[Seminars] PSB event reminder

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Calendar Name: seminars
Scheduled for: Thursday, January 28 2010, 11:00 - 12:30
Event text:    Dr Lars Østergaard
	       
	       John Innes Centre
	       Norwich
	       UK
Details:       "Cell fate specification guided by hormonal and genetic
	       interplay during fruit development"
	       
	       ABSTRACT
	       Mobile signals provided by hormones and morphogens are
	       essential to organise multicellular structures. Despite
	       detailed knowledge on the dynamics of specific hormones
	       in specific cellular environments, not much is known
	       about the interactions between hormonal and genetic
	       events that lead to proper organ formation.
	       The Arabidopsis fruit provides an outstanding model
	       system to study organ patterning and cell
	       differentiation with dramatically different cell types
	       located immediately next to each other. Work on
	       Arabidopsis fruit development has been impressively
	       successful in identifying key genetic regulators;
	       however, the data clearly indicate that in order to get
	       an integrated view of fruit patterning, it is necessary
	       to understand the role of hormones in the process.
	       We use Arabidopsis and Brassica fruits as models to
	       study how genetic and hormonal activities interact to
	       form a complex organ. Results will be presented on the
	       importance of both local hormone biosynthesis and
	       distribution, on communication between tissues to
	       coordinate growth and how these processes are
	       controlled. A high-definition map of hormone
	       distribution during fruit development is currently under
	       construction. This map will be used to construct a
	       mathematical model of fruit development, which is likely
	       to provide exciting new insight into how hormones
	       control organ growth and development.

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