Figure 2.

Emission of Methyl Benzoate and BAMT Activity in Snapdragon Flowers during Two Normal Light/Dark Cycles.

(A) Rhythmic emission of methyl benzoate from 3- and 4-day-old snapdragon flowers during a 48-hr period under normal light/dark conditions.

(B) BAMT activity in upper and lower petal lobes of 3- and 4-day-old snapdragon flowers during a 48-hr period. Maximum BAMT activity value, equal to 100%, was 6 pkat/flower or 23.7 pkat/g fresh weight.

An increase of the maximum amplitude in 4-day-old flowers relative to 3-day-old flowers reflects the developmental changes in methyl benzoate emission (A) and BAMT activity (B) (Dudareva et al., 2000). Shaded and light areas correspond to dark and light, respectively. Each graph represents the average of three independent experiments. Standard deviations are indicated by vertical bars.