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SUMMARY:Pflanzenwissenschaftliches Kolloquium
DTSTART;TZID=Europe/Berlin:20260612T120000
DTEND;TZID=Europe/Berlin:20260612T130000
DTSTAMP:20260915T084601Z
UID:d8d31698c717463fa14b9f28a999bb80@www.biologie.uni-bonn.de
CREATED:20260401T095512Z
DESCRIPTION:Many regulatory mechanisms of photosynthetic light use are sub
 jected to a redox control. Redox regulations take place at different level
 s. Redox changes finetune photosynthetic electron transfer at the photosyn
 thetic reaction centers\, the reduction state of the electron transport ch
 ain has a signalling function and thiol-modifications mediated by the redo
 xin network do not only activate the Calvin-Benson Cycle but also modulate
  alternative electron transport routes. These redox regulations affect the
  generation of reactive oxygen species like singlet oxygen and superoxide.
  \nThe midpoint potential of the primary quinone acceptor QA in PSII chang
 es upon replacement of bicarbonate ligand at the non-heme iron by small ca
 rboxylic acids. According to our data\, photorespiratory metabolites like 
 glycolate shift this midpoint potential towards a more positive value and 
 reduce thereby the amount of singlet oxygen. This observation may be relev
 ant under drought conditions. (...)
LAST-MODIFIED:20260608T085332Z
URL:https://www.biologie.uni-bonn.de/de/veranstaltungen/pflanzenwissenscha
 ftliches-kolloquium-15
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DTSTART:20260329T030000
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