Photoprotective function of chloroplast avoidance movement: In vivo chlorophyll fluorescence study

2010 ◽  
Vol 167 (9) ◽  
pp. 709-716 ◽  
Author(s):  
Olga Sztatelman ◽  
Andrzej Waloszek ◽  
Agnieszka Katarzyna Banaś ◽  
Halina Gabryś
Keyword(s):  
Chlorophyll Fluorescence ◽  
Fluorescence Study ◽  
In Vivo Chlorophyll Fluorescence

Changes of Excitation Spectra of in vivo Chlorophyll Fluorescence during Induction of Photosynthesis

1993 ◽  
Vol 48 (1-2) ◽  
pp. 46-51 ◽  
Author(s):  
Wieslaw I. Gruszecki ◽  
Zbigniew Krupa
Keyword(s):  
Energy Transfer ◽  
Chlorophyll Fluorescence ◽  
Quantum Yield ◽  
Dark Adaptation ◽  
Fluorescence Quantum Yield ◽  
Excitation Energy Transfer ◽  
Reaction Centers ◽  
Excitation Spectra ◽  
In Vivo Chlorophyll Fluorescence

Excitation spectra of chlorophyll fluorescence from intact rye leaves were registered at different steps of the induction of photosynthesis after dark adaptation. Analysis of these spectra indicates that at least two processes related to spectroscopic features are responsible for a fluorescence quenching. The first one, active during the first 100 s of illumination, was interpreted to consists in an overall decrease of the fluorescence quantum yield of antenna pigments and chlorophylls, in particular close to the reaction centers. The second type of a fluorescence decrease (between 100 s and 300 s of illumination) was found to be in large extent related to decrease of the rate of an excitation energy transfer between accessory xanthophyll pigments and chlorophylls emitting fluorescence. This latter molecular mechanism is discussed as being related to violaxanthin availability to de-epoxidation in the xanthophyll cycle.

scholarly journals Frequently asked questions about in vivo chlorophyll fluorescence: practical issues

2014 ◽  
Vol 122 (2) ◽  
pp. 121-158 ◽  
Author(s):  
Hazem M. Kalaji ◽  
Gert Schansker ◽  
Richard J. Ladle ◽  
Vasilij Goltsev ◽  
Karolina Bosa ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
In Vivo Chlorophyll Fluorescence
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