Figure 6.

Fluorescence spectroscopy analysis of the changes in the state of the photosynthetic membrane induced by lincomycin. (A) The 77 K fluorescence spectrum of leaf homogenate from untreated (solid line) and treated (dash-dotted line) leaves. A PSI spectrum is shown for comparison (dotted line). (B) The second derivative of untreated (solid line) and treated (dash-dotted line) 77 K fluorescence spectra. (C) Room-temperature spectra of diluted leaf homogenates of the control (solid line) and lincomycin-grown (dashed line) plants. (D) 77 K excitation fluorescence spectra for 680 nm (solid line) and 700 nm (dashed line) bands of leaf homogenates from treated plants.