ISSN:
1573-5079
Keywords:
thylakoid membranes
;
electron transfer
;
photoacoustic spectroscopy
;
energy storage
;
photosynthesis
;
plastoquinone
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The photosynthetic energy storage yield of uncoupled thylakoid membranes was monitored by photoacoustic spectroscopy at various measuring beam intensities. The energy storage rate as evaluated by the half-saturation measuring beam intensity (i50) was inhibited by 3-(3,4-dichlorophenyl)-1,1 dimethylurea, by heat inactivation or by artificial electron acceptors specific for photosystem I or photosystem II; and was activated by electron donors to photosystem I. The reactions involving both photosystems were all characterized by a similar maximal energy storage yield of 16±2 percent. The data could be interpreted if we assumed that the energy storage elicited by the photosystems at 35 Hz is detected at the level of the plastoquinone pool.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00034861
