Circadian‐regulated expression of a nuclear‐encoded plastid σ factor gene (sigA) in wheat seedlings
Open Access
- 28 May 1999
- journal article
- Published by Wiley in FEBS Letters
- Vol. 451 (3) , 275-278
- https://doi.org/10.1016/s0014-5793(99)00593-1
Abstract
The activity of a light‐responsive psbD promoter in plastids is known to be regulated by a circadian clock. However, the mechanism of the circadian regulation of the psbD light‐responsive promotor, which is recognized by an Escherichia coli‐type RNA polymerase, is not yet known. We examined the time course of mRNA accumulation of two E. coli‐type RNA polymerase subunit genes, sigA and rpoA, under a continuous light condition after 12 h light/12 h dark entrainment. Accumulation of the sigA mRNA was found to be regulated by a circadian clock, while rpoA mRNA did not show any significant oscillation throughout the experiment.Keywords
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