Biosynthesis of monoterpene scent compounds in roses

• Autores: Jean-Louis Magnard, Aymeric Roccia, Jean-Claude Caissard
• Localización: Science, ISSN 0036-8075, Vol. 349, Nº 6243, 2015, págs. 81-83
• Idioma: inglés
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• Resumen

  • 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 roses. The RhNUDX1 protein shows geranyl diphosphate diphosphohydrolase activity in vitro and supports geraniol biosynthesis in planta.