Isolation of a cDNA corresponding to a low temperature-and ABA-responsive gene encoding a putative glycine-rich RNA-binding protein in Solanum commersonii

A cDNA encoding a putative RNA-binding glycine-rich protein, SCRGP-1,was isolated from the wild potato species Solanum commersonii, The amino acid sequence of the deduced protein revealed that the protein contains a consensus RNA-binding domain and has a glycine-rich carboxy-terminal domain. The corresponding gene is induced by low temperature, ABA, wounding, and drought in both Solanum commersonii and Solanum tuberosum, The response of this putative RNA-binding protein gene to low temperature and ABA treatments in Solanum sp, suggests that the SCRGP-1 protein might participate in the adaptation process leading to increased freezing tolerance.