Abstract
It was pointed out by JUNGE & WITT (1967) that some of the transient absorption changes of chloroplasts indicate a light induced electric field across the photosynthetic membrane. This was concluded from kinetic measurements on chloroplasts with ionophorous antibiotics, which transport ions through the membrane and thus accelerate the decrease of the light induced electric field. The whole spectrum of thes’e field indicating absorption changes was measured by EMRICH, JUNGE & WITT (1969). It shows that not only chlorophyll b, but also the other bulk pigments, which are embedded in the thylakoid membrane, are involved. This is another hint on the electric origin of these absorption changes. A third hint was given by JACKSON & CROFTS (1969) from measurements on chromatophores. They found that the same absorption changes, which are induced by light, can also be induced by ion gradients.
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© 1972 Dr. W. Junk N.V. Publishers, The Hague
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Schmidt, S., Reich, R., Witt, H.T. (1972). Electrochromic Measurements in Vitro as a Test for the Interpretation of Field Indicating Absorption Changes in Photosynthesis. In: Forti, G., Avron, M., Melandri, A. (eds) Photosynthesis, two centuries after its discovery by Joseph Priestley. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2938-4_22
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DOI: https://doi.org/10.1007/978-94-010-2938-4_22
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