ISSN:
1573-5079
Keywords:
chloroplast
;
delayed light emission
;
emission spectrum
;
far red irradiation
;
Photosystem II
;
spinach
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract In spinach chloroplasts illuminated with far red light, the relative intensity maximum during the decay of delayed light is emitted at 680–690 nm. This finding supports previous models predicting emission from Photosystem II, and contradicts earlier attributions to Photosystem I. Due to self absorption, the emission spectrum of the relative maximum is shifted to longer wavelengths and displays apparent Photosystem I characteristics in chloroplast samples of higher concentration or in leaves. This may have caused earlier investigators to ascribe the emission to Photosystem I. A differences between the spectral width of the emission spectra of delayed fluorescence and the relative maximum indicates that these two phenomena represent emission from different sub-populations of Photosystem II centers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00035381
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