Fig. 2

The chloroplast ultrastructure of mesophyll cells in C. multipinnata and C. panzhihuaensis immediately following heat stress. a, b and c show the normal, mildly affected and severely affected chloroplast ultrastructures of C. multipinnata, respectively; d, e and f show the normal, mildly affected and severely affected chloroplast ultrastructures of C. panzhihuaensis, respectively. CW: cell wall; E; envelope of chloroplast; G: granum; Sl: stroma lamellae