Review: Plant hormone transporters: what we know and what we would like to know

Hormones are signaling molecules, and in most (but not all) cases part of their function is to convey information from one cell or tissue to another, sometimes from cell-to-cell and sometimes through vascular tissues. Park et al.  review our current state of understanding of transporters for diverse plant hormones, starting with auxin and extending through ABA, cytokinins, gibberellins, strigolactones, jasmonates, salicylic acid, and ethylene (or more accurately, its precursor ACC), with brassinosteroids, FT and small peptide hormones mentioned briefly. Unresolved questions including the regulation of the transporters are discussed. This article provides a nice overview of the similarities and differences between hormone transport strategies. (Summary by Mary Williams) BMC Biol.  10.1186/s12915-017-0443-x