Figure 6: Phytometabolomes are modulated by mycorrhization species-specifically.
From: High specificity in plant leaf metabolic responses to arbuscular mycorrhiza
(a) Modulated features as coloured symbols outside the cutoff-lines in volcano plots (Mann–Whitney U-test: unadjusted P<0.05; fold change <0.67 for decrease in metabolite pool size, left; >1.5 for increase in metabolite pool size, right). Crosses indicate significance after adjustment of the P values (FDR=0.05) of the Mann–Whitney U-tests. The feature numbers of de- versus increased features were compared (χ2-tests; **P<0.01, ***P<0.001). (b) Average linkage hierarchical cluster heatmap (Pearson correlation) of 975 features modulated in minimum one species. BDL, below detection limit. (c) The plant metabolic pathway map displaying mycorrhiza-mediated changes of different metabolites. Not all reactions and reaction products are shown (dashed arrows, intermediates omitted), the full names are given on left-hand side and in Table 3, the heatmap strips (fold changes) are colour coded. Asterisks indicate significance (Mann–Whitney U-tests; *P<0.05, **P<0.01, ***P<0.001; blue, according to unadjusted P; red, adjusted P), borders around the asterisks indicate fold changes <0.67 or >1.5. (a–c) Pl, Plantago lanceolata; Pm, Plantago major; Vc, Veronica chamaedrys; Mt, Medicago truncatula; Pa, Poa annua. Means of n=9 to 10 biological replicates.
