The secret of rose fragrance

Scientists who discovered RhNUDX1 genes are partly responsible for creating the delicate fragrance of roses.

Discover the secret of rose fragrance

" This finding can help restore the classic fragrance of hybrid roses. We hope to help breeders restore more fragrances," NewScientist said Monday. Sylvie Baudino, research leader at Lyon University, France.

Gene RhNUDX1 creates the fragrance of roses.(Photo: Cheziere / Université Jean Monnet)

Baudino and colleagues compared the genomes of two very different rose varieties, including Papa Meilland roses with a rich aroma and Rouge Meilland with a light fragrance. Papa Meilland roses produce a group of high-grade organic compounds called monoterpene , which produces many famous natural scents, such as peppermint and lemongrass.

Papa Meilland rose petals are fragrant with a special gene called RhNUDX1 . RhNUDX1 gene is also present in other organisms, helping cells produce an enzyme that treats stress. The researchers believe that this enzyme is responsible for the monoterpene production of roses.

The research team removed the RhNUDX1 gene in a rose line. They found that new flowers hardly produce monoterpene compounds. In another experiment, the team bred roses Old Blush rich in aromatic substances and rose wichurana rose less fragrant. The results showed that the progeny produced the enzyme mentioned above, the blooming flowers have a sweet scent, while others do not produce enzymes without odor.

"For me, a person who made a long-lasting fragrance, the flower doesn't smell like it is dead. RhNUDX1 can bring what we have lost, " said Martin Gras, a French perfumer.