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- W2049661330 endingPage "443" @default.
- W2049661330 startingPage "430" @default.
- W2049661330 abstract "Cyanobacteria are oxygenic phototrophic prokaryotes and are considered to be the ancestors of chloroplasts. Their photosynthetic machinery is functionally equivalent in terms of primary photochemistry and photosynthetic electron transport. Fluorescence measurements and other techniques indicate that cyanobacteria, like plants, are capable of redirecting pathways of excitation energy transfer from light harvesting antennae to both photosystems. Cyanobacterial cells can reach two energetically different states, which are defined as “State 1” (obtained after preferential excitation of photosystem I) and “State 2” (preferential excitation of photosystem II). These states can be distinguished by static and time resolved fluorescence techniques. One of the most important conclusions reached so far is that the presence of both photosystems, as well as certain antenna components, are necessary for state transitions to occur. Spectroscopic evidence suggests that changes in the coupling state of the light harvesting antenna complexes (the phycobilisomes) to both photosystems occur during state transitions. The finding that the phycobilisome complexes are highly mobile on the surface of the thylakoid membrane (the mode of interaction with the thylakoid membrane is essentially unknown), has led to the proposal that they are in dynamic equilibrium with both photosystems and regulation of energy transfer is mediated by changes in affinity for either photosystem." @default.
- W2049661330 created "2016-06-24" @default.
- W2049661330 creator A5041615481 @default.
- W2049661330 creator A5049940179 @default.
- W2049661330 creator A5069432796 @default.
- W2049661330 creator A5072068051 @default.
- W2049661330 date "1998-12-01" @default.
- W2049661330 modified "2023-10-18" @default.
- W2049661330 title "Light Harvesting and State Transitions in Cyanobacteria" @default.
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- W2049661330 doi "https://doi.org/10.1111/j.1438-8677.1998.tb00731.x" @default.