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Journal of Experimental Botany, Vol 50, 1867-1868, Copyright © 1999 by Oxford University Press

ARTICLES

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

M Baudo, L Meza-Zepeda, E Palva and P Heino
Department of Plant Biology, Uppsala Genetic Center, Swedish University of Agricultural Sciences, Box 7010, S-75007 Uppsala, Sweden; Department of Tumor Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Montebello, N-0310 Oslo, Norway; Department of Biosciences, Division of Genetics and Institute of Biotechnology, University of Helsinki, Box 56, FIN-00014 Helsinki, Finland; Corresponding author; Fax: +358 9 70859079; E-mail: Pekka.Heino@helsinki.fi

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.Keywords: Abscisic acid, cold acclimation, glycine rich protein, RNA-binding domain, Solanum sp.
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