Fig. 5
From: ‘Candidatus Phytoplasma solani’ interferes with the distribution and uptake of iron in tomato
Effects of phytoplasma infection and Fe starvation on Fe distribution in the leaf midrib and surrounding parenchyma. a-d Perls’-DAB staining on 7 μm-thick transversal sections of leaf tissues in the phloem area of healthy (H/+Fe) plants (a), phytoplasma-infected (I/+Fe) plants (b), Fe-starved (H/−Fe) plants (c), and phytoplasma-infected/Fe-starved (I/−Fe) plants (d). e-h Longitudinal sections. Fe dots (arrow heads) are visualized in phloem cells of healthy and phytoplasma-infected/Fe-sufficient plants. i-n transversal sections of the xylem area. Fe dots are visualised only in H/+Fe plants. ph: phloem; x: xylem; arrowheads indicate Fe dots. Scale bars: 10 μm