Journal Article

<i>CIP353</i> Encodes an AP2/ERF-Domain Protein in Potato (<i>Solanum tuberosum</i> L.) and Responds Slowly to Cold Stress

Toshiki Mine, Toru Hiyoshi, Keisuke Kasaoka and Akio Ohyama

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 44, issue 1, pages 10-15
Published in print January 2003 | ISSN: 0032-0781
Published online January 2003 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcg004
CIP353 Encodes an AP2/ERF-Domain Protein in Potato (Solanum tuberosum L.) and Responds Slowly to Cold Stress

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We isolated the CIP353 cDNA, which encodes a novel cold-inducible protein, from cold-stored tubers of potato (Solanum tuberosum L.). The level of CIP353 transcripts began to increase in tubers 2 weeks after storage at 3°C and continued increasing for at least 3 months during storage. This increase was not observed in tubers stored at ≥9°C. The increased level of transcripts in tubers stored at 3 or 6°C decreased when the tubers were shifted to 20°C. These data suggest that CIP353 is a temperature-dependent and slowly responsive cold-inducible gene of potato. The middle of the deduced amino acid sequence of CIP353 cDNA showed high similarity to the AP2/ERF domain, which occurs in some plant regulatory factors. The deduced protein contained a putative basic nuclear-localization signal and potential acidic activation domains. These data suggest that CIP353 protein is a transcription factor of genes expressed in tubers under long-term storage at low temperatures.

Keywords: Keywords: AP2/ERF-domain — Cold stress — Gene expression — Solanum tuberosum L.

Journal Article.  3570 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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