An Importin Protein SlIMPA3 Interacts with SlLCD1 and Regulates Tomato Fruit Ripening

A nuclear-localized cysteine desulfhydrase, LCD1, plays a crucial role in mediating endogenous hydrogen sulfide production in tomatoes. However, the mechanism underlying the nuclear localization of SlLCD1 is not yet fully understood. In this study, it was found that SlLCD1 specifically interacted with nuclear import receptor importin α3 (SlIMPA3). Furthermore, it was demonstrated that silencing SlIMPA3 through virus-induced gene silencing or introducing mutations in