Plant Molecular Biology

, Volume 47, Issue 5, pp 571–579 | Cite as

A catalytic subunit of the sugar beet protein kinase CK2 is induced by salt stress and increases NaCl tolerance in Saccharomyces cerevisiae

  • Rodolphe Kanhonou
  • Ramon Serrano
  • Roc Ros Palau


Salinity is an important limiting factor in plant growth and development. We have cloned a catalytic subunit of the sugar beet protein kinase CK2 (BvCKA2) by functional expression in yeast of a NaCl-induced cDNA library. BvCKA2 was able to increase the yeast tolerance to NaCl and to functionally complement the cka1 cka2 yeast double mutant upon over-expression. Southern blot analysis indicated that, in sugar beet, the BCKA2 gene is a member of a multigene family. The mRNA levels of BvCKA2 were up-regulated in response to NaCl stress which suggests that protein kinase CK2 may be involved in the plant response to salt stress.

Beta vulgaris CK2 catalytic subunit NaCl stress Saccharomyces cerevisiae 


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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Rodolphe Kanhonou
    • 1
  • Ramon Serrano
    • 1
  • Roc Ros Palau
    • 2
  1. 1.Instituto de Biología Molecular y Celular de PlantasUniversidad Politécnica de Valencia-CSICValenciaSpain
  2. 2.Departament de Biologia Vegetal, Facultat de Ciències BiològiquesUniversitat de ValenciaBurjassot (Valencia)Spain

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