The Cytochrome b 6 f Complex: A Regulatory Hub Controlling Electron Flow and the Dynamics of Photosynthesis?

Giovanni Finazzi, Jun Minagawa, Giles Johnson

    Research output: Chapter in Book/Conference proceedingChapter

    Abstract

    Photosynthetic organisms must respond to several external stimuli to adjust their photosynthetic performances in order to keep a high capacity of carbon assimilation and avoid photodamage. They do so integrating processes occurring at different time scales starting from very fast light harvesting, down to slow changes of electron flow and protein composition of the photosynthetic apparatus. Central to these regulatory mechanisms is the cytochrome b 6 f complex, which regulates intersystem electron flow via photosynthetic control and modulates light harvesting capacity by acting as a redox sensor to trigger an acclimation process named state transitions. In this chapter we describe how the cytochrome b 6 f complex performs to regulate these different functions in both plants and microalgae, proposing new mechanisms of regulation, and critically discussing how these processes are compatible with the existing literature on the structure and function of this complex.
    Original languageEnglish
    Title of host publicationCytochrome Complexes
    Subtitle of host publicationEvolution, Structures, Energy Transduction, and Signaling
    EditorsWilliam A. Cramer, Toivo Kallas
    Place of PublicationDordrecht
    PublisherSpringer Nature
    Pages437-452
    Number of pages16
    ISBN (Electronic)9789401774819
    ISBN (Print)9789401774796
    DOIs
    Publication statusPublished - 2016

    Publication series

    NameAdvances in Photosynthesis and Respiration
    PublisherSpringer
    Volume41

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