Molecular, Cell, Development (MCD) Seminar Series - McMaster University
2008-09 || 2009-10 || 2010-11 || 2011-12 || 2012-13

Molecular, Cell, Development (MCD) SEMINAR SERIES
Department of Biology


 
Speaker: Dr. Wayne Snedden

Date: Friday 22nd, March, 2013
Time: 12 noon
Location: HSC 1A5

Title: The odd yet fascinating world of plant calcium sensors

Abstract
All organisms must be able to detect and respond appropriately to a variety of internal and environmental stimuli. Upon stimulation, cells trigger complex signal transduction networks that communicate information to relevant downstream machinery. As is the case with other eukaryotes, plants use calcium ions as ubiquitous second messengers in myriad signaling pathways. Calcium-binding proteins, such as the evolutionarily conserved calmodulin (CaM), serve as calcium sensors to propagate signals to downstream targets that ultimately mediate stimulus-specific responses. Interestingly, plants possess an array of CaM-like proteins (CMLs) not found in other organisms. The Arabidopsis genome, remarkably, encodes 50 CMLs, most of which remain unstudied. Why do plants need so many different calcium sensors? What do they do? This seminar will present biochemical, physiological, and genetic data indicating that the CMLs we have studied to date function both in stress response, and key developmental processes.