Biosynthesis of monoterpene scent compounds in roses

J.-L. Magnard, A. Roccia, J.-C. Caissard, P. Vergne, P. Sun, R. Hecquet, A. Dubois, L. Hibrand-Saint Oyant, F. Jullien, F. Nicole, O. Raymond, S. Huguet (+9 others)
2015 Science  
The scent of roses (Rosa x hybrida) is composed of hundreds of volatile molecules. Monoterpenes represent up to 70% percent of the scent content in some cultivars, such as the Papa Meilland rose. Monoterpene biosynthesis in plants relies on plastid-localized terpene synthases. Combining transcriptomic and genetic approaches, we show that the Nudix hydrolase RhNUDX1, localized in the cytoplasm, is part of a pathway for the biosynthesis of free monoterpene alcohols that contribute to fragrance in
more » ... ute to fragrance in roses. The RhNUDX1 protein shows geranyl diphosphate diphosphohydrolase activity in vitro and supports geraniol biosynthesis in planta.
doi:10.1126/science.aab0696 pmid:26138978 fatcat:iu4d6g33brhhxiudrxfpriytey