KAR2

• CAT Number: H000085
• CAS Number: 857054-03-6
• Molecular Formula: C7H4O3
• Molecular Weight: 136.106
• Purity: ≥95%
• Synonyms: 2H-furo[2,3-c]pyran-2-one
• Storage: Store at 0-8 °C
• IUPAC Name: furo[2,3-c]pyran-2-one
• InChI: InChI=1S/C7H4O3/c8-7-3-5-1-2-9-4-6(5)10-7/h1-4H
• InChIKey: OBHRCUWVUFZNMG-UHFFFAOYSA-N
• SMILES: C1=COC=C2C1=CC(=O)O2

KAR2(CAS 857054-03-6) is a seed germination stimulant that has been found in plant-derived smoke. It induces germination of A.thaliana, L. sativa, E. penduliflora, and S. orbiculatum seeds in a concentration-dependent manner. KAR2 (1 μM) increases expression of the gibberellin (GA) biosynthesis genes GA3ox1 and GA3ox2 and the GA4-responsive gene CP1 in A. thaliana seeds.

Reference

1.Nelson, D.C., Riseborough, J.-<wbr style="box-sizing: border-box;" />A., Flematti, G.R., et al. Karrikins discovered in smoke trigger arabidopsis seed germination by a mechanism requiring gibberellic acid synthesis and light. Plant Physiol. 149(2), 863-873 (2009).

2. Flematti, G.R., Ghisalberti, E.L., Dixon, K.W., et al. Identification of alkyl substituted 2H-<wbr style="box-sizing: border-box;" />furo[2,3-<wbr style="box-sizing: border-box;" />c]pyran-<wbr style="box-sizing: border-box;" />2-<wbr style="box-sizing: border-box;" />ones as germination stimulants present in smoke. J. Agric. Food Chem. 57(20), 9475-9480 (2009).
3. Flematti, G.R., Goddard-<wbr style="box-sizing: border-box;" />Borger, E.D., Merritt, D.J., et al. Preparation of 2H-<wbr style="box-sizing: border-box;" />furo[2,3-<wbr style="box-sizing: border-box;" />c]pyran-<wbr style="box-sizing: border-box;" />2-<wbr style="box-sizing: border-box;" />one derivatives and evaluation of their germination-<wbr style="box-sizing: border-box;" />promoting activity. J. Agric. Food Chem. 55(6), 2189-2194 (2007).