Characteristics of the relative maximum in the decay of delayed light emission from Pothos leaf following far-red excitation |
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Authors: | T. S. Desai Robert T. Ross |
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Affiliation: | (1) Department of Biochemistry, Ohio State University, 43210 Columbus, Ohio, USA;(2) Present address: Biology and Agriculture Division, Bhabha Atomic Research Centre, 400 085 Bombay, India |
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Abstract: | Following illumination with wavelengths longer than 700 nm, the intensity of light emission from Pothos aurea leaf falls for 1 min and then increases to a maximum after 2 min in the dark. The spectrum of this minute-range liminescence matches that of prompt fluorescence excited at the same wavelength, but differs from that of prompt or minute-range delayed emission excited by wavelengths shorter than 700 nm. This emission is less sensitive to heat damage than millisecond delayed emission, and may originate from photosystem I. |
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Keywords: | fluorescence luminescence photosystem I Pothos aurea |
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