Fig. 3.
From: What are karrikins and how were they ‘discovered’ by plants?
Stimulation of seed germination by cyanohydrins. Cyanohydrins such as glyceronitrile, which was discovered in smoke, are able to stimulate seed germination as a result of hydrolysis to release cyanide. The red and green kangaroo paw Anigozanthos manglesii is an example of one fire-follower that responds to cyanohydrins but not to karrikins. Photograph from the authors