SEARCH FOR NEW CHEMICALS WHICH MODIFY FLOWER OPENING AND SENESCENCE IN CUT FLOWERS OF SPRAY CARNATIONS
We searched for new chemicals which modify flower opening and senescence using cut carnation flowers as a model ornamental, and found three chemicals with such activities; xyloglucan oligosaccharides (XGO), palatinose and 2,4-pyridinedi- carboxylic acid (PDCA). XGO enhanced flower opening, probably by acting as a substrate for xyloglucan endo transglycosylase and causing enhanced slippage of cellulose microfibrils, promoting expansion growth of petal cells. Palatinose did so probably by supplying glucose and fructose after its hydrolysis by α-glucosidase. PDCA prolonged flower vase life by acting as a competitive inhibitor of ACC oxidase with respect to ascorbate, resulting in reduced ethylene production.
Satoh, S. (2015). SEARCH FOR NEW CHEMICALS WHICH MODIFY FLOWER OPENING AND SENESCENCE IN CUT FLOWERS OF SPRAY CARNATIONS. Acta Hortic. 1088, 297-302
Dianthus caryophyllus, petal cell growth, ethylene biosynthesis, α-glucosidase, xyloglucan oligosaccharides, palatinose, 2,4-pyridinedicarboxylic acid