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The induction of kin genes in cold-acclimating Arabidopsis thaliana. Evidence of a role for calcium

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Abstract.

The involvement of calcium signaling during cold-induction of the kin genes of Arabidopsis thaliana (L.) Heynh. was examined. Treatments with chemicals which either chelate extracellular calcium (EGTA) or block the plasma-membrane calcium channels (La3+, Gd3+) inhibited cold acclimation as well as kin gene expression. Ruthenium red, an inhibitor of calcium release from intracellular stores partially inhibited kin gene expression and development of freezing tolerance. An inhibitor of calcium-dependent protein kinases (CDPKs) and calmodulin prevented cold acclimation as well as the cold induction of kin genes. Using restriction fragment length polymorphism-coupled domain-directed differential display, five CDPK clones were identified which showed differential regulation by cold. The amplified fragments showed homology to known plant CDPKs. The involvement of calcium and calcium-binding proteins in cold acclimation of A. thaliana is discussed.

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Authors and Affiliations

  1. Department of Plant Production, P.O. Box 27 (Viikki C), FIN-00014 University of Helsinki, Finland, , , , , , FI

    Sari Tähtiharju

  2. Department of Biology, McGill University, 1205 Avenue Docteur Penfield, Montreal, Quebec H3A 1B1, Canada, , , , , , CA

    Veena Sangwan, Antonio F. Monroy & Rajinder S. Dhindsa

  3. Department of Plant Biology/Botany, P.O. Box 27 (Viikki B), FIN-00014 University of Helsinki, Finland, , , , , , FI

    Marianne Borg

Authors
  1. Sari Tähtiharju
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  2. Veena Sangwan
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  3. Antonio F. Monroy
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  4. Rajinder S. Dhindsa
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  5. Marianne Borg
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Received: 28 November 1996 / Accepted: 5 May 1997

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Tähtiharju, S., Sangwan, V., Monroy, A. et al. The induction of kin genes in cold-acclimating Arabidopsis thaliana. Evidence of a role for calcium. Planta 203, 442–447 (1997). https://doi.org/10.1007/s004250050212

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  • DOI: https://doi.org/10.1007/s004250050212

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