title: Effect of temperature on the floral scent emission and endogenous volatile profile of Petunia axillaris.
abstract: The floral scent emission and endogenous level of its components in Petunia axillaris under different conditions (20, 25, 30, and 35 degrees C) were investigated under the hypothesis that floral scent emission would be regulated by both metabolic and vaporization processes. The total endogenous amount of scent components decreased as the temperature increased, the total emission showing a peak at 30 degrees C. This decrease in endogenous amount was compensated for by increased vaporization, resulting in an increase of floral scent emission from 20 degrees C to 30 degrees C. The ambient temperature differently and independently influenced the metabolism and vaporization of the scent compounds, and differences in vapor pressure among the scent compounds were reduced as the temperature increased. These characteristics suggest the operation of an unknown regulator to change the vaporization of floral scent.
authors.affiliation: Graduate School of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan.
authors.forename: Masanori
authors.initials: M
authors.lastname: Sagae
authors.forename: Naomi
authors.initials: N
authors.lastname: Oyama-Okubo
authors.forename: Toshio
authors.initials: T
authors.lastname: Ando
authors.forename: Eduardo
authors.initials: E
authors.lastname: Marchesi
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Nakayama
mesh_terms: D035264:Flowers / Q000737:chemistry / Q000502:physiology*; D009812:Odorants; D032306:Petunia / Q000737:chemistry / Q000502:physiology*; D010649:Phenylalanine / Q000032:analysis; D011312:Pressure; D013696:Temperature; D013816:Thermodynamics; D014835:Volatilization
chemical_list: D010649:Phenylalanine