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Ethylene and nitric oxide (NO) act as endogenous regulators during leaf senescence. Levels of ethylene or its precursor 1‐aminocyclopropane‐1‐carboxylate acid (ACC) depend on the activity of ACC synthases (ACS), and NO production is controlled by NO‐associated 1 (NOA1). However, the integration mechanisms of ACS and NOA1 activity still need to be explored during leaf senescence.
Here, using experimental...