Figure 1.

A short timeline of the auxin transport history. Key findings in auxin transport research that are discussed in this article are highlighted and correlated with the main responsible researcher and key publications; exemplary pictures are added for illustration purposes. Please note that due to space restrictions, some topics are only assigned to a single person, and acknowledge that major findings were conducted by several groups. This holds true for the formulation of the chemiosmotic hypothesis that was suggested independently by at least two groups Rubery and Sheldrake (1973), Raven (1975), and summarized later by Goldsmith (1977). Sincere apologies to all colleagues from the auxin transport field that contributed and are not included here. The abcb1 abcb19 mutant picture is taken from Bailly et al. (2006), while the PIN reflux model is taken from Wabnik et al. (2011).