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The role of karrikins in revegetation after a fire. A bushfire generates smoke and ash containing karrikins (upper panel). After the fire karrikins are present on the soil surface (middle panel). After the first rains, the karrikins stimulate germination of the soil seed bank and the growth of new plants, in this case Anthocercis littorea (lower panel). Top and middle photographs with permission from Vanessa Westcott (Bush Heritage Australia) and bottom photograph from the authors
