Abstract
Cold acclimation (CA) results in alterations of plasma membrane (PM) and cell wall proteins in plants,
which is considered to be crucial for increasing their freezing tolerance. Fasciclin-like arabinogalactan
proteins (FLAs) are abundant glycoproteins in the PM and cell wall and have potential roles in abiotic stress
responses via transducing signaling and modulating cell wall functions. In present study, we investigated
temporal expression of 21 FLA genes during CA in Arabidopsis thaliana. We found that there are a variety of
changing patterns among FLAs in response to CA. Principal component analysis clearly showed that
expression of FLAs and its responses to CA varied considerably between shoot and root. FLAs2, 8 and 13,
the most abundant FLA genes, exhibited increases of their expression in the early stage of CA, but its extent
was greatly different between shoot and root. Taken together, we will discuss about the potential role of
FLAs in response to low temperature in plants.
