“…Several putative auxin transporters were detected and characterized. Among those the members of the PIN-FORMED protein family (PIN proteins) are regarded as important carriers acting in the efflux of auxin from cells (for reviews, see Za zímalová et al, 2010;Grunewald and Friml, 2010;Geisler et al, 2014;Pan et al, 2015;Bennett, 2015;Strader and Zhao, 2016). Some PIN family members, such as PIN1, 2, 3, 4, and 7, are localized in the plasma membrane (PM) and determine developmental processes by regulating the distribution of auxin and its local accumulation in the plant body (K re cek et al, 2009;Vanneste and Friml, 2009;Grunewald and Friml, 2010).…”