Karrikin 2, found in smoke water extracts, acts as a key germination trigger for many species from fire-prone Mediterranean climates, but is also active in plants from temperate regions. Karrikin 2 is more active than karrikinolide and KAR3 in promoting the germination response of Arabidopsis (PD Ler ecotype) seeds, at concentrations as low as 10 nM.
| Molecular Formula | C7H4O3 |
| References | Flematti GR (2009) Identification of alkyl substituted 2H-furo[2,3-c]pyran-2-ones as germination stimulants present in smoke. J. Agric. Food Chem. 57:9475 |
