Fig. S10.

Sucrose increases leucoplast but not chloroplast stromule frequency. Representative images of stromule frequency with and without sucrose treatment in A. thaliana epidermal cells. Stromule frequency is similar in chloroplasts (found in guard cells in the epidermis) without sucrose treatment (A) or with sucrose treatment (B). Sucrose treatment increases stromule frequency in leucoplasts (D) compared with control (C). Plastids and stromules are labeled with stromal GFP (green). Some stromules are indicated by white arrows. (Scale bars: 10 μm.)