Here's a review on plant cold acclimation. There are recent articles
listed at the bottom.
Thomashow, M.F. 2001. So What's New in the Field of Plant Cold
Acclimation? Lots! Plant Physiology 125: 89-93.
http://www.plantphysiol.org/cgi/content/full/125/1/89
David R. Hershey