Fluorescence and Photochemical Investigations of Phytochrome in Higher Plants

Figure 2

Low-temperature (85 K) emission (1, 2, 𝜆_𝑒=630 nm) and excitation (1^′, 2^′, 𝜆_𝑚=720 nm) fluorescence spectra of the red phytochrome form Pr in the cells of coleoptiles of etiolated oat seedlings (1, 1^′) and full-length 124 kDa phytochrome isolated from them (2, 2^′). (From [36]).