Biosynthesis of floral scent 2-phenylethanol in rose flowers.
Plants emit chemically diverse volatile compounds for attracting pollinators or putting up a chemical defense against herbivores. 2-Phenylethanol (2PE) is one of the abundantly emitted scent compounds in rose flowers. Feeding experiments with l-[(2)H8]phenylalanine into rose flowers and subsequent analysis using gas chromatography-mass spectrometry analysis revealed the hypothetical biosynthetic intermediates to [(2)H8]-2PE, and the biochemical and genetic analyses elucidated the principal pathway to [(2)H8]-2PE. We recently found season-specific 2PE pathway producing [(2)H7]-2PE from l-[(2)H8]phenylalanine. This is a unique example where the dominant pathway to a specific compound changes with the seasons. This review focuses on the biosynthesis of floral volatiles and their regulation to adapt to the changes in the environment.
a Graduate School of Science and Technology , Shizuoka University , Shizuoka , Japan.
Hiroshi
H
Hirata
b Graduate School of Agriculture , Shizuoka University , Shizuoka , Japan.|c Research Institute of Green Science and Technology , Shizuoka University , Shizuoka , Japan.
Toshiyuki
T
Ohnishi
a Graduate School of Science and Technology , Shizuoka University , Shizuoka , Japan.|d Graduate School of Engineering , Shizuoka University , Hamamatsu , Japan.
Naoharu
N
Watanabe
D035264:Flowers / Q000378:metabolism*; D009812:Odorants; D010626:Phenylethyl Alcohol / Q000737:chemistry / Q000378:metabolism*; D027826:Rosa / Q000378:metabolism*; D012621:Seasons
D010626:Phenylethyl Alcohol
2-phenylethanol; biosynthesis; rose flower; seasonal change; stable isotope