (green lines). During drought stress, COST1 is degraded by both the 26S-proteasome and autophagy pathways, releasing its inhibition of autophagy and conferring stress tolerance (black arrows).