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SUMMARY:Control of orientated cell division and cell expansion during plan
 t development - Simon Turner\, Manchester
DTSTART:20111027T150000Z
DTEND:20111027T160000Z
UID:TALK31543@talks.cam.ac.uk
CONTACT:Jill Harrison
DESCRIPTION:One of the defining features of plant development is the way i
 n which morphology is determined by differential growth. Two essential asp
 ects controlling differential growth are the orientation of cell division 
 and the direction of p cell expansion. We have been taking different appro
 aches to examine both these aspects of plant development. We have been usi
 ng plant vascular tissue as a means of understanding what regulates the or
 ientation of plant cell divisions. In the vascular meristem cell divisions
  occur down the long axis of the cell and must be highly orientated to gen
 erate the highly aligned files of cells generated during vascular developm
 ent. Identification of the pxy mutants have allowed us to identify a recep
 tor kinase and its corresponding peptide ligand\, a member of the CLE gene
  family\, which are essential in regulating this process. We are currently
  analysing the PXY/Cle signalling network that appears to regulate the ori
 entation and rate of cell division as well as the differentiation of xylem
  cells.  In to understand the control of cell expansion we have been looki
 ng at the organization of cortical microtubule array that are essential in
  organizing cell wall. In order to undergo directions cell expansion the m
 icrotubule array must change from an essentially net-like array to an alig
 ned array in which all microtubules are essentially parallel. In particula
 r we have been examining the role of the microtubule severing protein kata
 nin in this process and demonstrate that essential of the proper regulatio
 n severing in determining aligned MT arrays.
LOCATION:Department of Plant Sciences\, Large Lecture Theatre
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