...ity,ssince a single measurement of dark fluorescence may provide “information on many aspects of plantsphysiology and environment” [4].sRen and Ai summarize redox probes based on fluorescent proteins =-=[5]-=-. Since the 1990s, fluorescentsprotein-based technologies have been greatly expanded and revolutionized biology. In this paper,sgenetically encoded probes that can be utilized to detect redox biologic...