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Photosynthetic organisms have acquired a dual mechanism to utilize and dissipate light energy via photosynthesis and photoprotection, respectively. In addition, chloroplast plasticity allows the fine-tuning of both processes, which has played a major role in plant adaptation to environmental conditions. In this special issue - organised by editors Michael Hippler, Jun Minagawa and Yuichiro Takahashi - we present five reviews and three research papers describing cutting edge research into the mechanisms establishing and optimising the balance between photosynthesis and photoinhibition, and we further explore how this knowledge can be used to improve photosynthetic efficiency by genetic engineering.
The cover shows the best-energy docking models for efficient electron transfer (ET) between P. tricornutum (a diatom) photosystem I (PSI) and P. tricornutum or M. braunii (a green alga) cytochrome c6 (Cc6). Membrane lipids and PsaA/B subunits of PSI (in light grey), the PsaF subunit of PSI (in dark grey), P700 (in green) and Cc6 of P. tricornutum (in blue) or M. braunii (in light brown) are depicted. PSI W652/W624 groups, located in the ET pathway between P700 and the cytochromes, are also shown. For more information, see Castell et al. 2021.
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