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SUMMARY:Circadian regulation of sunflower development - Professor Stacey H
 armer\, UC Davies\, USA
DTSTART:20230511T111500Z
DTEND:20230511T124500Z
UID:TALK194719@talks.cam.ac.uk
CONTACT:Kumari Billakurthi
DESCRIPTION:Plants display a remarkable degree of plasticity\, altering th
 eir growth and development in response to an array of environmental cues. 
 We use domesticated sunflower as a model to investigate how this plasticit
 y is modified by the circadian system. Domesticated sunflower is well-know
 n for its heliotropic behavior\, with stems bending to follow the sun from
  east to west during the day and then bending from west to east during the
  night so they face east before the sun rises in the morning. Sunflowers a
 re also famous for the remarkable spiral arrangement of florets on their c
 omposite inflorescences\, a pattern imposed early in development.  It is l
 ess recognized that during late-stage floral development this spiral patte
 rn is transformed into one of concentric rings. We find that both solar tr
 acking of stems and spatial patterns seen in late-stage floral development
  are generated by interactions between the circadian system and environmen
 tal signaling pathways and demonstrate the importance of this coordination
  for plant reproductive fitness.
LOCATION:Online / Plant Sciences LLT for Department members only
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