Figure 4 | Scientific Reports

Figure 4

From: High-resolution Imaging of pH in Alkaline Sediments and Water Based on a New Rapid Response Fluorescent Planar Optode

Figure 4

pH distribution patterns in the rhizopshere of Vallisneria spiralsv.

(A) Roots of Vallisneria spiralsv visible through the side of the rhizobox. The three white dashed lines (a,b,c) represents the position of the extracted profiles, presented in (C,D). (B) Corresponsing 2D pH distribution around the roots fromVallisneria spiralsv taken after 4 h in the light. The images size is 20 mm × 56 mm. (C) Two profiles (a,b) of pH distribution across the sediment and water interface (SWI). The horizontal dashed linerepresents the SWI. (D) pH distribution across two single roots from one profile (c), with the rhizosphere zones indicated as shade areas.

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