Figure 6.

Profiling of amino acids showing alterations upon B. cinerea infection in non-mycorrhizal and mycorrhizal plants either normally fertilized or under a transient N depletion. Signal identity was confirmed by using chemical standards. Non-mycorrhizal infected tomato plants (BB) and mycorrhizal infected tomato plants (BBAM); (−N) plants exposed to 48 h of nitrogen depletion and fungal inoculation at 72 hpi. Leaf material from 3 individual plants was pooled for each treatment combination. Box plots represent the means for four independent experiments. Different letters indicate statistically significant differences (ANOVA, Fisher's Least Significant Difference (LSD) test; P < 0.05, n = 4).