Production of the seed germination stimulant karrikinolide from combustion of simple carbohydrates |
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| Authors: | Flematti Gavin R Scaffidi Adrian Dixon Kingsley W Smith Steven M Ghisalberti Emilio L |
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| Institution: | School of Biomedical, Biomolecular and Chemical Sciences, The University of Western Australia , Crawley, WA 6009, Australia. flematti@uwa.edu.au |
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| Abstract: | The naturally occurring seed germination stimulant karrikinolide is formed from the combustion of plant material including cellulose. It has previously been reported that combustion of simple carbohydrates such as d-glucose does not produce extracts containing karrikinolide. Moreover, it was reported that extracts with germination-promoting ability could be obtained only by combustion of simple carbohydrates in the presence of amino acids such as l-glycine. By employing a (13)C-labeled karrikinolide to physically quantify natural karrikinolide, we now show that it is produced from combustion of simple carbohydrates in similar amounts regardless of whether l-glycine is present or not. The addition of l-glycine appears to be beneficial in reducing the inhibitory effect of smoke extracts and provides a greater concentration range for effective germination-promoting activity. |
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