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SUMMARY:Regulatory networks controlling carpel (and petal) development - D
 r. Humberto Herrera-Ubaldo\, Evolution &amp\; Development Group\, Departme
 nt of Plant Sciences
DTSTART:20221020T111500Z
DTEND:20221020T124500Z
UID:TALK183863@talks.cam.ac.uk
CONTACT:Kumari Billakurthi
DESCRIPTION:Flowers are composed of organs whose identity is defined by th
 e combinatorial activity of transcription factors (TFs). The interactions 
 between MADS-box TFs and protein complex formation have been schematized i
 n the floral quartet model of flower development. The flower’s reproduct
 ive part is the gynoecium\, which\, in turn\, is crucial for plant reprodu
 ction and fruit and seed production. After the establishment of carpel ide
 ntity\, many tissues arise to form a mature gynoecium. TFs have been descr
 ibed as regulators of gynoecium development\, and some interactions and co
 mplexes have been identified. However\, broad knowledge about the interact
 ions among these TFs and their participation during development remains sc
 arce. In this seminar\, I will talk about our recent work that used a syst
 ems biology approach to understand the formation of a complex reproductive
  unit - as the gynoecium - by mapping binary interactions between well-cha
 racterised TFs. We analysed over 4\,400 combinations and detected more tha
 n 250 protein-protein interactions (PPIs)\, resulting in a process-specifi
 c interaction map. We observed a close relationship between TFs involved i
 n auxin and cytokinin signalling pathways and other TFs. Furthermore\, we 
 analysed the network by combining PPI data\, expression\, and genetic data
 \, which helped us dissect it into several dynamic spatio-temporal subnetw
 orks related to gynoecium development processes. \nI will also talk about 
 the functional characterization of two interacting proteins SEEDSTICK and 
 NO TRANSMITTING TRACT\, which regulate the expression of genes encoding li
 pid metabolism and cell wall-related enzymes. Finally\, I will describe my
  current research related to the formation of cuticular patterns in the pe
 tals of Hibiscus trionum flowers.
LOCATION:Large Lecture Theatre\, Department of Plant Sciences\,
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