School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, 69978, Israel.
School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, 69978, Israel.
Curr Opin Plant Biol. 2021 Oct;63:102055. doi: 10.1016/j.pbi.2021.102055. Epub 2021 Jun 5.
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、发育和对环境的响应是由一组被称为激素的小分子信号转导物质介导的。植物在多个层次上调节激素反应途径，包括生物合成、代谢、感知和信号转导。此外，植物还表现出独特的空间控制激素分布的能力。近年来，大多数植物激素的多种转运蛋白已经被鉴定出来。在这里，我们呈现了一个关于植物激素脱落酸、生长素、油菜素内酯、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。我们还描述了关于激素运动的新发现，并详细阐述了激素运输和分布中可能存在的激素底物特异性和遗传冗余。最后，我们讨论了细胞内、细胞间和长距离的激素运动以及引发或阻止激素介导反应的局部激素汇。
