The relationship between light scattering and chlorophyll a fluorescence during oscillations in photosynthetic carbon assimilation - Sivak, M.N.; Dietz, K.-J.; Heber, U.; Walker, D.A. (Elsevier)
Light scattering, which can be taken as an indicator of the transthylakoid proton gradient, and the 518-nm rise, which can be regarded as a measure of the transthylakoid membrane potential, have been followed during oscillations in chlorophyll a fluorescence, which are known to be associated with corresponding changes in photosynthetic carbon assimilation. Both components oscillated in a manner which was broadly reciprocal to chlorophyll a fluorescence. However, there was a phase shift such that the light-scattering change usually anticipated fluorescence and often also the 518-nm shift. It is concluded that the proton motive force rises and falls slightly in advance of rises and falls in carbon assimilation. The relationship of these changes to a possible underlying mechanism is discussed.
http://dx.doi.org/10.1016/0003-9861(85)90304-2
Keywords: W; V; U