If you love patterning like I love patterning, you might be interested in these three recent articles in Development.
Here's a Hypothesis:
"An intracellular partitioning-based framework for tissue cell polarity in plants and animals" http://dev.biologists.org/content/140/10/2061.abstract
"We propose that a fundamental building block for tissue cell polarity is the process of intracellular partitioning,which can establish individual cell polarity in the absence of asymmetric cues."
And another Hypothesis:
"Polar auxin transport: models and mechanisms"
"Here we propose a new mathematical framework for the analysis of polar auxin transport and present a detailed mathematical analysis of published models."
And a Open Access research article on leaf polarity, running title
"ARF3 is a direct target of AS1"
(Currently one of the most-read articles in Development)
Via Mary Williams