Figure 2From: Rapid metabolic profiling of Nicotiana tabacum defence responses against Phytophthora nicotianae using direct infrared laser desorption ionization mass spectrometry and principal component analysisIR-LDI-oTOF MS analysis of metabolites (time-profiles). Metabolic time-profiles of selected metabolites in Nicotiana tabacum (cv. SNN) samples that were subjected to different treatments: (I) infected, (P) placebo, and (B) blank (for detailed explanation of the nomenclature employed, see text). IR-LDI MS signal intensities of the molecular ions (see Table 1 for ion type) were normalized to the value obtained at 1 hpi. THB (tetrahydrobiopterin); γ-LA (γ-linolenic acid); HOO-γ-LA (peroxidated-γ-linolenic acid).Back to article page