Summary: Light Induced Guard Cell
Signaling
Sunando Roy
Guard cells and the stomata
The tradeoff between water and carbon dioxide
Roelfsema et. al. New Phytologist (2005) 167: 665 - 691
The Light Signaling Pathway
Boolean models
· We modeled the signaling network using Boolean
rules and both synchronous and asynchronous
update
· Ion mediated turgor = chloride/nitrates and k ions
and malate
· Synchronous model: Stomatal opening in 9 time
steps.
· Asynchronous model: Stomatal opening in 4-6
time steps.
Salient features
· The blue light signaling carried out through
ion channels

Source: Albert, Réka - Departments of Biology & Physics, Pennsylvania State University

Collections: Biology and Medicine