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  • I. Tuominen
  • M. Pollari
  • E. Aquirre von Wobeser
  • E. Tyystjärvi
  • B.W. Ibelings
  • H.C.P. Matthijs
  • T. Tyystjärvi
The role of the primary-like sigma factor SigC was studied in Synechocystis. Under high temperature stress (48 °C) the ΔsigC inactivation strain showed a lower survival rate than the control strain. The ΔsigC strain grew poorly at 43 °C in liquid cultures under normal air. However, change to 3% CO2 enhanced growth of ΔsigC at 43 °C. Differences in expression of many genes related to the carbon concentrating mechanisms between the control and the ΔsigC strain were recorded with a genome-wide DNA microarray. We suggest that low solubility of CO2 at high temperature is one of the factors contributing to the poor thermotolerance of the ΔsigC strain.
Original languageEnglish
Pages (from-to)346-350
JournalFEBS Letters
Issue number2
StatePublished - 2008

ID: 265355