香りの科学

A study compares volatile compounds and gene activity across flowering stages in a multi-petaled jasmine, exploring candidate contributors to its fragrance and the mechanisms behind them.

Comparing a wild rose’s petals, stamens, and pistils reveals differences in prominent scent compounds. This study also explores spatial and temporal changes through gene activity.

Does the evolution of weaker floral scent occur through the loss of scent-producing genes? A comparison of 30 Costus species suggests that flowers pollinated by hummingbirds may retain the genes while reducing their activity.

What changes when yellow lines arise in red flowers pollinated by hummingbirds? A study of two Mimulus species found changes not only in color but also in scent and shape. Bees visited yellow flowers more often, but the fit between bee and flower was still incomplete.

A study in white-flowered Hedychium examines small RNAs that regulate scent production, introducing mechanisms that connect them to plant hormones and biosynthetic enzymes.

A study of a fruity-scented chrysanthemum explores the mechanism linking plant hormone signals to scent-compound synthesis. It also examines the difference between when compounds are produced and when they are released.

Two enzymes identified in petunia produce a scent compound and connect to salicylic-acid synthesis. Their cellular locations offer further insight into scent and defense metabolism.

Can scent reveal whether hidden pollen remains? A comparison of buzz-pollinated Solanum flowers explores whether chemical differences could provide information to visiting insects.

Muscadine grapes include cultivars bearing female flowers and others bearing hermaphroditic flowers with both stamens and pistils. A study of 16 genotypes found differences in compounds extracted from their flowers. Together with hand-pollination results, the findings were used to consider how flower shape, scent, and pollen rewards relate to pollination.