Accumulation of diterpenoid phytoalexins in NJH12 and R109 after inoculation with Xoo strain PXO79 at the booting stage.

FW, fresh weight; Data represent the means (three replicates) ± standard deviation. MA, MB, PA, PB, PC and PE represent momilactone A, momilactone B, phytocassane A, phytocassane B, phytocassane C and phytocassane E, respectively. Phytocassane D was induced with a similar induction mode, but all values were lower than the other phytocassanes shown (data not shown).