Relocalization of the PIN1 Auxin Efflux Facilitator Plays a Role in Phototropic Responses

Abstract

Recently, we reported that the basal localization of the PIN1 auxin efflux facilitator protein is disrupted in hypocotyls of Arabidopsis mdr ( pgp ) mutants grown in the dark or unidirectional light ([Noh et al., 2003][1]). Molecular genetic and physiological evidence indicates that PIN1 is required