The relation of light-induced slow absorbancy and scattering changes about 520 nm and structure of chloroplast thylakoids--a theoretical investigation.
A theoretical analysis is made on the relation between light-induced thylakoid shrinkage, slow light-induced absorbancy changes about 520 nm, and light-induced scattering changes observed at 90 degrees, which occur in isolated chloroplasts. A simple model of the thylakoids stacks (grana) is assumed and by a mathematical formalism a correlation of these effects is shown. The light minus dark difference spectrum is shown to peak around 520 nm, a fact that confirms earlier suggestions that this difference band is due to the combined effects of the selective dispersion and optical-conformational changes in the grana.
Duniec
J T
JT
Department of Applied Mathematics, Institute of Advanced Studies, Research School of Physical Sciences, Australian National University, Canberra, A. C. T. 2600, Australia.
Thorne
S W
SW
D000042:Absorption; D008027:Light; D008954:Models, Biological; D013057:Spectrum Analysis; D013696:Temperature; D020524:Thylakoids / Q000528:radiation effects* / Q000648:ultrastructure*