Figure 7.

Riboflavin, folic acid and pyridoxal phosphate profile upon B. cinerea infection in non-mycorrhizal and mycorrhizal plants either normally fertilized or under a transient N depletion. 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. Riboflavin and folic acid were identified using chemical standards, whereas pyridoxal phosphate was identified using its fragmentation spectrum. Leaf material from 3 individual plants was pooled for each treatment combination. Box plots represent the means for three independent experiments with two technical replicates. Different letters indicate statistically significant differences (ANOVA, Fisher's Least Significant Difference (LSD) test; P < 0.05, n = 6).