Аннотация:Significance Unlike in animals, postembryonic development in plants is highly flexible and allows them to modulate their growth patterns in response to external signals or as part of endogenous developmental programs. Differential cell elongation is a widely used developmental program used in plants to respond to external and endogenous signals. Asymmetric distribution of the plant hormone indole-acetic acid (auxin) mediated by plasma membrane localized auxin carriers is crucial for differential cell elongation. Our results identify distinct mechanisms for trafficking of auxin influx and efflux carriers from the post-Golgi compartment trans -Golgi network to the plasma membrane during differential cell elongation in which the trans -Golgi network–localized ECHIDNA protein plays a key role by acting at the level of secretory vesicles genesis.
