Fig. 4: Fluorescence intensities (counts s−1) of Zn and other elements (Ca, Mn, Fe, P, and S) in the micro-XRF maps of leaves.

Fluorescence intensities (counts s-1) of Zn and other elements (Ca, Mn, Fe, P and S) in the micro-XRF mapping of leaves. The lines at the top, bottom and middle of the box correspond to the 75th, 25th and 50th percentiles (median), respectively. Whiskers indicated ± standard deviation. The dots indicated the mean values. The variance was performed on the data sets by Fisher’s least significant difference test (p < 0.05 for significant and p < 0.01 for very significant) for each set of corresponding data. Un, untreated; SC, stomatal closure; HTD, high trichome density; MTD, medium trichome density; LTD, low trichome densities