Figure 1. Comparison of nutrient levels in leaves before and during senescence.
A) Levels of elements in Arabidopsis leaves (ecotype Ler) are shown at 27 and 37 DAG. Three samples were analyzed for each timepoint. The distal 15 mm of leaves, approximately the upper half, was ana- lyzed. The nutrient analyzed is indicated in the upper right corner of each graph. B) A summary of the percent reduction of the elements tested is shown to the right. Percent reduction was calculated by dividing the difference between the average levels at 27 and 37 DAG by the average level at 27 DAG. Arabidopsis leaves at 27 and 37 DAG (representative of those analyzed) are shown in the inset photograph. The white bar repre- sents 1 cm.