Studies from G.R. Strimbeck et al in the area of forestry described.

"To provide baseline data for physiological studies of extreme low-temperature (LT) tolerance in boreal conifers. we profiled LT stress responses, liquid nitrogen (LN2)-quench tolerance, and sugar concentrations in foliage of boreal-temperate species pairs in the genera Abies, Picea and Pinus, growing in an arboretum in a temperate oceanic climate from August 2006 through April 2007. The boreal species acclimated more rapidly and deeply than the temperate species, acquiring LN2-quench tolerance by late November, despite unusually warm conditions throughout the autumn and early Winter," researchers in Trondheim, Norway report.

"Maximum LT tolerance in the temperate …