Dear Editor,Strigolactones (SLs) are plant hormones that regulate different aspects of plant development.In roots, SLs are involved in the regulation of lateral-root formation and they induce root-hair elongation (Kapulnik et al., 2011).They are also exuded from plant roots and act as stimulators of parasitic and symbiotic (e.g., arbuscular mycorrhizae) interactions.SLs are perceived in plants by a specific reception system that consists of several interacting proteins (reviewed by Al-Babili and Bouwmeester, 2015).