Figure 1
Optical images and concentration (µg g−1) spatial distribution of Cu, Mn, Pb, Fe and Zn in T. latifolia L. root sections in the tip and the middle of roots collected in 2010 and 2011. ep: epidermis; ex: exodermis; co: cortex; en: endodermis; ca: Casparian strip; va: vascular tissues [(a)–(d) optical images of root tissue sections; (e)–(h) spatial distribution of Zn; (i)–(l) spatial distribution of Cu; (m)–(p) spatial distribution of Mn; (q)–(t) spatial distribution of Pb; (u)–(x) spatial distribution of Fe]. |