Fig. 5: Bright-field and corresponding H2O2 (top row) and SA (bottom row) concentration maps of pak choi infiltrated with reference sensor (green), SA sensor (blue), and H2O2 sensor (red) under 785 nm laser excitation.
From: Decoding early stress signaling waves in living plants using nanosensor multiplexing
Pak choi plants were subjected to (a) mechanical wounding, (b) Xcc infection, (c) high light, and (d) high heat treatment respectively. Snapshots of H2O2 concentration maps are shown at 5-min intervals for the first 45 min post-stress capturing the first ROS wave, followed by 1 h, 1.5, or 2 h, and 4 h time-points capturing the secondary ROS wave. Snapshots of SA concentration maps are shown at 15-min intervals for the first 2 h post-stress, followed by 30-min intervals for the next 2 h.
