Plant growth, development, and response to the environment are mediated by a group of small signaling molecules named hormones. Plants regulate hormone response pathways at multiple levels, including biosynthesis, metabolism, perception, and signaling. In addition, plants exhibit the unique ability to spatially control hormone distribution. In recent years, multiple transporters have been identified for most of the plant hormones. Here we present an updated snapshot of the known transporters for the hormones abscisic acid, auxin, brassinosteroid, cytokinin, ethylene, gibberellin, jasmonic acid, salicylic acid, and strigolactone. We also describe new findings regarding hormone movement and elaborate on hormone substrate specificity and possible genetic redundancy in hormone transport and distribution. Finally, we discuss subcellular, cell-to-cell, and long-distance hormone movement and local hormone sinks that trigger or prevent hormone-mediated responses.

植物的生长、发育和对环境的反应是由一组称为激素的小信号分子介导的。植物在多个层面上调节激素反应途径，包括生物合成、代谢、感知和信号传导。此外，植物表现出独特的空间控制激素分布的能力。近年来，大多数植物激素已鉴定出多种转运蛋白。在这里，我们提供了激素脱落酸、生长素、油菜素类固醇、细胞分裂素、乙烯、赤霉素、茉莉酸、水杨酸和独脚金内酯的已知转运蛋白的最新快照。我们还描述了有关激素运动的新发现，并详细阐述了激素底物特异性以及激素运输和分布中可能的遗传冗余。最后，我们讨论亚细胞、细胞间和长距离激素运动以及触发或阻止激素介导反应的局部激素汇。