Expression of LOX and HPL genes in Koshu and Pinot Noir berries.

(A) Conversion of C18:3 into (Z)-hex-3-enal via the LOX pathway. LOX, lipoxygenase. HPL, hydroperoxide lyase. (B) Transcription of genes encoding LOX and HPL in berry skins. Berry samples were collected at two weeks post véraison (V+2w) and at harvest (H). Total RNA was isolated from berry skins and subjected to real-time RT-PCR analysis. Data are shown as means ± standard deviation for five independent samples. *p < 0.05 between Koshu and Pinot Noir skins.