Figure 5.

Key metabolites involved in osmoadaptation in cowpea during a drought-rewatering course. (A) Clustering used complete agglomeration and Manhattan distance. Each comparison is abbreviated and shown as a single column. The first two letters in the abbreviation indicate the treatments: SC = log(stress/control), RS = log(rewater/stress), and RC = log(rewater/control). The middle two letters indicate cultivars: PL for Pinhel leaves, PR for Pinhel roots, FL for Fradel leaves, and FR for Fradel roots. D indicates the duration of drought stress without rewatering: D6 and D12 for 6 and 12 days, respectively. The complete names for secondary metabolites can be retrieved from Supplementary Table 3. (B) Plots of the six drought-responsive compounds highlighted by all statistical tests, with five clustered in the purple box in the heatmap (n = 4 or 6; error bars = SD).