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. 2013 Jul 12;200(3):796–807. doi: 10.1111/nph.12405

Figure 4.

Figure 4

Imaging of plant roots in situ. (a) Optical micrograph of a wheat (Triticum aestivum) root growing within the microcosm. (b) Scanning electron micrograph (SEM) of a polished transverse section showing a plant root (arrow) within the embedded soil core. (c) SEM of a plant root within the embedded soil core at higher magnification, revealing the cellular root structure of inner cortical cells. Root hairs and epidermal cells cannot easily be seen in this image. Boxes indicate cellular regions typically analysed by nano-scale secondary ion mass spectrometry (NanoSIMS) (as seen in Fig. 6 and Supporting Information Fig. S4). Bars: (a) 400 μm; (b) 200 μm; (c) 20 μm.