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SUMMARY:Circadian regulation of chloroplasts - Antony Dodd (University of 
 Bristol)
DTSTART:20140130T130000Z
DTEND:20140130T140000Z
UID:TALK47378@talks.cam.ac.uk
CONTACT:Ian Henderson
DESCRIPTION:Circadian timekeeping improves plant performance. Understandin
 g the cellular basis for the circadian optimization of plant function is i
 mportant\, because this could unlock additional agricultural productivity.
  There are circadian rhythms of photosynthesis and correct circadian regul
 ation increases plant productivity\, but it is not known how the circadian
  oscillator regulates the photosynthetic apparatus or the chloroplast geno
 me. I will show that in Arabidopsis\, a subset of chloroplast-encoded phot
 osynthesis genes is controlled by a nuclear-encoded signalling protein. Ou
 r findings reveal one pathway by which the nuclear-encoded circadian oscil
 lator controls rhythms of chloroplast gene expression. I will show that li
 ght and circadian signals are integrated to adjust chloroplast transcripti
 on. I will conclude that (i) during evolution\, prokaryotic transcriptiona
 l regulators in chloroplasts were recruited by the eukaryotic circadian sy
 stem in higher plants\, and (ii) circadian timing information is communica
 ted between organelles with distinct genetic systems.
LOCATION:Department of Plant Sciences\, Large Lecture Theatre
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