Figure 6From: Rapid metabolic profiling of Nicotiana tabacum defence responses against Phytophthora nicotianae using direct infrared laser desorption ionization mass spectrometry and principal component analysisPutative biomarkers for the HR of tobacco ( SNN ). Metabolic time-profiles (determined by direct IR-LDI-oTOF MS) of two, as yet unidentified metabolites exhibiting m/z values of 431.222 and 269.170 that exhibit a strong correlation with the biological response index (BRI, f(PC1,PC2)) and could be employed for monitoring the defence response of N. tabacum (cv. SNN) toward P. nicotianae infection.Back to article page