Distinguishable root plaque on root surface of Potamogeton crispus grown in two sediments with different nutrient status

Ethylene is critical to the maintenance of primary root growth and Fe homeostasis under Fe stress in Arabidopsis

“…However, roots were washed gently with deionized water in this study, and it has been reported that only the application of dithionite-citrate-bicarbonate (DCB) thoroughly removes iron plaques ( McLaughlin et al , 1985 ). One previous report showed that, for root surfaces without iron plaques, Fe was difficult to detect by SEM-EDX at the surface, although the total Fe content (DCB-extracted) was high in roots ( Mi et al , 2013 ), similar to the present SEM-EDX result ( Supplementary Fig. S6A ).…”

“…Roots were washed gently with deionzied water three times, and the materials formed were observed on drying roots by SEM (Hitachi S4200, operated at 15kV). The elemental composition of the materials on the roots was examined by EDX attached to the SEM, according to the method of Mi et al (2013) .…”