TY - JOUR AU - Bythell-Douglas, Rohan AU - Rothfels, Carl J. AU - Stevenson, Dennis W. D. AU - Graham, Sean W. AU - Wong, Gane Ka-Shu AU - Nelson, David C. AU - Bennett, Tom PY - 2017 DA - 2017/06/29 TI - Evolution of strigolactone receptors by gradual neo-functionalization of KAI2 paralogues JO - BMC Biology SP - 52 VL - 15 IS - 1 AB - Strigolactones (SLs) are a class of plant hormones that control many aspects of plant growth. The SL signalling mechanism is homologous to that of karrikins (KARs), smoke-derived compounds that stimulate seed germination. In angiosperms, the SL receptor is an α/β-hydrolase known as DWARF14 (D14); its close homologue, KARRIKIN INSENSITIVE2 (KAI2), functions as a KAR receptor and likely recognizes an uncharacterized, endogenous signal (‘KL’). Previous phylogenetic analyses have suggested that the KAI2 lineage is ancestral in land plants, and that canonical D14-type SL receptors only arose in seed plants; this is paradoxical, however, as non-vascular plants synthesize and respond to SLs. SN - 1741-7007 UR - https://doi.org/10.1186/s12915-017-0397-z DO - 10.1186/s12915-017-0397-z ID - Bythell-Douglas2017 ER -